Claude Opus 5.5 now available on MiniRouter

22 September 20261 min read

MiniRouter and Claude Opus 5.5 by Anthropic, separated by a silver fold of light on black.

Anthropic’s Claude Opus 5.5 is now on MiniRouter. It scores 66.4% on Terminal-Bench 4.0, up from 52.3% on Opus 5 and ahead of Fable 5.1’s 55.8%.

Two models

Opus 5.5$4 in, $20 out per 1M tokens. 20% less than Opus 5.anthropic/claude-opus-5.5
Opus 5.5 FastThe same model, up to 2.5x faster, at twice the price.anthropic/claude-opus-5.5-fast

Try it

Both take 1M tokens of context, text and images, and tools. Send as the model.

Opus 5.5 · cURL

curl https://api.minirouter.sh/v1/chat/completions \
  -H "Authorization: Bearer $MINIROUTER_API_KEY" \
  -H 'Content-Type: application/json' \
  --data '{
    "model": "anthropic/claude-opus-5.5",
    "max_tokens": 1024,
    "messages": [{ "role": "user", "content": "Fix this failing test." }]
  }'

View Opus 5.5 View Opus 5.5 Fast

Benchmarks and prices: Anthropic announcement.