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API Overview

Openference exposes a stable OpenAI-compatible surface plus direct Anthropic format for Claude. All requests require a valid Authorization: Bearer YOUR_API_KEY header.

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Base URL

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Core Endpoints

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Format handling

  • If the model route supports the client format natively, we pass through.
  • Otherwise we automatically convert between OpenAI ↔ Anthropic ↔ Gemini.
See Format conversion for details.

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Model names

Use the exact model ID returned by GET /v1/models (or shown on the website). Some routes may map an alias to a specific upstream model ID.

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Streaming

Add "stream": true (OpenAI) or the equivalent for Anthropic. We forward SSE correctly.

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Errors

See Errors.

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Rate limits & quotas

See Rate Limits.