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Claude Sonnet 4.6

Model ● Covered in 4 stories + Follow

Claude Sonnet 4.6 is Anthropic's large language model featuring a 1M context window and frontier-level performance, particularly in coding tasks. Recent analysis shows the model exhibits distinct behavioral characteristics including leanings toward warmth and deference compared to other Claude variants, and it is available through both free and low-cost tiers.

Updated 7 August 2026

Specifications

No specifications recorded yet.

Latest developments

How Claude's values vary by model and language Anthropic · 2 months ago · 8
Not all model upgrades are upgrades Microsoft · 2 months ago · 47
LWiAI Podcast #235 - Sonnet 4.6, Deep-thinking tokens, Anthropic vs Pentagon Last Week in AI · 6 months ago · 23
Last Week in AI #336 - Sonnet 4.6, Gemini 3.1 Pro, Anthropic vs Pentagon Last Week in AI · 6 months ago · 14

Timeline

Month Quarter Year

July 2026

Analysis reveals Claude Sonnet 5 has higher effective costs and lower quality than predecessor despite lower per-token pricing Feature update

March 2026

Multiple major AI model releases including Anthropic Sonnet 4.6, Google Gemini 3.1 variants, and OpenAI GPT-5.3 Instant Model release

February 2026

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