The day in AI
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Launches and products
17 Feb 2026AnthropicClaude Sonnet 4.6 Claude Sonnet 4.6 becomes the default Free and Pro model, preferred over Opus 4.5 by 59% of users, at unchanged $3/$15 pricing.17 Feb 2026xAIGrok 4.20 (beta) and Multi-agent Grok 4.20 enters public beta with a multi-agent mode where four agents debate in parallel before answering; API follows in March.