Claude Sonnet 5.5: Same $2/$10 Price, 30% Faster, Fewer Tokens

Originally published on AI Tech Connect. What changed on 28 September A new mid-tier model. Anthropic released Claude Sonnet 5.5 on 28 September 2026, six days after Opus 5.5 cut its token prices by 20%. The API identifier is claude-sonnet-5-5. Same list price.