LaunchAI ModelsJune 30, 2026
Anthropic releases Claude Sonnet 5, most agentic Sonnet yet

Claude Sonnet 5 features a native 1M-token context window and introductory pricing of $2/$10 per million tokens through August 31. It scores 53 on the Artificial Analysis Intelligence Index, improving 6 points over Sonnet 4.6, with performance close to Opus 4.8 but at lower cost.
15 sources
2.1.197code.claude.com
v2.1.197github.com
Introducing Claude Sonnet 5anthropic.com
RT @claudeai: Introducing Claude Sonnet 5, our most agentic Sonnet yet. It makes plans, uses tools...x.com
Claude Sonnet 5 Is Not Frontier But Has Its Usesthezvi.substack.com
What's new in Claude Sonnet 5simonwillison.net
Anthropic launches Claude Sonnet 5 at a steep discount to its top model as the company races toward a blockbuster IPOventurebeat.com
Claude Sonnet 5 now available on Vercel AI Gatewayvercel.com
Anthropic Claude Sonnet 5 vs Sonnet 4.6 vs Opus 4.8: Agentic Coding Benchmarks, API Pricing, and Cost-Performance Tradeoffs Comparedmarktechpost.com
Anthropic’s Claude Sonnet 5 system card says more about the future of AI than its benchmarks dothenewstack.io
Claude Sonnet 5 – benchmark resultsartificialanalysis.ai
Breaking Down Sonnet 5's Releaseyoutube.com