Model / anthropic

Claude Opus 5.5

Claude Opus 5.5 is Anthropic's flagship model for demanding reasoning, coding, and long-horizon agentic work, succeeding Claude Opus 5. It is particularly strong at multi-step changes in large codebases, code...

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Know · from the live catalog

Model id: anthropic/claude-opus-5.5
Maker: anthropic
Context window: 1M tokens
Input price: $4.00 / 1M tokens
Output price: $20.00 / 1M tokens
Input types: text, image, file
Output types: text
Tool calling: supported
Reasoning: supported
Listed: 2026-09-22

Verify · per provider

Preview · not live

Provider bond

10,000 USDG required before live traffic

Quality canaries

Weights fingerprint, exact-answer set, empty-reply rate

Signed receipt

Ed25519 over model, provider, tokens, cost and hashes

TEE attestation

Required on the attested lane only

No provider is bonded yet. These checks show what each call to this model will carry once bonded providers go live.

Route · node

const answer = await client.chat.completions.create({
  model: "anthropic/claude-opus-5.5",
  messages: [{ role: "user", content: "Hello" }],
});

answer.receipt; // signed by the router once receipts ship

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