models

Anthropic: Claude Sonnet 4.6

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Anthropic: Claude Sonnet 4.6

Claude Sonnet 4.6 helps with development, understanding long documents, planning and tasks involving visual data. Supports adaptive reasoning and multi-step tool use.

About the model

This description covers the model’s capabilities. Available in Ailoot inputs, outputs and options are listed for the selected method below.

Code, documents and an action plan

Claude Sonnet 4.6 combines coding, understanding of large context, agentic planning, professional information work and design. Anthropic highlights studying code before making changes and the ability to work through multiple task steps in sequence. This is useful for finding a problem in a large project, analyzing a long document and preparing report content.

The model can analyze information from contracts, research papers and other material in one request. A task may include extracting facts, reasoning from them and forming a result that brings several parts together. Described uses also include financial analysis and creation of interface code with attention to composition and presentation.

Actions in a visual environment

Sonnet 4.6 understands text and images; its own output is text. Anthropic describes computer-use scenarios where the model navigates from a screenshot, chooses mouse and keyboard actions, analyzes a complex table or works through a sequence of web-form steps. Actual execution requires application tools that provide the screen and perform the actions.

The manufacturer's standard visual input formats are JPEG/PNG/GIF/WebP, using the first frame of an animation. For native analysis, the longer dimension is 1568 pixels, with 1568 visual tokens; larger images are downscaled before analysis. File and parameter support depends on the application's method.

Similarly, documents, spreadsheets and presentations can be analyzed or have their content prepared, but producing a finished file requires a suitable environment. Images help the model understand charts, diagrams and the visual structure of material; this does not turn it into an image generator.

How analysis is controlled

This version supports adaptive reasoning and manual extended thinking. Manual mode is marked as deprecated; adaptive mode lets the model choose when additional analysis is useful, including between tool calls. The effort levels are low, medium, high and max, with high as the default. According to Anthropic, effort selection helps match the level of work and latency to the nature of the task.

The current specification provides 1 million tokens of context and up to 128 thousand response tokens in ordinary mode. For sustained work, the manufacturer also describes experimental compaction of old context into a summary. This feature requires application support and does not remove the model's context-window limits.

Points to consider when working

The reliable built-in knowledge cutoff is August 2025. Later information requires task material or available search. Connected tools can help find information, execute code and process discovered content; their availability and permitted actions are determined by the application.

Sonnet 4.6 was trained to resist hidden malicious instructions in external material, but complex visual environments and ambiguous tasks can still lead to errors. Explicit task requirements, verification of extracted facts and assessment of action results remain part of reliable work with the model.

Ailoot Ultra · OpenAI Chat POST /v1/chat/completions claude-sonnet-4-6-thinking

claude-sonnet-4-6-thinking

Anthropic /claude-sonnet-4-6-thinking

Overview

Claude Sonnet 4.6 helps with development, understanding long documents, planning and tasks involving visual data. Supports adaptive reasoning and multi-step tool use.

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
FieldTypeRequirementValues & limitsDefault
FieldmodelTypestringRequirementRequiredValues & limits
claude-sonnet-4-6-thinking
Default—
FieldmessagesTypemessage[]RequirementRequiredValues & limits
Minimum items: 1
Default—
Fieldmessages[].roleTypestringRequirementRequiredValues & limits
Model-specific
Default—
Fieldmessages[].contentTypestringRequirementOptionalValues & limits
Applies when: Text conversation
Default—
FieldstreamTypebooleanRequirementOptionalValues & limitsDefaultfalse
Input material combinations

Text · UTF8 text

messages[].content

Method parameters and lifecycle
ParameterContract
Parametercontent_typeContractapplication/json
ParameterrequiredContractmodel, messages
Parametermaterial_typesContracttext
ParametermessagesContractmessage array with role/content shape
Parameterfile_materialContractactual UTF-8 document inserted as literal text; no file ID inferred
Parameteroptional_controlsContractstream
Parametercontrol_scopeContractText conversation; stream is a boolean and defaults to false.
Parameteroutput_modalitiesContracttext
Parameterhosted_operationsContractfalse
Parametermultimodal_input_bindingContractnull

Method aliases: /chat/completions

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
Not specified When fast mode is selected
Flex mode
Not specified When flex mode is selected
Maximum reasoning effort
Not specified When maximum reasoning effort uses the default adjustment

Ailoot rates

Prices by configuration

ConfigurationRate scheduleCharge
ConfigurationBase token ratesRate scheduleBase rateCharge
Input · Input tokens $0.006 / 1K tokens
Output · Output tokens $0.03 / 1K tokens
Input · Cache read $0.0006 / 1K tokens
Input · Cache write $0.0075 / 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 →

Example requests

Ailoot Ultra · OpenAI Chat

curlPython SDK
set -eu
: "${AILOOT_API_KEY:?Set your Ailoot API key}"
python3 - <<'PY_REQUEST'
import json,os
from pathlib import Path
p=json.loads('{"model":"claude-sonnet-4-6-thinking","messages":[{"role":"user","content":"hello"}],"stream":false}')

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
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="claude-sonnet-4-6-thinking", messages=[{"role":"user","content":"hello"}], stream=False)
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"))

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
FieldType
Fieldchoices[].indexTypeinteger
Fieldchoices[].message.contentTypestring|null
Fieldchoices[].message.tool_callsTypetool_call[]
Fieldchoices[].message.reasoning_contentTypestring
Fieldchoices[].message.reasoning_detailsTypeobject|array
Fieldchoices[].finish_reasonTypestring|null
FieldusageTypeobject
Errors and next steps
ResponseConditionNext step
Response400 · invalid_request_errorConditionInvalid required fields, material representation or parameter valueNext stepCorrect the indicated fields before a new creation request.

Aliases

Model aliases

Ailoot Ultra claude-sonnet-4-6-thinking

Method path aliases

/chat/completions

Related caller IDs

claude-sonnet-4-6-thinking

FAQ · Anthropic: Claude Sonnet 4.6
What inputs and results are available?

POST /v1/chat/completions · claude-sonnet-4-6-thinking: text → text

Which fields does the request use?

POST /v1/chat/completions · claude-sonnet-4-6-thinking: model, messages, stream

What limits apply?

POST /v1/chat/completions · claude-sonnet-4-6-thinking: messages.min_items: 1

More details

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.

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Subscription discounts for regular use. Promo codes offer up to 50% off token purchases.

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Add text, image, video and audio generation to paid features in your service.
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