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42 lines
1.8 KiB
Markdown
42 lines
1.8 KiB
Markdown
# OpenRouter Provider Shape
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Last updated: dev@e71f8ce | 2026-08-25
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## Scope
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Canonical provider ID `openrouter`; OpenAI-compatible chat dialect; rich reader
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`src/model_capability_readers/openrouter.py`.
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## Catalog Shape
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`GET /api/v1/models` returns `data[]`. Canonical fields are:
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- `id` (falling back to `name`) and display `name`;
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- `architecture.input_modalities`, `architecture.output_modalities`, and
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compatibility `architecture.modality`;
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- `context_length` and `top_provider.max_completion_tokens`;
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- `supported_parameters`, `default_parameters`, `supported_voices`, and
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`per_request_limits`.
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Modalities determine family and vision/file/audio/image/video behavior.
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Recognized supported parameters claim tools, JSON/structured output,
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reasoning, and web search. Sampling/default parameters become controls, not
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capabilities. Descriptions, pricing, author slugs, and tokenizer names do not.
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## Provider Versus Routed Endpoint
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OpenRouter normalizes requests while routing a model to one of several
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underlying providers. The catalog model record is OpenRouter-scoped. Do not
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copy a direct-provider quirk to OpenRouter unless its normalized API and exact
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model/endpoint evidence require it. `top_provider` limits describe the current
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route class, not a permanent global model limit.
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## Fallback And Safety
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The reader receives OpenRouter through explicit selection or an exact/label-bounded `openrouter.ai` hostname hint. Future fields remain raw. If modalities are absent, it falls back to an identity-only OpenRouter record and does not parse the model slug; supported-parameter controls are not retained on that fallback path.
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## Current Gaps
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- Per-upstream endpoint differences can still invalidate an aggregate claim.
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- Catalog values change frequently and need freshness/expiry when persisted.
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