~ LOSSY

any-llm 1.40.2

stream.missing-finish · ollama

Requirements

Id	Level	Status	Evidence
no-normal-stop	MUST	SATISFIED	outcome=returned; finish.value=null (absent); truth.finish="none"; forbidden finish="stop"
stream-incomplete	MUST	NOT_OBSERVABLE	stream.completed=null; outcome=returned; truth.stream_completed=false

What the provider sent

Finish: none
Raw finish: null
Text: Octopuses are master of camouflage, relying on a distinct ability where their color
Tool calls: []
Usage: { "alternatives": {}, "cached_input": null, "input": null, "output": null, "raw": {}, "reasoning": null, "total": null }
Stream completed: false
Error: null

Wire excerpt

status: 200
content-type: application/x-ndjson
body (ndjson):
{"model":"qwen3.5:0.8b","created_at":"2026-10-12T19:01:19.421674958Z","message":{"role":"assistant","content":"Oct"},"done":false}
{"model":"qwen3.5:0.8b","created_at":"2026-10-12T19:01:19.533325633Z","message":{"role":"assistant","content":"op"},"done":false}
{"model":"qwen3.5:0.8b","created_at":"2026-10-12T19:01:19.533383631Z","message":{"role":"assistant","content":"uses"},"done":false}
{"model":"qwen3.5:0.8b","created_at":"2026-10-12T19:01:19.533501035Z","message":{"role":"assistant","content":" are"},"done":false}
{"model":"qwen3.5:0.8b","created_at":"2026-10-12T19:01:19.65099542Z","message":{"role":"assistant","content":" master"},"done":false}
{"model":"qwen3.5:0.8b","created_at":"2026-10-12T19:01:19.759551535Z","message":{"role":"assistant","content":" of"},"done":false}
{"model":"qwen3.5:0.8b","created_at":"2026-10-12T19:01:19.872036409Z","message":{"role":"assistant","content":" camouflage"},"done":false}
{"model":"qwen3.5:0.8b","created_at":"2026-10-12T19:01:19.982184117Z","message":{"role":"assistant","content":","},"done":false}
{"model":"qwen3.5:0.8b","created_at":"2026-10-12T19:01:19.982211749Z","message":{"role":"assistant","content":" relying"},"done":false}
{"model":"qwen3.5:0.8b","created_at":"2026-10-12T19:01:20.092858018Z","message":{"role":"assistant","content":" on"},"done":false}
{"model":"qwen3.5:0.8b","created_at":"2026-10-12T19:01:20.092890519Z","message":{"role":"assistant","content":" a"},"done":false}
{"model":"qwen3.5:0.8b","created_at":"2026-10-12T19:01:20.202009085Z","message":{"role":"assistant","content":" distinct"},"done":false}
{"model":"qwen3.5:0.8b","created_at":"2026-10-12T19:01:20.315262694Z","message":{"role":"assistant","content":" ability"},"done":false}
{"model":"qwen3.5:0.8b","created_at":"2026-10-12T19:01:20.4294355Z","message":{"role":"assistant","content":" where"},"done":false}
{"model":"qwen3.5:0.8b","created_at":"2026-10-12T19:01:20.510076663Z","message":{"role":"assistant","content":" their"},"done":false}
{"model":"qwen3.5:0.8b","created_at":"2026-10-12T19:01:20.543159517Z","message":{"role":"assistant","content":" color"},"done":false}

What the library reported

Outcome

returned

Finish

{
  "raw": null,
  "source": null,
  "surface": "absent",
  "value": null
}

Text

Value: Octopuses are master of camouflage, relying on a distinct ability where their color
Surface: primary

Tool calls

[]

Usage

{
  "cached_input": null,
  "input": null,
  "output": null,
  "reasoning": null,
  "surface": {
    "cached_input": "absent",
    "input": "absent",
    "output": "absent",
    "reasoning": "absent",
    "total": "absent"
  },
  "total": null
}

Stream

{
  "chunks_seen": 16,
  "completed": null,
  "used": true
}

Error

null

Unsupported reason

null

Full observation JSON

{
  "elapsed_ms": 267.96215679496527,
  "error": null,
  "finish": {
    "raw": null,
    "source": null,
    "surface": "absent",
    "value": null
  },
  "format": "wiretruth.observation/v1",
  "library": {
    "api": "any_llm.completion",
    "language": "python",
    "name": "any-llm",
    "version": "1.40.2"
  },
  "notes": [],
  "outcome": "returned",
  "stream": {
    "chunks_seen": 16,
    "completed": null,
    "used": true
  },
  "structured": {
    "attempted": false,
    "returned_as_success": false,
    "value": null
  },
  "text": {
    "surface": "primary",
    "value": "Octopuses are master of camouflage, relying on a distinct ability where their color"
  },
  "tool_calls": [],
  "unsupported_reason": null,
  "usage": {
    "cached_input": null,
    "input": null,
    "output": null,
    "reasoning": null,
    "surface": {
      "cached_input": "absent",
      "input": "absent",
      "output": "absent",
      "reasoning": "absent",
      "total": "absent"
    },
    "total": null
  }
}

Fixture

derived ollama/stream.missing-finish

Provenance	Value
Transform	strip_finish
Source fixture	ollama/truncation.text-stream
Rationale	The stream ends cleanly without its finish signal.
Evidence	https://github.com/pydantic/pydantic-ai/issues/6610

Reproduce

wiretruth serve ollama/stream.missing-finish

Plain-library snippet from the shim manifest.

any_llm.completion(model=model, provider='ollama', api_base=WIRETRUTH_BASE_URL_OLLAMA, api_key=WIRETRUTH_API_KEY)

Upstream

reported Issue

Fixed in: not specified

A stream that ends before the provider's terminal signal returns the partial chunks normally, with no error and no incomplete flag (reproduced on 1.40.2 and 1.50.0). The OpenAI Responses path reports the output item as incomplete and passes.

History

Version	Grade
1.40.2	~ LOSSY
1.38.0	~ LOSSY
1.33.0	~ LOSSY