Anthropic: Claude Opus 5.5

anthropic/claude-opus-5.5

CHAT High tier ReasoningMultimodal Proprietary (API-only)

Anthropic: Claude Opus 5.5 (anthropic/claude-opus-5.5) is a chat model from openrouter with a 1M-token context window; proprietary (API-only); capabilities tools, vision, reasoning; input image, pdf, text; output text.

1MContext

128KMax output

$4$ / 1M in

Pricing

Input: $4 / 1M tokens
Output: $20 / 1M tokens
Currency: USD
Note: Indicative US list price — verify with the vendor.

Indicative US list price — a reference only, verify with the vendor. Source: litellm. Last verified 2026-09-26.

Specifications

Context window: 1,000,000 tokens (1M)
Max output: 128,000 tokens
Weights: Proprietary (API-only)
Input modalities: image pdf text
Output modalities: text
Knowledge cutoff: 2026-06
Release date: 2026-09-22

Capabilities

tools vision reasoning

Provenance

committedmodels-devopenrouter-api

Last verified: 2026-10-30

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