LaunchAI ModelsJune 30, 2026
Introducing Claude Sonnet 5

Claude Sonnet 5 launches with a 1M-token context window and promotional pricing of $2/$10 per Mtok through August 31. Anthropic says it is close to Opus 4.8 in agentic performance, with improvements in reasoning, tool use, and coding over Sonnet 4.6.
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
[AINews] Sonnet 5 today, and Fable 5 tomorrowlatent.space
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
What Is the 'Fable Mode' Skill? How to Make Cheaper Models Think Like Frontier AImindstudio.ai
Anthropic Claude Sonnet 5 vs Sonnet 4.6 vs Opus 4.8: Agentic Coding Benchmarks, API Pricing, and Cost-Performance Tradeoffs Comparedmarktechpost.com
Claude Sonnet 5 – benchmark resultsartificialanalysis.ai