Source: https://ailoot.ai/models/en/qwen-qwen2-vl-72b-instruct/
Canonical: https://ailoot.ai/models/en/qwen-qwen2-vl-72b-instruct/
Language: en

# Qwen2 VL 72B Instruct

[Markdown](https://ailoot.ai/models/en/qwen-qwen2-vl-72b-instruct/index.md) · [JSON](https://ailoot.ai/models/en/qwen-qwen2-vl-72b-instruct/facts.json)

## [Qwen2 VL 72B Instruct](https://ailoot.ai/models/en/qwen-qwen2-vl-72b-instruct/)

Qwen2-VL-72B-Instruct combines text, images and video for visual questions, document reading and multilingual text in images. Its maker describes video understanding beyond 20 minutes, dynamic image resolution and visual-agent integrations; the answer is text.

- [**Ailoot Ultra · OpenAI Chat** `POST /v1/chat/completions` `Qwen/Qwen2-VL-72B-Instruct`](https://ailoot.ai/models/en/qwen-qwen2-vl-72b-instruct/#method-0)
- [**Ailoot Ultra · Anthropic Messages** `POST /v1/messages` `Qwen/Qwen2-VL-72B-Instruct`](https://ailoot.ai/models/en/qwen-qwen2-vl-72b-instruct/#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.

Qwen2-VL-72B-Instruct is the instruction-tuned 72B visual-language edition built around Qwen2. It receives text together with images or video and generates a text answer. The maker highlights understanding images with different resolutions and aspect ratios, interpreting text inside images, reasoning about visible relationships and answering questions about videos longer than 20 minutes.

Image and video capabilities

For a document page, ask for the particular content you need: a paragraph, a table row, a formula or the conditions attached to a statement. Keep the page readable and name whether the result should transcribe the wording, summarize it or explain its meaning. A useful document output can retain the original section label beside the extracted content. For a diagram, ask how the labeled elements connect and identify the relationship that needs explanation.

The documented video use includes questions, dialogue and written content based on the visible sequence. Define the event or change to inspect: when an object appears, what happens before a particular step, or how a demonstrated action relates to a written procedure. Request an ordered event description or a comparison between the visible steps and the supplied procedure. The maker's 20-minute-plus statement describes long-video understanding; it is not a fixed maximum video duration or a guarantee that every raw clip fits an unchanged input configuration.

Visual-agent use

The release also positions Qwen2-VL for visual agents connected to mobile devices, robots and other tools. Its announcement describes function calling and code-interpreter scenarios, such as producing code from a diagram or using a visual question to request an external lookup. The surrounding application supplies those tools, executes the proposed action and returns the result. The model's text response alone does not click a control, move a device or execute the generated program.

A practical interface task can supply a screenshot and the user's goal, then ask for the visible control relevant to the next step and the evidence supporting that choice. Keep observation, proposed action and actual execution as separate parts of the workflow. This uses the visual-agent focus while making the requested result specific enough for the application to act on.

Multilingual text inside images

The maker describes recognition of text inside images across English and Chinese, most European languages, and languages including Japanese, Korean, Arabic and Vietnamese. A multilingual page can therefore be approached as a visual reading task. Request the original transcription first when exact wording matters, then a translation or explanation in the chosen language. Preserve labels and numbers rather than mixing recognition with an unspecified rewrite.

Dynamic resolution and positional information

Qwen2-VL combines a vision encoder with the Qwen2 language model. Naive Dynamic Resolution maps different image sizes into different numbers of visual tokens. Multimodal Rotary Position Embedding separates positional information so the model can represent text order, two-dimensional images and the temporal and spatial structure of video. These features explain how the same family handles a page, several images or a video sequence.

The model card's image processor documents a default range of 4 to 16,384 visual tokens per image. The application can adjust minimum and maximum pixels while preserving aspect ratio, or request dimensions that are rounded to a multiple of 28. The example range of 256 to 1,280 tokens is a configurable illustration, not a separate universal image limit. More image detail uses more computation and visual tokens, so retain the labels, headings and small objects needed by the question when preparing the image.

Input preparation and context

The maker demonstrates a single image, multiple images, video supplied as a frame sequence or local file, and batched conversations. Image preparation includes local files, encoded image data and image references. The card's video example uses a selected frame rate; that example does not establish one required sampling rate for every video. Identify the order and role of multiple images, and provide the information needed to interpret a sequence rather than treating unrelated frames as one scene.

The released configuration sets maximum positions to 32,768. Visual material and textual instructions must be planned within the actual configured context. The card's 128-token generation example is only an example setting; it does not publish a separate maximum output capacity. The 72B edition should retain its own configuration rather than inheriting the long-context settings of Qwen2.5-VL or a different Qwen model.

Substantive limitations

The maker explicitly states that Qwen2-VL does not understand audio contained in videos. Spoken information must therefore be provided separately if the question depends on it. The image-training dataset is described as updated through June 2023; this is a statement about that dataset rather than a promise of current visual knowledge.

The documented limitations also include incomplete recognition of particular people or named intellectual properties, difficulty with intricate multi-step instructions, weak counting in complex scenes and limitations in three-dimensional spatial reasoning. When the task depends on one of these abilities, focus the question on the required objects or relationship and preserve the visual evidence beside the answer. Clear source material and a defined output make the result easier to inspect without replacing those stated limitations with an accuracy guarantee.

Practical task

### Read a supplied document transcription

Technical example in English

```
Read a supplied document transcription

Use this text transcription of page P2, section Limits: 'Store below 25 C. Once opened, use within seven days. Do not freeze.' Return the original wording first, then a plain-English explanation separating the temperature, time and freezing conditions. Preserve P2 as the source label. No image or video is attached.
```

#### Expected result

```
A labelled transcription followed by three source-grounded explanations of the conditions.
```

#### Check the result

```
Below 25 C is not rewritten as at or below 25 C, and the seven-day period starts at opening.
```

**Ailoot Ultra · OpenAI Chat** `POST /v1/chat/completions` `Qwen/Qwen2-VL-72B-Instruct`

[`Qwen/Qwen2-VL-72B-Instruct`](https://ailoot.ai/models/en/#m=Qwen%2FQwen2-VL-72B-Instruct&route=Ultra&caller=Qwen%2FQwen2-VL-72B-Instruct&fmt=chat)

Alibaba /`Qwen/Qwen2-VL-72B-Instruct`

### Overview

Qwen2-VL-72B-Instruct combines text, images and video for visual questions, document reading and multilingual text in images. Its maker describes video understanding beyond 20 minutes, dynamic image resolution and visual-agent integrations; the answer is text.

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 Qwen/Qwen2-VL-72B-Instruct | 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

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

| Configuration | Rate schedule | Charge |
| --- | --- | --- |
| ConfigurationBase token rates | Rate scheduleBase rate | Charge Input · Input tokens **$0.00118** / 1K tokens Output · Output tokens **$0.00118** / 1K tokens Input · Cache read **$0** / 1K tokens Input · Cache write **$0** / 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": "Qwen/Qwen2-VL-72B-Instruct", "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='Qwen/Qwen2-VL-72B-Instruct',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='Qwen/Qwen2-VL-72B-Instruct',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** [`Qwen/Qwen2-VL-72B-Instruct`](https://ailoot.ai/models/en/#m=Qwen%2FQwen2-VL-72B-Instruct&route=Ultra&caller=Qwen%2FQwen2-VL-72B-Instruct&fmt=chat)

#### Method path aliases

Use the method paths shown above.

#### Related caller IDs

[`Qwen/Qwen2-VL-72B-Instruct`](https://ailoot.ai/models/en/#m=Qwen%2FQwen2-VL-72B-Instruct&route=Ultra&caller=Qwen%2FQwen2-VL-72B-Instruct&fmt=chat)

**Ailoot Ultra · Anthropic Messages** `POST /v1/messages` `Qwen/Qwen2-VL-72B-Instruct`

[`Qwen/Qwen2-VL-72B-Instruct`](https://ailoot.ai/models/en/#m=Qwen%2FQwen2-VL-72B-Instruct&route=Ultra&caller=Qwen%2FQwen2-VL-72B-Instruct&fmt=messages)

Alibaba /`Qwen/Qwen2-VL-72B-Instruct`

### Overview

Qwen2-VL-72B-Instruct combines text, images and video for visual questions, document reading and multilingual text in images. Its maker describes video understanding beyond 20 minutes, dynamic image resolution and visual-agent integrations; the answer is text.

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 Qwen/Qwen2-VL-72B-Instruct | 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

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

| Configuration | Rate schedule | Charge |
| --- | --- | --- |
| ConfigurationBase token rates | Rate scheduleBase rate | Charge Input · Input tokens **$0.00118** / 1K tokens Output · Output tokens **$0.00118** / 1K tokens Input · Cache read **$0** / 1K tokens Input · Cache write **$0** / 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": "Qwen/Qwen2-VL-72B-Instruct",
  "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': 'Qwen/Qwen2-VL-72B-Instruct', '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': 'Qwen/Qwen2-VL-72B-Instruct', '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** [`Qwen/Qwen2-VL-72B-Instruct`](https://ailoot.ai/models/en/#m=Qwen%2FQwen2-VL-72B-Instruct&route=Ultra&caller=Qwen%2FQwen2-VL-72B-Instruct&fmt=messages)

#### Method path aliases

Use the method paths shown above.

#### Related caller IDs

[`Qwen/Qwen2-VL-72B-Instruct`](https://ailoot.ai/models/en/#m=Qwen%2FQwen2-VL-72B-Instruct&route=Ultra&caller=Qwen%2FQwen2-VL-72B-Instruct&fmt=messages)

FAQ · Qwen/Qwen2-VL-72B-Instruct

What inputs and results are available?

`POST /v1/chat/completions` · `Qwen/Qwen2-VL-72B-Instruct`: `text` → `text` `POST /v1/messages` · `Qwen/Qwen2-VL-72B-Instruct`: `text` → `json`, `sse`

Which fields does the request use?

`POST /v1/chat/completions` · `Qwen/Qwen2-VL-72B-Instruct`: `model`, `messages`, `stream`, `modalities`, `provider` `POST /v1/messages` · `Qwen/Qwen2-VL-72B-Instruct`: `model`, `messages`, `max_tokens`, `stream`

What limits apply?

`POST /v1/chat/completions` · `Qwen/Qwen2-VL-72B-Instruct`: `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.