Claude Sonnet 4.6 delivers frontier-level AI for free and cheap-seat users

Anthropic released Claude Sonnet 4.6, a major upgrade that brings near-Opus-level AI performance to free and Pro users without price increases. The new model features improved coding abilities, better computer interaction skills, and a 1-million-token context window that handles entire codebases or lengthy documents in single sessions. Developer testing shows 70% prefer Sonnet 4.6 over its predecessor, with users reporting better code comprehension and reduced frustration during long work sessions.