Anthropic has launched Claude Sonnet 4.6, its most capable mid-tier model to date, delivering comprehensive upgrades in coding, computer use, and long-context reasoning while maintaining the same price point as its predecessor.
- The model features a 1 million token context window in beta, allowing it to process entire codebases or lengthy documents in a single request.
- In developer testing, users preferred Sonnet 4.6 over Sonnet 4.5 approximately 70% of the time and over Opus 4.5 59% of the time.
- On the SWE-bench Verified benchmark, Sonnet 4.6 scores 79.6%, approaching Opus 4.6’s 80.8% and marking the smallest performance gap between tiers in any Claude generation.
- Computer use capabilities improved dramatically, scoring 72.5% on OSWorld-Verified, nearly doubling GPT-5.2’s score of 38.2% and matching Opus 4.6’s 72.7%.
- The update includes adaptive thinking, extended thinking, and context compaction in beta, alongside improved resistance to prompt injection attacks.
Claude Sonnet 4.6 is now available on all Claude plans, Claude Code, the API, and major cloud platforms including Microsoft Azure AI Foundry.