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Claude Sonnet 5.5 — Model Tracker
Claude Sonnet 5.5 in the Model Tracker: every value read on the maker's own pages, with its day.
In inglese
- Maker
- Anthropic — platform.claude.com, read 2026-10-16
- Released
- 2026-09-28 — platform.claude.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 official model overview and model-card listing do not state whether the model's weights are open.
- Licence
- Not confirmed: The official model overview and model-card listing do not name a licence for this model.
- 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 2 per 1M tokens — platform.claude.com, read 2026-10-16
- API price, output
- USD 10 per 1M tokens — platform.claude.com, read 2026-10-16
- Where
- API, Consumer app, Cloud marketplaces — platform.claude.com, read 2026-10-16
- Parameters
- Not confirmed: The official model overview and model-card listing do not publish a parameter count.
- Model card
- https://www.anthropic.com/document/claude-sonnet-5-5-system-card — platform.claude.com, read 2026-10-16
Sources
- Claude Sonnet 5.5 - Claude Platform Docs (read 2026-10-16)
- Pricing - Claude Platform Docs (read 2026-10-16)
- Model cards - Claude Platform Docs (read 2026-10-16)