Anthropic · Claude
Claude Sonnet 4.6
Defaultsource:wikidata https://www.wikidata.org/wiki/Q138333212
About this version
Claude Sonnet 4.6 is a balanced‑tier iteration of Anthropic’s Claude family that entered default service on 17 February 2026. It features an expanded context window of up to one million tokens, allowing it to process substantially longer inputs than earlier releases in the series.
- API string
- claude-sonnet-4-6
- Context window
- 1M ctx
- Tier
- Balanced
- Released
- Feb 17, 2026
Release & change timeline
1 event- Release
Claude Sonnet 4.6 released
Current default; Opus-level quality at $3/$15, first production-grade computer use for Sonnet.
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