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Claude Opus Latest (Claude Opus 5.5)

Anthropic · claude-opus

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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

Available from 5 hosts

HostIn $/MOut $/MCache rdCache wrContextOutputRetires
edenai$4.00$20.00$0.20$5.001M128K—
kilo$4.00$20.00$0.20$5.001M128K—
nano-gpt$4.00$20.00$0.20$5.001M128K—
openrouter$4.00$20.00$0.20$5.001M128K—
the-grid-ai————1M128K—

Price history

append-only observations · a listing writes a row only when its price moves

DateHostField$/M
2026-09-02edenaiCache read$0.50
2026-09-25edenaiCache read$0.20
2026-09-02kiloCache read$0.50
2026-09-23kiloCache read$0.20
2026-09-02nano-gptCache read$0.50
2026-09-25nano-gptCache read$0.20
2026-09-02openrouterCache read$0.50
2026-09-19openrouterCache read$0.50
2026-09-23openrouterCache read$0.20
2026-10-10openrouterCache read$0.20
2026-09-02edenaiCache write$6.25
2026-09-25edenaiCache write$5.00
2026-09-02kiloCache write$6.25
2026-09-23kiloCache write$5.00
2026-09-02nano-gptCache write$6.25
2026-09-25nano-gptCache write$5.00
2026-09-02openrouterCache write$6.25
2026-09-19openrouterCache write$6.25
2026-09-23openrouterCache write$5.00
2026-10-10openrouterCache write$5.00
2026-09-02edenaiInput$5.00
2026-09-25edenaiInput$4.00
2026-09-02kiloInput$5.00
2026-09-23kiloInput$4.00
2026-09-02nano-gptInput$5.00
2026-09-25nano-gptInput$4.00
2026-09-02openrouterInput$5.00
2026-09-19openrouterInput$5.00
2026-09-23openrouterInput$4.00
2026-10-10openrouterInput$4.00
2026-09-02edenaiOutput$25.00
2026-09-25edenaiOutput$20.00
2026-09-02kiloOutput$25.00
2026-09-23kiloOutput$20.00
2026-09-02nano-gptOutput$25.00
2026-09-25nano-gptOutput$20.00
2026-09-02openrouterOutput$25.00
2026-09-19openrouterOutput$25.00
2026-09-23openrouterOutput$20.00
2026-10-10openrouterOutput$20.00

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