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Claude Opus 5.5

Also accepted:claude-opus-5-5claude-opus-5.5anthropic/claude-opus-5-5anthropic/claude-opus-5.5claude-opus-5-5-20260921anthropic/claude-opus-5.5-20260921
Anthropic
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Anthropic's Claude Opus 5.5 is the successor to Claude Opus 5 for long-running agentic coding and knowledge work. It delivers Fable 5.1-level performance at 40% lower cost ($4 / $20 per million input / output tokens), with adaptive thinking always on, 1M-token context, vision input, and tool use. Built for multi-step changes in large codebases, code review and bug finding, financial and scientific analysis, and reading dense charts and diagrams.

Providers
Capabilities
Anthropic
anthropic-byok
$0
$0
$0
$0
Unavailable
OpenRouter
openrouter-byok
$0
$0
$0
—
Unavailable
OpenCode Zen
opencode-zen-byok
$0
$0
$0
—
Unavailable
Cline
cline-byok
$0
$0
—
—
Unavailable
Usage analytics

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API & code
Uptime & Health
No uptime data yet

These providers haven't been health-probed for this model yet. The router still routes around upstreams that fail live requests — uptime fills in once probe history accrues.

Share cards
Claude Opus 5.5 share card
Claude Opus 5.5
Anthropic upstream share card
Anthropic upstream
OpenRouter upstream share card
OpenRouter upstream
OpenCode Zen upstream share card
OpenCode Zen upstream
Cline upstream share card
Cline upstream
Credits
Use your own key

Run Claude Opus 5.5 on your own key — your requests are billed by the provider. Pool callers pay AnyRouter credits.

No BYOK keys configured for this model yet.

Share a key with the pool to earn credits for every request it serves, covering your plan cost.

Text generation
Context length1,000,000 tokens
Max output128,000 tokens
ArchitectureTransformer
Categorytext
ReleasedSep 22, 2026
Modalities
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Capabilities
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