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Model passport

Anthropic: Claude Opus 4.5

claude-4-5-opus
  • 200,000 context
0/27axes covered

How to run it

Use it hosted

API model IDanthropic/claude-opus-4.5
Context length200,000 tokens
Max output64,000 tokens
Acceptsfile, image, text
Input price$5 per 1M tokens
Cached input price$0.50 per 1M tokens
Output price$25 per 1M tokens

API parameters this endpoint supports

Include reasoningMax completion tokensMax tokensReasoningResponse formatStop sequencesStructured outputsTemperatureTool choiceTool callingTop-kVerbosity

Example request

curl https://openrouter.ai/api/v1/chat/completions \
  -H "Authorization: Bearer $OPENROUTER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"anthropic/claude-opus-4.5","messages":[{"role":"user","content":"Hello"}]}'

View on OpenRouter →

Identifiers, limits and prices are synced from the upstream source shown above. Any field we haven't synced is left out entirely rather than guessed.

No benchmark we track has published a result for this model yet, so there is no score card — only the run guide above. It will appear here once any board we ingest scores it.

How the leaderboards work →