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Claude Opus 5.5

Anthropic · claude-opus-5-5-default

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Claude model for long-running agentic coding and knowledge work

Specification

most-agreed values

Context
1M
Max output
128K
Released
2026-09-22
Knowledge cutoff
2026-06
Retires
—
Open weights
no
Input
text, image, pdf
Output
text

Price

US dollars per million tokens · most-agreed

Input
$4.00
Output
$20.00
Cache read
$0.20
Cache write
$5.00

Batch and priority prices

US dollars per million tokens · per listing

PriceListing$/M
Batch inputvertex_ai-anthropic_models$2.50
Batch outputvertex_ai-anthropic_models$12.50
Cache write, 1 hourvertex_ai-anthropic_models$8.00

Batch input is 38% below the interactive input price at the same listing.

Available from 3 hosts

HostIn $/MOut $/MCache rdCache wrContextOutputRetires
google-vertex$4.00$20.00$0.20$5.001M128K—
google-vertex-anthropic$4.00$20.00$0.20$5.001M128K—
vertex_ai-anthropic_models$4.00$20.00$0.20$5.001M128K—

Other listings of this model

this page is one of them

The corpus files Claude Opus 5.5 under several keys. This page is the claude-opus-5-5-default listing. The full record — every host, every price and every benchmark score — is on the main Claude Opus 5.5 page.

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