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Models › anthropic › Anthropic: Claude Opus 5.5

Anthropic: Claude Opus 5.5 — pricing & benchmarks

By anthropic · Updated 2026-10-04 · Reads imageslong-context / RAGreads images / documentsstep-by-step reasoning

Anthropic: Claude Opus 5.5 costs $4 per 1M input tokens and $20 per 1M output tokens, with a 1M context window. It is best suited for long-context / RAG, reads images / documents, step-by-step reasoning, and is available through one OpenAI-compatible Appmo API key.
$4Input / 1M
$20Output / 1M
1MContext
95Buzz (0-100)

What Anthropic: Claude Opus 5.5 is used for

Anthropic: Claude Opus 5.5 is best suited for long-context / RAG, reads images / documents, step-by-step reasoning. Access it through one Appmo API key alongside 458 other models — Appmo's optimizer can route to it automatically when it is the best value for a request.

What people are saying (last 30 days)

Not enough posts yet to judge community sentiment. 23 Hacker News stories (2.9K points) · 328 new GitHub repos mentioning it. How we measure this.

Use it via the Appmo API (OpenAI-compatible)

curl https://appmo.com/v1/chat/completions \
  -H "Authorization: Bearer $APPMO_KEY" \
  -d '{"model":"anthropic/claude-opus-5.5","messages":[{"role":"user","content":"Hello"}]}'

FAQ

How much does Anthropic: Claude Opus 5.5 cost?
Anthropic: Claude Opus 5.5 costs $4 per 1M input tokens and $20 per 1M output tokens ($8 blended), as of 2026-10-04. Prices are expected to fall as competition increases.

What is Anthropic: Claude Opus 5.5 best for?
Anthropic: Claude Opus 5.5 is best suited for long-context / RAG, reads images / documents, step-by-step reasoning.

How do I use Anthropic: Claude Opus 5.5?
Send requests to Appmo's OpenAI-compatible endpoint with model id "anthropic/claude-opus-5.5" and one API key — no separate provider account needed.

Is Anthropic: Claude Opus 5.5 open source?
We have no record of public weights for Anthropic: Claude Opus 5.5; treat it as a closed model available only through its provider's API.

Can Anthropic: Claude Opus 5.5 create images?
No. Anthropic: Claude Opus 5.5 can read and understand images, but it only writes text.