LaunchAI ModelsJune 30, 2026
Anthropic introduces Claude Sonnet 5 as its most agentic Sonnet yet

Claude Sonnet 5 features a native 1M-token context window and promotional pricing of $2/$10 per million tokens through August 31. It is now the default model in Claude Code and ranks second only to Fable 5 on the AA-Briefcase agentic benchmark.
15 sources
Introducing Claude Sonnet 5 on AWS: Anthropic’s most capable Sonnet modelaws.amazon.com
v2.1.197github.com
2.1.201code.claude.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
Notes (and a Pelican) on Claude Sonnet 5 - the new tokenizer makes it ~1.4x more expensive for Engli...bsky.app
Claude Sonnet 5 now available on Vercel AI Gatewayvercel.com
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 vs Opus 4.8: Which Model Is Right for Your AI Workflows?mindstudio.ai