LaunchAI ModelsJune 30, 2026
Anthropic launches Claude Sonnet 5

Available now on all plans and via API at $3/M input tokens and $15/M output tokens (introductory pricing through August 31, 2026). Its performance is close to Opus 4.8 but at a lower price, with significant improvements over Sonnet 4.6 in reasoning, tool use, and coding.
15 sources
Introducing Claude Sonnet 5 on AWS: Anthropic’s most capable Sonnet modelaws.amazon.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
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
Claude Sonnet 5 vs Opus 4.8: Which Model Is Right for Your AI Workflows?mindstudio.ai
Sonnet 5: First impressions by a trained philosopherclaude.ai
Claude Sonnet 5 – benchmark resultsartificialanalysis.ai