Reasoning Models & the AGI Debate AnthropicFeb 17, 2026

Anthropic releases Claude Sonnet 4.6

Claude Sonnet 4.6 released — 1M-token context window in beta, pricing unchanged at $3/$15 per 1M tokens

Why it matters

Became the default model for Free and Pro plans in claude.ai and Claude Cowork; Anthropic reported that early-access developers strongly preferred it to its predecessor and often to Opus 4.5 from November 2025

Source — Primary sources first; secondary reports are labelled “Press”

Officialanthropic.comhttps://www.anthropic.com/news/claude-sonnet-4-6

Added in Week 41, 2026 · See that week

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