Model
Claude Sonnet 5
by Anthropic
Family
Claude 5 / Sonnet
Context window
1,000,000 tokens
Open weights
No
Release date
2026-06-30
Benchmark notes
The mid-tier Claude 5 model and recommended default for most developers. Introductory pricing of $2/$10 per million input/output tokens through August 31, 2026; standard pricing is $3/$15. Designed for daily coding, scaled production, and complex professional workflows. Scored 63.2% on SWE-Bench Pro per third-party testing. Supports tool use, extended thinking, and autonomous terminal/browser operation.