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Claude Sonnet 4.6
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Overview
Claude Sonnet 4.6 is the most advanced Sonnet model, featuring upgrades in coding, computer use, long-context reasoning, agent planning, knowledge work, and design. It includes a beta 1M token context window and is now the default model for Free and Pro plan users on claude.ai and Claude Cowork, with pricing unchanged from Sonnet 4.5 at $3/$15 per million tokens.
Summary from anthropic.com.
Reports
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anthropic.com
Claude Sonnet 4.6
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Community reactions
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Hacker News · anthropic.com
Historical count: 5 · 5 saved in sample · Historical sample
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Based on 5 sampled comments from this thread. Analyzed 2026-02-18.
- Praise: Sonnet 4.6 is reportedly as capable as Opus 4.5 according to Anthropic's benchmarks, indicating that advancements in AI capabilities continue at a rapid pace.
- Praise: The competition in the AI space is driving improvements, which ultimately benefits consumers by enhancing the quality of AI tools available.
- Concern: Many users have noted that Sonnet 4.6 consumes 5-10 times more tokens than 4.5 for the same tasks, raising concerns about efficiency and usability.
- Concern: Safety evaluations reveal that the model can still be vulnerable to adversarial attacks, with a concerning 8% success rate for injection takeovers, which undermines trust in its deployment.