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Claude Opus 5.5 — Model Tracker
Claude Opus 5.5 in the Model Tracker: every value read on the maker's own pages, with its day.
In inglese
- Maker
- Anthropic — www.anthropic.com, read 2026-10-16
- Released
- 2026-09-22 — www.anthropic.com, read 2026-10-16
- Status
- Generally available — platform.claude.com, read 2026-10-16
- Retired
- Not confirmed
- Takes
- Text, Image — platform.claude.com, read 2026-10-16
- Returns
- Text — platform.claude.com, read 2026-10-16
- Open weights
- Not confirmed: The maker's pages reviewed do not state whether Claude Opus 5.5's weights are open or downloadable.
- Licence
- Not confirmed: The maker's pages reviewed do not name a licence for the model weights.
- Context window
- 1,000,000 tokens — platform.claude.com, read 2026-10-16
- Longest answer
- 128,000 tokens — platform.claude.com, read 2026-10-16
- Knowledge cutoff
- 2026-06 — platform.claude.com, read 2026-10-16
- API price, input
- USD 4 per 1M tokens — platform.claude.com, read 2026-10-16
- API price, output
- USD 20 per 1M tokens — platform.claude.com, read 2026-10-16
- Where
- API, Cloud marketplaces — www.anthropic.com, read 2026-10-16
- Parameters
- Not confirmed: The maker's pages reviewed do not publish a parameter count.
- Model card
- https://www.anthropic.com/claude-opus-5-5-system-card — www.anthropic.com, read 2026-10-16
Sources
- Claude Opus 5.5 (read 2026-10-16)
- Introducing Claude Opus 5.5 (read 2026-10-16)
- Pricing (read 2026-10-16)
- Opus 5.5 System Card (read 2026-10-16)
- Models overview (read 2026-10-16)