Source: https://ailoot.ai/models/en/meta-muse-spark-1-3-contributor/ Canonical: https://ailoot.ai/models/en/meta-muse-spark-1-3-contributor/ Language: en # Meta: Muse Spark 1.3 Contributor [Markdown](https://ailoot.ai/models/en/meta-muse-spark-1-3-contributor/index.md) · [JSON](https://ailoot.ai/models/en/meta-muse-spark-1-3-contributor/facts.json) ## [Meta: Muse Spark 1.3 Contributor](https://ailoot.ai/models/en/meta-muse-spark-1-3-contributor/) Muse Spark 1.3 Contributor is a reasoning edition in Meta's agentic and coding family for prototype workflows. Its maker lists text, image, video and PDF inputs, text output and a 1,048,576-token context, with reasoning levels through xhigh rather than Standard 1.3's max. - [**Ailoot Ultra · OpenAI Chat** `POST /v1/chat/completions` `meta/muse-spark-1.3-contributor`](https://ailoot.ai/models/en/meta-muse-spark-1-3-contributor/#method-0) - [**Ailoot Ultra · Anthropic Messages** `POST /v1/messages` `meta/muse-spark-1.3-contributor`](https://ailoot.ai/models/en/meta-muse-spark-1-3-contributor/#method-1) About the model This description covers the model’s capabilities. Available in Ailoot inputs, outputs and options are listed for the selected method below. Muse Spark 1.3 Contributor is a separately named edition in Meta's Muse Spark family for prototyping and experimentation. The family is designed for agentic and coding work: multi-step tool loops, software assistants and reasoning over substantial source material. Keep the Contributor name when selecting the edition rather than treating it as the Standard 1.3 entry with every setting transferred unchanged. Inputs and context The official model table lists text, images, video and PDFs as inputs and text as output, with a context window of 1,048,576 tokens. A task can combine a written requirement, a screenshot, a relevant clip or document pages and request a written explanation, structured findings or proposed code. The model's text result can become an artifact in the surrounding application; rendering a page or executing code requires that application environment. Identify each source and its role before asking for a result. A prototype interface task can pair a screenshot with the desired behavior and the existing code fragment. Ask for the visible differences, the proposed implementation change and the assumptions that still need clarification. A document task can define the fields to extract and request the supporting page or passage beside each finding. The maker notes that audio understanding in the 1.3 version is not fully supported and may give degraded responses. Treat that as a version-specific limitation rather than copying the audio capabilities of Muse Spark 1.2 or a separately named transcription model into this description. Reasoning levels and answer budget Muse Spark generates internal reasoning before its visible answer. The documented effort levels applicable here are minimal, low, medium, high and xhigh. The max level belongs specifically to Standard Muse Spark 1.3 and is not available for Contributor models. Disabling reasoning with none is not supported; omitting the setting still leaves the model reasoning at a model-determined level. The output-token budget covers both internal reasoning and visible text. A request for a long written result therefore needs space for both, especially at a higher reasoning effort. The raw internal reasoning stays private, and log probabilities are not supported as a confidence measure. Request the explanation, fields or final code needed by the task rather than assuming the underlying reasoning trace will be returned as readable text. For a focused extraction or formatting experiment, define the exact record and source material. For a multi-step coding or visual problem, define the intermediate decisions and the final artifact. Higher reasoning effort changes the reasoning allocation; it does not by itself define what constitutes a completed, useful result. Tools and structured findings The maker's Muse Spark documentation describes developer-defined tool calling and structured output. The application supplies the tool definitions, the model decides which operation is needed and prepares its arguments, and the application executes each call and returns the corresponding result. The next answer can use those results to decide what to do next. A proposed call is distinct from a completed operation. The same documentation distinguishes connected built-in search tools from developer-defined functions. Search or code execution is part of the tool environment, not an additional content modality of the text answer. In a prototype, supply only the operations relevant to the question and describe what each returns so the subsequent answer remains connected to actual retrieved or computed information. For structured extraction, specify the field names, required information and representation for missing values. A practical record can contain the source identifier, observed fact, interpretation and question still needing clarification. Keep the record separate from optional prose when an application must process the fields reliably. The maker's schema interface rejects recursive schemas and limits nesting to ten levels. Its strict mode requires a plain-object root, every listed property required and extra properties disallowed. A matched structure does not establish factual correctness. A useful prototype task Choose one workflow that can produce an inspectable artifact. Supply the requirement, a visual example and the code determining the current behavior. Request a short comparison, a proposed revised fragment and examples that distinguish the expected behavior from the current one. Include any lookup or execution result returned by the application before asking for the final explanation. For a document-oriented prototype, give the PDF and the question to answer, then ask for a source-linked summary or comparison table. For video, identify the event or visual relationship to inspect and request an ordered description with the observations supporting it. Define the length and sections of the final answer so the model's large context serves the actual question. Edition and continuity boundaries Contributor remains its own named 1.3 edition, with the documented context and input types. Meta's reasoning guide distinguishes ordinary conversation history from preservation of private reasoning across turns: the maker's chat interface does not return that private trace to external callers. Keep the visible messages, sources and tool outcomes needed for a follow-up rather than assuming every interface carries internal reasoning forward. The sources read do not specify a separate hard maximum input or output-token capacity beyond the context window. Preserve the edition, input preparation and requested artifact, and keep tool execution and final text delivery connected to the results actually obtained in the prototype workflow. Practical task ### Prototype and test a text-only helper Technical example in English ``` Prototype and test a text-only helper Design a small Python prototype for an appointment reminder. Input records contain id and minutes_until_start. Return IDs where 0 <= minutes_until_start <= 30, preserving input order. Supply the function and cases at -1, 0, 30 and 31 minutes. Include a short note on assumptions; no calendar connection or reminder sending is available. ``` #### Expected result ``` A self-contained function, boundary-case assertions and explicit assumptions about input fields. ``` #### Check the result ``` Exactly the 0- and 30-minute records qualify, and the function does not send messages or assume calendar access. ``` **Ailoot Ultra · OpenAI Chat** `POST /v1/chat/completions` `meta/muse-spark-1.3-contributor` [`meta/muse-spark-1.3-contributor`](https://ailoot.ai/models/en/#m=meta%2Fmuse-spark-1.3-contributor&route=Ultra&caller=meta%2Fmuse-spark-1.3-contributor&fmt=chat) Meta /`meta/muse-spark-1.3-contributor` ### Overview Muse Spark 1.3 Contributor is a reasoning edition in Meta's agentic and coding family for prototype workflows. Its maker lists text, image, video and PDF inputs, text output and a 1,048,576-token context, with reasoning levels through xhigh rather than Standard 1.3's max. Accepted inputs Text Results Text ### Available in Ailoot · inputs & methods **Ailoot Ultra · OpenAI Chat** `POST /v1/chat/completions` Input types `text` Output types `text` Output format json or SSE | Field | Type | Requirement | Values & limits | Default | | --- | --- | --- | --- | --- | | Field`model` | Type`string` | RequirementRequired | Values & limits meta/muse-spark-1.3-contributor | Default— | | Field`messages` | Type`message[]` | RequirementRequired | Values & limits Minimum items: 1 | Default— | | Field`messages[].role` | Type`string` | RequirementRequired | Values & limits Examples: system, user, assistant, tool, function Conditions: These roles are explicitly represented by Source compatibility types; the exact model role set remains model-specific. Model-specific | Default— | | Field`messages[].content` | Type`string\|content_part[]\|null` | RequirementOptional | Values & limits | Default— | | Field`messages[].tool_calls` | Type`tool_call[]` | RequirementOptional | Values & limits | Default— | | Field`messages[].tool_call_id` | Type`string` | RequirementOptional | Values & limits Applies when: role=tool; use actual returned ID | Default— | | Field`messages[].name` | Type`string` | RequirementOptional | Values & limits | Default— | | Field`messages[].reasoning_content` | Type`string` | RequirementOptional | Values & limits Applies when: Round-trip actual returned reasoning where this model uses it | Default— | | Field`messages[].reasoning_details` | Type`object\|array` | RequirementOptional | Values & limits Model-specific | Default— | | Field`max_tokens` | Type`integer` | RequirementOptional | Values & limits Minimum: 1 Model-specific | Default— | | Field`max_completion_tokens` | Type`integer` | RequirementOptional | Values & limits Minimum: 1 Model-specific | Default— | | Field`stream` | Type`boolean` | RequirementOptional | Values & limits | Defaultfalse | | Field`stream_options.include_usage` | Type`boolean` | RequirementOptional | Values & limits Model-specific | Default— | | Field`temperature` | Type`number` | RequirementOptional | Values & limits Model-specific | Default— | | Field`top_p` | Type`number` | RequirementOptional | Values & limits Model-specific | Default— | | Field`stop` | Type`string\|string[]` | RequirementOptional | Values & limits Model-specific | Default— | | Field`tools` | Type`function_tool[]` | RequirementOptional | Values & limits Model-specific | Default— | | Field`tools[].type` | Type`string` | RequirementOptional | Values & limits function Model-specific | Default— | | Field`tools[].function.name` | Type`string` | RequirementRequired | Values & limits Applies when: function tool supplied | Default— | | Field`tools[].function.description` | Type`string` | RequirementOptional | Values & limits | Default— | | Field`tools[].function.parameters` | Type`JSON_schema` | RequirementOptional | Values & limits | Default— | | Field`tool_choice` | Type`string\|object` | RequirementOptional | Values & limits Model-specific | Default— | | Field`parallel_tool_calls` | Type`boolean` | RequirementOptional | Values & limits Model-specific | Default— | | Field`response_format` | Type`object` | RequirementOptional | Values & limits Model-specific | Default— | | Field`reasoning_effort` | Type`string` | RequirementOptional | Values & limits Model-specific | Default— | | Field`reasoning` | Type`object` | RequirementOptional | Values & limits Model-specific | Default— | | Field`service_tier` | Type`string` | RequirementOptional | Values & limits Model-specific | Default— | | Field`instructions` | Type`string` | RequirementOptional | Values & limits Compatibility field | Default— | | Field`functions` | Type`function[]` | RequirementOptional | Values & limits Model-specific | Default— | | Field`function_call` | Type`string\|object` | RequirementOptional | Values & limits Model-specific | Default— | | Field`prompt_cache_options` | Type`object` | RequirementOptional | Values & limits Model-specific | Default— | | Field`modalities` | Type`string[]` | RequirementOptional | Values & limits text | Default— | | Field`provider` | Type`object` | RequirementOptional | Values & limits Conditions: provider.options is rejected on this Ultra text route | Default— | | Field`cache_control.ttl` | Type`string` | RequirementOptional | Values & limits Conditions: 1h is rejected in actual prompt-cache locations | Default— | Input material combinations **Text** · UTF8 text `messages[].content` Method parameters and lifecycle | Parameter | Contract | | --- | --- | | Parameter`content_type` | Contractapplication/json | | Parameter`required` | Contractmodel, messages | | Parameter`material_types` | Contracttext | | Parameter`messages` | Contractmessage array with role/content shape | | Parameter`file_material` | Contractactual UTF-8 document inserted as literal text; no file ID inferred | | Parameter`optional_controls` | Contractstream, temperature, top\_p, stop, max\_tokens, max\_completion\_tokens, reasoning, response\_format, tools, tool\_choice | | Parameter`control_scope` | Contractmodel-specific; user function tools differ from hosted tools | | Parameter`output_modalities` | Contracttext | | Parameter`hosted_operations` | Contractfalse | | Parameter`multimodal_input_binding` | Contractnull | Lifecycle: `synchronous_or_streamed` Send exact model ID with messages. Context length is not an output cap. A text file may supply literal text; image/audio/file-object inputs need exact binding. ### Pricing Tariff references do not add request options. Supported parameters are listed for the selected method. Fast mode Standard rate When fast mode is selected Flex mode Standard rate When flex mode is selected Maximum reasoning effort Standard rate When maximum reasoning effort uses the default adjustment Reasoning effort · high Standard rate When reasoning effort is high Reasoning effort · low Standard rate When reasoning effort is low Reasoning effort · max Standard rate When reasoning effort is max Reasoning effort · medium Standard rate When reasoning effort is medium Reasoning effort · minimal Standard rate When reasoning effort is minimal Reasoning effort · xhigh Standard rate When reasoning effort is xhigh #### Ailoot rates #### Prices by configuration Match each charge to the conditions shown. Use one rate for each set of alternative configurations. | Configuration | Rate schedule | Context tokens, more than | Context tokens, up to and including | Charge | | --- | --- | --- | --- | --- | | ConfigurationBase token rates | Rate scheduleBase rate | Context tokens, more than— | Context tokens, up to and includingNo upper bound | Charge Input · Input tokens **$0.0002** / 1K tokens Output · Output tokens **$0.0004** / 1K tokens Input · Cache read **$0.000004** / 1K tokens Input · Cache write **—** / 1K tokens Input · Cache write, 1 hour **—** / 1K tokens | | ConfigurationRequest-length tier 1 | Rate schedule— | Context tokens, more than0 | Context tokens, up to and includingNo upper bound | Charge Input · Input tokens **$0.0002** / 1K tokens Output · Output tokens **$0.0004** / 1K tokens Input · Cache read **$0.000004** / 1K tokens Input · Cache write **—** / 1K tokens Input · Cache write, 1 hour **—** / 1K tokens | Ailoot reserves an estimated amount before a request. After the result, it settles the final charge from measured usage. Streaming settlement uses the final usage record. [How reservation and settlement work →](https://ailoot.ai/docs/en/billing/reserve/) ### Example requests #### Ailoot Ultra · OpenAI Chat curlPython SDKPython stream ```bash set -eu : "${AILOOT_API_KEY:?Set your Ailoot API key}" python3 - <<'PY_REQUEST' import json,os from pathlib import Path p=json.loads('{"model": "meta/muse-spark-1.3-contributor", "messages": [{"role": "user", "content": "Explain the difference between an observation and a hypothesis in three sentences."}]}') Path("request.json").write_text(json.dumps(p,ensure_ascii=False)) PY_REQUEST curl --fail-with-body --silent --show-error https://api.ailoot.ai/v1/chat/completions \ -H "Authorization: Bearer $AILOOT_API_KEY" -H 'Content-Type: application/json' \ --data-binary @request.json -D response-headers.txt -o result.json python3 - <<'PY_RESULT' import json from pathlib import Path r=json.loads(Path("result.json").read_text()) for x in r.get("choices",[]): if x.get("message",{}).get("content"): print(x["message"]["content"]) PY_RESULT ``` ```python from openai import OpenAI import os if not os.environ.get("AILOOT_API_KEY", "").strip(): raise SystemExit("Set AILOOT_API_KEY before making a request") client=OpenAI(base_url="https://api.ailoot.ai/v1",api_key=os.environ["AILOOT_API_KEY"],max_retries=0) result=client.chat.completions.create(model='meta/muse-spark-1.3-contributor',messages=[{"role":"user","content":"Explain observations and hypotheses in three sentences."}]) import base64, json from pathlib import Path def save_result(data, stem="result"): # Keep every field, including usage, IDs, reasoning and tool requests. Path(stem + ".json").write_text(json.dumps(data, ensure_ascii=False, indent=2), encoding="utf-8") print(json.dumps(data, ensure_ascii=False, indent=2)) def save_blob(encoded, suffix, label): raw = base64.b64decode(encoded, altchars=b"-_", validate=True) ext = "png" if raw.startswith(b"\x89PNG\r\n\x1a\n") else "jpg" if raw.startswith(b"\xff\xd8") else "webp" if raw[:4] == b"RIFF" and raw[8:12] == b"WEBP" else suffix file = Path(stem + "-" + label + "." + ext) file.write_bytes(raw) print("Saved", file) for index, block in enumerate(data.get("content") or []): print("Content", index, json.dumps(block, ensure_ascii=False)) for choice in data.get("choices") or []: print("Choice", choice.get("index"), json.dumps(choice.get("message", choice.get("delta", {})), ensure_ascii=False)) for index, item in enumerate(data.get("output") or []): print("Output", index, json.dumps(item, ensure_ascii=False)) if item.get("type") == "image_generation_call" and item.get("result"): save_blob(item["result"], item.get("output_format") or "bin", "output-" + str(index)) for ci, candidate in enumerate(data.get("candidates") or []): for pi, part in enumerate((candidate.get("content") or {}).get("parts") or []): print("Candidate/part", ci, pi, json.dumps(part, ensure_ascii=False)) blob = part.get("inlineData") or part.get("inline_data") if blob and blob.get("data"): mime = blob.get("mimeType") or blob.get("mime_type") suffix = {"image/png":"png", "image/jpeg":"jpg", "image/webp":"webp", "audio/wav":"wav", "audio/mpeg":"mp3", "video/mp4":"mp4"}.get(mime, "bin") save_blob(blob["data"], suffix, "candidate-" + str(ci) + "-part-" + str(pi)) save_result(result.to_dict(mode="json")) ``` ```python from openai import OpenAI import os from pathlib import Path if not os.environ.get("AILOOT_API_KEY", "").strip(): raise SystemExit("Set AILOOT_API_KEY before making a request") client=OpenAI(base_url="https://api.ailoot.ai/v1",api_key=os.environ["AILOOT_API_KEY"],max_retries=0) import base64, json from pathlib import Path def save_result(data, stem="result"): # Keep every field, including usage, IDs, reasoning and tool requests. Path(stem + ".json").write_text(json.dumps(data, ensure_ascii=False, indent=2), encoding="utf-8") print(json.dumps(data, ensure_ascii=False, indent=2)) def save_blob(encoded, suffix, label): raw = base64.b64decode(encoded, altchars=b"-_", validate=True) ext = "png" if raw.startswith(b"\x89PNG\r\n\x1a\n") else "jpg" if raw.startswith(b"\xff\xd8") else "webp" if raw[:4] == b"RIFF" and raw[8:12] == b"WEBP" else suffix file = Path(stem + "-" + label + "." + ext) file.write_bytes(raw) print("Saved", file) for index, block in enumerate(data.get("content") or []): print("Content", index, json.dumps(block, ensure_ascii=False)) for choice in data.get("choices") or []: print("Choice", choice.get("index"), json.dumps(choice.get("message", choice.get("delta", {})), ensure_ascii=False)) for index, item in enumerate(data.get("output") or []): print("Output", index, json.dumps(item, ensure_ascii=False)) if item.get("type") == "image_generation_call" and item.get("result"): save_blob(item["result"], item.get("output_format") or "bin", "output-" + str(index)) for ci, candidate in enumerate(data.get("candidates") or []): for pi, part in enumerate((candidate.get("content") or {}).get("parts") or []): print("Candidate/part", ci, pi, json.dumps(part, ensure_ascii=False)) blob = part.get("inlineData") or part.get("inline_data") if blob and blob.get("data"): mime = blob.get("mimeType") or blob.get("mime_type") suffix = {"image/png":"png", "image/jpeg":"jpg", "image/webp":"webp", "audio/wav":"wav", "audio/mpeg":"mp3", "video/mp4":"mp4"}.get(mime, "bin") save_blob(blob["data"], suffix, "candidate-" + str(ci) + "-part-" + str(pi)) with client.chat.completions.stream(model='meta/muse-spark-1.3-contributor',messages=[{"role":"user","content":"Explain observations and hypotheses in three sentences."}]) as stream: with Path("stream-events.jsonl").open("w",encoding="utf-8") as log: for event in stream: payload=event.to_dict(mode="json") log.write(json.dumps(payload,ensure_ascii=False)+"\n"); log.flush() print(json.dumps(payload,ensure_ascii=False)) final=stream.get_final_completion() save_result(final.to_dict(mode="json"),"stream-result") ``` ### Receive and save results #### Ailoot Ultra · OpenAI Chat json or SSE ##### Keep all completed results Keep every complete returned response, file and content part. Keep every choice and its content/tool calls/reasoning. In SSE assemble deltas by choice/tool index, retain the final finish reason and usage. ##### If the original response needs checking Keep request/response IDs and headers. No generic text job retrieval URL is supplied. Response fields | Field | Type | | --- | --- | | Field`choices[].index` | Typeinteger | | Field`choices[].message.content` | Typestring\|null | | Field`choices[].message.tool_calls` | Typetool\_call\[\] | | Field`choices[].message.reasoning_content` | Typestring | | Field`choices[].message.reasoning_details` | Typeobject\|array | | Field`choices[].finish_reason` | Typestring\|null | | Field`usage` | Typeobject | Errors and next steps | Response | Condition | Next step | | --- | --- | --- | | Response400 · `invalid_request_error` | ConditionInvalid required fields, material representation or parameter value | Next stepCorrect the indicated fields before a new creation request. | ### Aliases #### Model aliases **Ailoot Ultra** [`meta/muse-spark-1.3-contributor`](https://ailoot.ai/models/en/#m=meta%2Fmuse-spark-1.3-contributor&route=Ultra&caller=meta%2Fmuse-spark-1.3-contributor&fmt=chat) #### Method path aliases Use the method paths shown above. #### Related caller IDs [`meta/muse-spark-1.3-contributor`](https://ailoot.ai/models/en/#m=meta%2Fmuse-spark-1.3-contributor&route=Ultra&caller=meta%2Fmuse-spark-1.3-contributor&fmt=chat) **Ailoot Ultra · Anthropic Messages** `POST /v1/messages` `meta/muse-spark-1.3-contributor` [`meta/muse-spark-1.3-contributor`](https://ailoot.ai/models/en/#m=meta%2Fmuse-spark-1.3-contributor&route=Ultra&caller=meta%2Fmuse-spark-1.3-contributor&fmt=messages) Meta /`meta/muse-spark-1.3-contributor` ### Overview Muse Spark 1.3 Contributor is a reasoning edition in Meta's agentic and coding family for prototype workflows. Its maker lists text, image, video and PDF inputs, text output and a 1,048,576-token context, with reasoning levels through xhigh rather than Standard 1.3's max. Accepted inputs Text Results json · sse ### Available in Ailoot · inputs & methods **Ailoot Ultra · Anthropic Messages** `POST /v1/messages` Input types `text` Output types `json`, `sse` Output format JSON or SSE | Field | Type | Requirement | Values & limits | Default | | --- | --- | --- | --- | --- | | Field`model` | Type`string` | RequirementRequired | Values & limits meta/muse-spark-1.3-contributor | Default— | | Field`messages` | Type`message[]` | RequirementRequired | Values & limits | Default— | | Field`messages[].role` | Type`string` | RequirementRequired | Values & limits user, assistant | Default— | | Field`messages[].content` | Type`string` | RequirementRequired | Values & limits | Default— | | Field`max_tokens` | Type`integer` | RequirementRequired | Values & limits | Default— | | Field`stream` | Type`boolean` | RequirementOptional | Values & limits | Defaultfalse | Input material combinations **Text** · UTF-8 text `messages[].content string` Method parameters and lifecycle | Parameter | Contract | | --- | --- | | Parameter`content_type` | Contractapplication/json | | Parameter`required` | Contractmodel, messages, max\_tokens | | Parameter`optional_controls` | Contractstream | | Parameter`material_types` | Contracttext | | Parameter`text_file_material` | ContractRead the actual UTF-8 document and put its text in the indicated input or message content string. | Lifecycle: `synchronous_or_streamed` ### Pricing Tariff references do not add request options. Supported parameters are listed for the selected method. Fast mode Standard rate When fast mode is selected Flex mode Standard rate When flex mode is selected Maximum reasoning effort Standard rate When maximum reasoning effort uses the default adjustment Reasoning effort · high Standard rate When reasoning effort is high Reasoning effort · low Standard rate When reasoning effort is low Reasoning effort · max Standard rate When reasoning effort is max Reasoning effort · medium Standard rate When reasoning effort is medium Reasoning effort · minimal Standard rate When reasoning effort is minimal Reasoning effort · xhigh Standard rate When reasoning effort is xhigh #### Ailoot rates #### Prices by configuration Match each charge to the conditions shown. Use one rate for each set of alternative configurations. | Configuration | Rate schedule | Context tokens, more than | Context tokens, up to and including | Charge | | --- | --- | --- | --- | --- | | ConfigurationBase token rates | Rate scheduleBase rate | Context tokens, more than— | Context tokens, up to and includingNo upper bound | Charge Input · Input tokens **$0.0002** / 1K tokens Output · Output tokens **$0.0004** / 1K tokens Input · Cache read **$0.000004** / 1K tokens Input · Cache write **—** / 1K tokens Input · Cache write, 1 hour **—** / 1K tokens | | ConfigurationRequest-length tier 1 | Rate schedule— | Context tokens, more than0 | Context tokens, up to and includingNo upper bound | Charge Input · Input tokens **$0.0002** / 1K tokens Output · Output tokens **$0.0004** / 1K tokens Input · Cache read **$0.000004** / 1K tokens Input · Cache write **—** / 1K tokens Input · Cache write, 1 hour **—** / 1K tokens | Ailoot reserves an estimated amount before a request. After the result, it settles the final charge from measured usage. Streaming settlement uses the final usage record. [How reservation and settlement work →](https://ailoot.ai/docs/en/billing/reserve/) ### Example requests #### Ailoot Ultra · Anthropic Messages Complete minimal JSON bodycurl · use your UTF-8 documentPython · save the complete result ```json { "model": "meta/muse-spark-1.3-contributor", "max_tokens": 128, "messages": [ { "role": "user", "content": "Summarize the incident report." } ], "stream": false } ``` ```bash set -eu : "${AILOOT_API_KEY:?Set your Ailoot API key}" : "${AILOOT_TEXT_FILE:?Set your actual UTF-8 document}" export AILOOT_TEXT_FILE python3 - <<'PY_REQUEST' import json, os from pathlib import Path source_file = Path(os.environ['AILOOT_TEXT_FILE']) if not source_file.is_file(): raise SystemExit('Set AILOOT_TEXT_FILE to your actual UTF-8 document') text = source_file.read_text(encoding='utf-8') if not text.strip(): raise SystemExit('Choose a document containing text') payload = {'model': 'meta/muse-spark-1.3-contributor', 'max_tokens': 128, 'messages': [{'role': 'user', 'content': 'Summarize the incident report.'}]} payload['messages'][0]['content'] = 'Summarize this material and quote supporting source passages.\n\n' + text Path('request.json').write_text(json.dumps(payload, ensure_ascii=False), encoding='utf-8') PY_REQUEST curl --fail-with-body --silent --show-error https://api.ailoot.ai/v1/messages \ -H "x-api-key: $AILOOT_API_KEY" -H 'anthropic-version: 2023-06-01' -H 'Content-Type: application/json' \ --data-binary @request.json -D response-headers.txt -o result.json python3 - <<'PY_RESULT' import json from pathlib import Path result = json.loads(Path('result.json').read_text(encoding='utf-8')) print(json.dumps(result, ensure_ascii=False, indent=2)) PY_RESULT ``` ```python import json, os from pathlib import Path source_file = Path(os.environ['AILOOT_TEXT_FILE']) if not source_file.is_file(): raise SystemExit('Set AILOOT_TEXT_FILE to your actual UTF-8 document') text = source_file.read_text(encoding='utf-8') if not text.strip(): raise SystemExit('Choose a document containing text') payload = {'model': 'meta/muse-spark-1.3-contributor', 'max_tokens': 128, 'messages': [{'role': 'user', 'content': 'Summarize the incident report.'}]} payload['messages'][0]['content'] = 'Summarize this material and quote supporting source passages.\n\n' + text from urllib.request import Request, urlopen from urllib.error import HTTPError api_key = os.environ['AILOOT_API_KEY'] if not api_key.strip(): raise SystemExit('Set AILOOT_API_KEY before making a request') headers = {'x-api-key': 'PLACEHOLDER_KEY', 'anthropic-version': '2023-06-01', 'Content-Type': 'application/json'} headers['x-api-key'] = api_key request = Request('https://api.ailoot.ai/v1/messages', data=json.dumps(payload, ensure_ascii=False).encode('utf-8'), headers=headers, method='POST') try: with urlopen(request, timeout=120) as response: raw = response.read() Path('response-headers.txt').write_text(str(response.headers), encoding='utf-8') except HTTPError as error: Path('result.json').write_bytes(error.read()) Path('response-headers.txt').write_text(str(error.headers), encoding='utf-8') raise Path('result.json').write_bytes(raw) import json from pathlib import Path result = json.loads(Path('result.json').read_text(encoding='utf-8')) print(json.dumps(result, ensure_ascii=False, indent=2)) ``` ### Receive and save results #### Ailoot Ultra · Anthropic Messages JSON or SSE ##### Keep all completed results Keep every complete returned response, file and content part. Keep all content blocks, thinking signatures and actual tool-use IDs. Assemble all SSE block deltas; a first text block is not the complete output. ##### If the original response needs checking Keep request/response IDs and headers. No generic text job retrieval URL is supplied. Response fields | Field | Type | | --- | --- | | Field`id` | Typestring | | Field`model` | Typestring | | Field`content[]` | Typetext\|thinking\|tool\_use\|other content block | | Field`stop_reason` | Typestring\|null | | Field`usage` | Typeobject | Errors and next steps | Response | Condition | Next step | | --- | --- | --- | | Response400 · `invalid_request_error` | ConditionInvalid required fields, material representation or parameter value | Next stepCorrect the indicated fields before a new creation request. | ### Aliases #### Model aliases **Ailoot Ultra** [`meta/muse-spark-1.3-contributor`](https://ailoot.ai/models/en/#m=meta%2Fmuse-spark-1.3-contributor&route=Ultra&caller=meta%2Fmuse-spark-1.3-contributor&fmt=messages) #### Method path aliases Use the method paths shown above. #### Related caller IDs [`meta/muse-spark-1.3-contributor`](https://ailoot.ai/models/en/#m=meta%2Fmuse-spark-1.3-contributor&route=Ultra&caller=meta%2Fmuse-spark-1.3-contributor&fmt=messages) FAQ · Meta: Muse Spark 1.3 Contributor What inputs and results are available? `POST /v1/chat/completions` · `meta/muse-spark-1.3-contributor`: `text` → `text` `POST /v1/messages` · `meta/muse-spark-1.3-contributor`: `text` → `json`, `sse` Which fields does the request use? `POST /v1/chat/completions` · `meta/muse-spark-1.3-contributor`: `model`, `messages`, `stream`, `modalities`, `provider` `POST /v1/messages` · `meta/muse-spark-1.3-contributor`: `model`, `messages`, `max_tokens`, `stream` What limits apply? `POST /v1/chat/completions` · `meta/muse-spark-1.3-contributor`: `messages.min_items`: `1` Connect Ailoot to Claude Code, OpenCode, Hermes or your own app. ## The company and its project portfolio The company and its project portfolio: millions of customers; monthly sales in the billions. ## Buy tokens at a discount. Subscription discounts for regular use. Promo codes offer up to 50% off token purchases. Subscription Choose a discounted plan for your regular requests. Promo code: up to 50% off Enter your code at checkout. The price updates to reflect the current promotion. Spending in your history The model, tokens and amount are recorded for each request. [Choose a subscription](https://ailoot.ai/docs/en/billing/subscriptions/) · [View model prices](https://ailoot.ai/models/en/) ## Connect the API to a product you sell. Use Ailoot in SaaS, apps and bots under its official service offer and licence agreement. Request a reseller licence for resale. Commercial application Add text, image, video and audio generation to paid features in your service. Reseller licence Send a description of your project and how you provide access. Request written terms for use and resale. Documents on the website The service offer, licence agreement and data processing policy are available before you connect. [Request a reseller licence](mailto:support@ailoot.ai) · [Service offer and licence agreement](https://ailoot.ai/legal/offer?lang=en) ## Ailoot · The company and its project portfolio Ailoot combines established operating experience, a large client base, stable service and ongoing KPI control. The company and its project portfolio: millions of customers; monthly sales in the billions. Ailoot brings that operating experience to API access for AI features in customer products, agents, applications and automations.