✓ PASS

pydantic-ai 2.61.0

stream.utf8 · gemini

Requirements

Id	Level	Status	Evidence
text-reported	MUST	SATISFIED	text.value="Café Zürich — καλημέρα! 東京で会いましょう 🌸🎉" (primary); truth.text="Café Zürich — καλημέρα! 東京で会いましょう 🌸🎉"
no-replacement-chars	MUST	SATISFIED	text.value="Café Zürich — καλημέρα! 東京で会いましょう 🌸🎉" (primary); U+FFFD count=0

What the provider sent

Finish: stop
Raw finish: STOP
Text: Café Zürich — καλημέρα! 東京で会いましょう 🌸🎉
Tool calls: []
Usage: { "alternatives": {}, "cached_input": null, "input": 20, "output": 16, "raw": { "candidatesTokenCount": 16, "promptTokenCount": 20, "promptTokensDetails": [ { "modality": "TEXT", "tokenCount": 20 } ], "serviceTier": "standard", "totalTokenCount": 36 }, "reasoning": null, "total": 36 }
Stream completed: true
Error: null

Wire excerpt

status: 200
content-type: text/event-stream
body (sse):
data: {"candidates": [{"content": {"parts": [{"text": "Café"}],"role": "model"},"index": 0}],"usageMetadata": {"promptTokenCount": 20,"candidatesTokenCount": 2,"totalTokenCount": 22,"promptTokensDetails": [{"modality": "TEXT","tokenCount": 20}],"serviceTier": "standard"},"modelVersion": "gemini-3.5-flash-lite","responseId": "fgTOari7NYzgjMcP3JzqoA0"}


data: {"candidates": [{"content": {"parts": [{"text": " Zürich — καλημέρα! 東京で会いましょう 🌸🎉"}],"role": "model"},"index": 0}],"usageMetadata": {"promptTokenCount": 20,"candidatesTokenCount": 16,"totalTokenCount": 36,"promptTokensDetails": [{"modality": "TEXT","tokenCount": 20}],"serviceTier": "standard"},"modelVersion": "gemini-3.5-flash-lite","responseId": "fgTOari7NYzgjMcP3JzqoA0"}


data: {"candidates": [{"content": {"parts": [{"text": "","thoughtSignature": "EmAKXgFpFH0ToIziWD0S62w/cQyQTW/chQMNatQSwypYBrF2ETjVC5O4hF1imTO3ZhjEsEwUaLOuawCpmlmW2ZOyVFC+U5tXyeqaCynxX+OKwKOzt1yXxVSgICqLcZ0Udy4="}],"role": "model"},"finishReason": "STOP","index": 0}],"usageMetadata": {"promptTokenCount": 20,"candidatesTokenCount": 16,"totalTokenCount": 36,"promptTokensDetails": [{"modality": "TEXT","tokenCount": 20}],"serviceTier": "standard"},"modelVersion": "gemini-3.5-flash-lite","responseId": "fgTOari7NYzgjMcP3JzqoA0"}

What the library reported

Outcome

returned

Finish

{
  "raw": "STOP",
  "source": "ModelResponse.finish_reason",
  "surface": "primary",
  "value": "stop"
}

Text

Value: Café Zürich — καλημέρα! 東京で会いましょう 🌸🎉
Surface: primary

Tool calls

[]

Usage

{
  "cached_input": 0,
  "input": 20,
  "output": 16,
  "reasoning": 0,
  "surface": {
    "cached_input": "primary",
    "input": "primary",
    "output": "primary",
    "reasoning": "primary",
    "total": "primary"
  },
  "total": 36
}

Stream

{
  "chunks_seen": 6,
  "completed": true,
  "used": true
}

Error

null

Unsupported reason

null

Full observation JSON

{
  "elapsed_ms": 295.369790866971,
  "error": null,
  "finish": {
    "raw": "STOP",
    "source": "ModelResponse.finish_reason",
    "surface": "primary",
    "value": "stop"
  },
  "format": "wiretruth.observation/v1",
  "library": {
    "api": "Agent.run_stream_events",
    "language": "python",
    "name": "pydantic-ai",
    "version": "2.61.0"
  },
  "notes": [],
  "outcome": "returned",
  "stream": {
    "chunks_seen": 6,
    "completed": true,
    "used": true
  },
  "structured": {
    "attempted": false,
    "returned_as_success": false,
    "value": null
  },
  "text": {
    "surface": "primary",
    "value": "Café Zürich — καλημέρα! 東京で会いましょう 🌸🎉"
  },
  "tool_calls": [],
  "unsupported_reason": null,
  "usage": {
    "cached_input": 0,
    "input": 20,
    "output": 16,
    "reasoning": 0,
    "surface": {
      "cached_input": "primary",
      "input": "primary",
      "output": "primary",
      "reasoning": "primary",
      "total": "primary"
    },
    "total": 36
  }
}

Fixture

recorded gemini/stream.utf8

Provenance	Value
Recorded at	2026-10-13T10:14:22Z
Requested model	gemini-3.5-flash-lite
Returned model	gemini-3.5-flash-lite
CI run	https://github.com/kartsan03/wiretruth/actions/runs/38381941285

Reproduce

wiretruth serve gemini/stream.utf8

Plain-library snippet from the shim manifest.

GoogleModel(model, provider=GoogleProvider(base_url=WIRETRUTH_BASE_URL_GEMINI, api_key=WIRETRUTH_API_KEY)); host root

Upstream

No matching upstream report.

History

Version	Grade
2.61.0	✓ PASS
2.56.0	✓ PASS