✓ PASS
litellm 1.105.5
truncation.structured-output · openai-responses
Requirements
| Id | Level | Status | Evidence |
|---|---|---|---|
| no-partial-success | MUST | SATISFIED | structured.attempted=true; structured.returned_as_success=false |
| cause-is-truncation | MUST | SATISFIED | finish.value="length" (primary: incomplete_details.reason); truth.finish="length"; error.category=null; structured.returned_as_success=false |
| text-reported | SHOULD | SATISFIED | text.value="{\"islands\":[{\"name\":\"Κρήτη\",\"sea\":\"Κρητικό Πέ" (primary); truth.text="{\"islands\":[{\"name\":\"Κρήτη\",\"sea\":\"Κρητικό Πέ" |
| usage-reported | SHOULD | SATISFIED | usage.input=68 (primary); truth.usage.input=68; usage.output=24 (primary); truth.usage.output=24 |
What the provider sent
- Finish
- length
- Raw finish
- max_output_tokens
- Text
- {"islands":[{"name":"Κρήτη","sea":"Κρητικό Πέ
- Tool calls
[]
- Usage
{ "alternatives": {}, "cached_input": 0, "input": 68, "output": 24, "raw": { "input_tokens": 68, "input_tokens_details": { "cache_write_tokens": 0, "cached_tokens": 0 }, "output_tokens": 24, "output_tokens_details": { "reasoning_tokens": 0 }, "total_tokens": 92 }, "reasoning": 0, "total": 92 }- Stream completed
null
- Error
null
Wire excerpt
status: 200
content-type: application/json
body (json):
{
"id": "resp_04ca3cce672b80e9006acbfbfeef9c87d1b371f55d49b29248",
"object": "response",
"created_at": 1791753214,
"status": "incomplete",
"access_programs": null,
"background": false,
"billing": {
"payer": "developer"
},
"completed_at": null,
"error": null,
"frequency_penalty": 0.0,
"incomplete_details": {
"reason": "max_output_tokens"
},
"instructions": null,
"max_output_tokens": 24,
"max_tool_calls": null,
"model": "gpt-6-luna",
"moderation": null,
"output": [
{
"id": "msg_04ca3cce672b80e9006acbfbffd3a087d1882b5ea5d91c9c0b",
"type": "message",
"status": "incomplete",
"content": [
{
"type": "output_text",
"annotations": [],
"logprobs": [],
"text": "{\"islands\":[{\"name\":\"Κρήτη\",\"sea\":\"Κρητικό Πέ"
}
],
"phase": "final_answer",
"role": "assistant"
}
],
"parallel_tool_calls": true,
"presence_penalty": 0.0,
"previous_response_id": null,
"prompt_cache_key": null,
"prompt_cache_retention": "24h",
"reasoning": {
"context": "all_turns",
"effort": "none",
"mode": "standard",
"summary": null
},
"safety_identifier": null,
"service_tier": "default",
"store": true,
"temperature": 1.0,
"text": {
"format": {
"type": "json_schema",
"description": null,
"name": "output",
"schema": {
"type": "object",
"properties": {
"islands": {
"type": "array",
"items": {
"type": "object",
"properties": {
"name": {
"type": "string"
},
"sea": {
"type": "string"
}
},
"required": [
"name",
"sea"
],
"additionalProperties": false
}
}
},
"required": [
"islands"
],
"additionalProperties": false
},
"strict": true
},
"verbosity": "medium"
},
"tool_choice": "auto",
"tool_usage": {
"image_gen": {
"input_tokens": 0,
"input_tokens_details": {
"image_tokens": 0,
"text_tokens": 0
},
"output_tokens": 0,
"output_tokens_details": {
"image_tokens": 0,
"text_tokens": 0
},
"total_tokens": 0
},
"web_search": {
"num_requests": 0
}
},
"tools": [],
"top_logprobs": 0,
"top_p": 0.98,
"truncation": "disabled",
"usage": {
"input_tokens": 68,
"input_tokens_details": {
"cache_write_tokens": 0,
"cached_tokens": 0
},
"output_tokens": 24,
"output_tokens_details": {
"reasoning_tokens": 0
},
"total_tokens": 92
},
"user": null,
"metadata": {}
}What the library reported
- Outcome
- returned
- Finish
{ "raw": "max_output_tokens", "source": "incomplete_details.reason", "surface": "primary", "value": "length" }- Text
- Value
- {"islands":[{"name":"Κρήτη","sea":"Κρητικό Πέ
- Surface
- primary
- Tool calls
[]
- Usage
{ "cached_input": 0, "input": 68, "output": 24, "reasoning": 0, "surface": { "cached_input": "primary", "input": "primary", "output": "primary", "reasoning": "primary", "total": "primary" }, "total": 92 }- Stream
{ "chunks_seen": null, "completed": null, "used": false }- Error
null
- Unsupported reason
null
Full observation JSON
{
"elapsed_ms": 48.09701442718506,
"error": null,
"finish": {
"raw": "max_output_tokens",
"source": "incomplete_details.reason",
"surface": "primary",
"value": "length"
},
"format": "wiretruth.observation/v1",
"library": {
"api": "litellm.responses",
"language": "python",
"name": "litellm",
"version": "1.105.5"
},
"notes": [],
"outcome": "returned",
"stream": {
"chunks_seen": null,
"completed": null,
"used": false
},
"structured": {
"attempted": true,
"returned_as_success": false,
"value": null
},
"text": {
"surface": "primary",
"value": "{\"islands\":[{\"name\":\"Κρήτη\",\"sea\":\"Κρητικό Πέ"
},
"tool_calls": [],
"unsupported_reason": null,
"usage": {
"cached_input": 0,
"input": 68,
"output": 24,
"reasoning": 0,
"surface": {
"cached_input": "primary",
"input": "primary",
"output": "primary",
"reasoning": "primary",
"total": "primary"
},
"total": 92
}
}Fixture
recorded openai-responses/truncation.structured-output
| Provenance | Value |
|---|---|
| Recorded at | 2026-10-11T21:13:34Z |
| Requested model | gpt-6-luna |
| Returned model | gpt-6-luna |
| CI run | https://github.com/kartsan03/wiretruth/actions/runs/38175457862 |
Reproduce
wiretruth serve openai-responses/truncation.structured-outputPlain-library snippet from the shim manifest.
litellm.responses(model='openai/' + model, api_base=WIRETRUTH_BASE_URL_OPENAI_RESPONSES, api_key=WIRETRUTH_API_KEY)Upstream
No matching upstream report.
History
| Version | Grade |
|---|---|
| 1.105.5 | ✓ PASS |
| 1.105.1 | ✓ PASS |