1M-token context generally available
The 1M-token context window leaves beta for Opus 4.6 and Sonnet 4.6 at standard pricing, with up to 600 images or PDF pages per request.
Removes the long-context premium and beta header, so 1M tokens run at standard per-token rates, with unified rate limits across context lengths and a media limit raised to 600 images or PDF pages per request. 1M is the default window on every later Claude 5-generation model.
- Date
- Friday, 13 March 2026
- Lab
- Anthropic
- Kind
- feature
- Access
- closed API
- Price
- Standard per-token pricing, no long-context premium
Figures
| Measure | Value | Measured by |
|---|---|---|
| Context window | 1M tokens GA at standard pricing for Opus 4.6 and Sonnet 4.6 | company |
Models overview (2026-10) lists 1M context for Fable 5.1, Opus 5.5 and Sonnet 5.5 and 200K for Haiku 4.5.
Sources
- platform.claude.com/docs/en/release-notes/overview
- platform.claude.com/docs/en/docs/about-claude/models/overview
This record was checked against its sources on 6 October 2026. How we check