Anthropic
Claude Sonnet 4.5
claude-sonnet-4-5-20250929- Context
- 200000
- Max output
- 64000
- Released
- 2025-09-29
- Weights
- Proprietary
API pricing
Anthropic · USD / 1M tokens
Input price $3 · Output price $15
This browser has local bookmarks. Merge them into this account? Duplicates are skipped and local data is kept.
Permanently delete your site account and cloud bookmarks, and sign out all devices. Existing local bookmarks stay. This cannot be undone.
Add a series from the atlas to track your reading progress.
Browse all seriesSave articles with the bookmark beside their title, then revisit them here.
Clear local reading history and positions?
Articles appear here after a little reading, ready for your next visit.
Reading history could not be saved. Check browser storage settings.
Anthropic
claude-sonnet-4-5-20250929Anthropic · USD / 1M tokens
Input price $3 · Output price $15