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tanstack-ai 1.4.0

usage.stream-final-chunk · openai-chat

Back to results · Scenario

Requirements

IdLevelStatusEvidence
usage-reportedMUSTSATISFIEDusage.input=18 (primary); truth.usage.input=18; usage.output=18 (primary); truth.usage.output=18

What the provider sent

Finish
stop
Raw finish
stop
Text
The sky looks blue because air molecules scatter blue sunlight more than other colors.
Tool calls
[]
Usage
{
  "alternatives": {},
  "cached_input": 0,
  "input": 18,
  "output": 18,
  "raw": {
    "completion_tokens": 18,
    "completion_tokens_details": {
      "accepted_prediction_tokens": 0,
      "audio_tokens": 0,
      "reasoning_tokens": 0,
      "rejected_prediction_tokens": 0
    },
    "prompt_tokens": 18,
    "prompt_tokens_details": {
      "audio_tokens": 0,
      "cache_write_tokens": 0,
      "cached_tokens": 0
    },
    "total_tokens": 36
  },
  "reasoning": 0,
  "total": 36
}
Stream completed
true
Error
null
Wire excerpt
status: 200
content-type: text/event-stream; charset=utf-8
body (sse):
data: {"id":"chatcmpl-EXmWh1DJ4f6S3LZ5ZgcBDE8dHwehg","object":"chat.completion.chunk","created":1791720067,"model":"gpt-6-luna","service_tier":"default","system_fingerprint":null,"choices":[{"index":0,"delta":{"role":"assistant","content":"","refusal":null},"finish_reason":null}],"usage":null,"obfuscation":""}


data: {"id":"chatcmpl-EXmWh1DJ4f6S3LZ5ZgcBDE8dHwehg","object":"chat.completion.chunk","created":1791720067,"model":"gpt-6-luna","service_tier":"default","system_fingerprint":null,"choices":[{"index":0,"delta":{"content":"The"},"finish_reason":null}],"usage":null,"obfuscation":"MqxQzix54zjUt5m"}


data: {"id":"chatcmpl-EXmWh1DJ4f6S3LZ5ZgcBDE8dHwehg","object":"chat.completion.chunk","created":1791720067,"model":"gpt-6-luna","service_tier":"default","system_fingerprint":null,"choices":[{"index":0,"delta":{"content":" sky"},"finish_reason":null}],"usage":null,"obfuscation":"5UNXsxo8TRpOWJ"}


data: {"id":"chatcmpl-EXmWh1DJ4f6S3LZ5ZgcBDE8dHwehg","object":"chat.completion.chunk","created":1791720067,"model":"gpt-6-luna","service_tier":"default","system_fingerprint":null,"choices":[{"index":0,"delta":{"content":" looks"},"finish_reason":null}],"usage":null,"obfuscation":"UVow26sNxakb"}


data: {"id":"chatcmpl-EXmWh1DJ4f6S3LZ5ZgcBDE8dHwehg","object":"chat.completion.chunk","created":1791720067,"model":"gpt-6-luna","service_tier":"default","system_fingerprint":null,"choices":[{"index":0,"delta":{"content":" blue"},"finish_reason":null}],"usage":null,"obfuscation":"0IBjSoODjlpY8"}


data: {"id":"chatcmpl-EXmWh1DJ4f6S3LZ5ZgcBDE8dHwehg","object":"chat.completion.chunk","created":1791720067,"model":"gpt-6-luna","service_tier":"default","system_fingerprint":null,"choices":[{"index":0,"delta":{"content":" because"},"finish_reason":null}],"usage":null,"obfuscation":"e9GoRVLkHj"}


data: {"id":"chatcmpl-EXmWh1DJ4f6S3LZ5ZgcBDE8dHwehg","object":"chat.completion.chunk","created":1791720067,"model":"gpt-6-luna","service_tier":"default","system_fingerprint":null,"choices":[{"index":0,"delta":{"content":" air"},"finish_reason":null}],"usage":null,"obfuscation":"BwRjtQSv22WPRb"}


data: {"id":"chatcmpl-EXmWh1DJ4f6S3LZ5ZgcBDE8dHwehg","object":"chat.completion.chunk","created":1791720067,"model":"gpt-6-luna","service_tier":"default","system_fingerprint":null,"choices":[{"index":0,"delta":{"content":" molecules"},"finish_reason":null}],"usage":null,"obfuscation":"DmdlHx2N"}


data: {"id":"chatcmpl-EXmWh1DJ4f6S3LZ5ZgcBDE8dHwehg","object":"chat.completion.chunk","created":1791720067,"model":"gpt-6-luna","service_tier":"default","system_fingerprint":null,"choices":[{"index":0,"delta":{"content":" scatter"},"finish_reason":null}],"usage":null,"obfuscation":"AKTei2Cro4"}


data: {"id":"chatcmpl-EXmWh1DJ4f6S3LZ5ZgcBDE8dHwehg","object":"chat.completion.chunk","created":1791720067,"model":"gpt-6-luna","service_tier":"default","system_fingerprint":null,"choices":[{"index":0,"delta":{"content":" blue"},"finish_reason":null}],"usage":null,"obfuscation":"hHyv8p1fBAorh"}


data: {"id":"chatcmpl-EXmWh1DJ4f6S3LZ5ZgcBDE8dHwehg","object":"chat.completion.chunk","created":1791720067,"model":"gpt-6-luna","service_tier":"default","system_fingerprint":null,"choices":[{"index":0,"delta":{"content":" sunlight"},"finish_reason":null}],"usage":null,"obfuscation":"gsukIJgjS"}


data: {"id":"chatcmpl-EXmWh1DJ4f6S3LZ5ZgcBDE8dHwehg","object":"chat.completion.chunk","created":1791720067,"model":"gpt-6-luna","service_tier":"default","system_fingerprint":null,"choices":[{"index":0,"delta":{"content":" more"},"finish_reason":null}],"usage":null,"obfuscation":"x2ytye8tIphaq"}


data: {"id":"chatcmpl-EXmWh1DJ4f6S3LZ5ZgcBDE8dHwehg","object":"chat.completion.chunk","created":1791720067,"model":"gpt-6-luna","service_tier":"default","system_fingerprint":null,"choices":[{"index":0,"delta":{"content":" than"},"finish_reason":null}],"usage":null,"obfuscation":"MerePfTrWaegi"}


data: {"id":"chatcmpl-EXmWh1DJ4f6S3LZ5ZgcBDE8dHwehg","object":"chat.completion.chunk","created":1791720067,"model":"gpt-6-luna","service_tier":"default","system_fingerprint":null,"choices":[{"index":0,"delta":{"content":" other"},"finish_reason":null}],"usage":null,"obfuscation":"YPE8YFYgmedS"}


data: {"id":"chatcmpl-EXmWh1DJ4f6S3LZ5ZgcBDE8dHwehg","object":"chat.completion.chunk","created":1791720067,"model":"gpt-6-luna","service_tier":"default","system_fingerprint":null,"choices":[{"index":0,"delta":{"content":" colors"},"finish_reason":null}],"usage":null,"obfuscation":"aQ8EbDIjGmz"}


data: {"id":"chatcmpl-EXmWh1DJ4f6S3LZ5ZgcBDE8dHwehg","object":"chat.completion.chunk","created":1791720067,"model":"gpt-6-luna","service_tier":"default","system_fingerprint":null,"choices":[{"index":0,"delta":{"content":"."},"finish_reason":null}],"usage":null,"obfuscation":"9"}


data: {"id":"chatcmpl-EXmWh1DJ4f6S3LZ5ZgcBDE8dHwehg","object":"chat.completion.chunk","created":1791720067,"model":"gpt-6-luna","service_tier":"default","system_fingerprint":null,"choices":[{"index":0,"delta":{},"finish_reason":"stop"}],"usage":null,"obfuscation":"Ww7ZGNdBh2hO"}


data: {"id":"chatcmpl-EXmWh1DJ4f6S3LZ5ZgcBDE8dHwehg","object":"chat.completion.chunk","created":1791720067,"model":"gpt-6-luna","service_tier":"default","system_fingerprint":null,"choices":[],"usage":{"prompt_tokens":18,"completion_tokens":18,"total_tokens":36,"prompt_tokens_details":{"cached_tokens":0,"cache_write_tokens":0,"audio_tokens":0},"completion_tokens_details":{"reasoning_tokens":0,"audio_tokens":0,"accepted_prediction_tokens":0,"rejected_prediction_tokens":0}},"obfuscation":"FZuLTa9ISM"}


data: [DONE]

What the library reported

Outcome
returned
Finish
{
  "raw": null,
  "source": "RUN_FINISHED.metadata.tanstack.finishReason",
  "surface": "primary",
  "value": "stop"
}
Text
Value
The sky looks blue because air molecules scatter blue sunlight more than other colors.
Surface
primary
Tool calls
[]
Usage
{
  "cached_input": null,
  "input": 18,
  "output": 18,
  "reasoning": null,
  "surface": {
    "cached_input": "absent",
    "input": "primary",
    "output": "primary",
    "reasoning": "absent",
    "total": "primary"
  },
  "total": 36
}
Stream
{
  "chunks_seen": 19,
  "completed": true,
  "used": true
}
Error
null
Unsupported reason
null
Full observation JSON
{
  "elapsed_ms": 193.44919099999993,
  "error": null,
  "finish": {
    "raw": null,
    "source": "RUN_FINISHED.metadata.tanstack.finishReason",
    "surface": "primary",
    "value": "stop"
  },
  "format": "wiretruth.observation/v1",
  "library": {
    "api": "chat",
    "language": "javascript",
    "name": "tanstack-ai",
    "version": "1.4.0"
  },
  "notes": [],
  "outcome": "returned",
  "stream": {
    "chunks_seen": 19,
    "completed": true,
    "used": true
  },
  "structured": {
    "attempted": false,
    "returned_as_success": false,
    "value": null
  },
  "text": {
    "surface": "primary",
    "value": "The sky looks blue because air molecules scatter blue sunlight more than other colors."
  },
  "tool_calls": [],
  "unsupported_reason": null,
  "usage": {
    "cached_input": null,
    "input": 18,
    "output": 18,
    "reasoning": null,
    "surface": {
      "cached_input": "absent",
      "input": "primary",
      "output": "primary",
      "reasoning": "absent",
      "total": "primary"
    },
    "total": 36
  }
}

Fixture

recorded openai-chat/usage.stream-final-chunk

ProvenanceValue
Recorded at2026-10-11T12:01:06Z
Requested modelgpt-6-luna
Returned modelgpt-6-luna
CI runhttps://github.com/kartsan03/wiretruth/actions/runs/38137650119

Reproduce

wiretruth serve openai-chat/usage.stream-final-chunk

Plain-library snippet from the shim manifest.

createOpenaiChatCompletions(model, apiKey, { baseURL: WIRETRUTH_BASE_URL_OPENAI_CHAT }); POST /v1/chat/completions. https://tanstack.com/ai/latest/docs/adapters/openai#chat-completions-api

Upstream

No matching upstream report.

History

VersionGrade
1.4.0✓ PASS
1.0.0✓ PASS
0.71.0✓ PASS