Claude Sonnet 5.5 leaks reveal Anthropic’s roadmap. See Theo’s GPT-6 Astra audit, the 4.4x token bloat trap, and Jev routing cutting agent costs by 80%.
Anthropic released Claude Opus 5.5 on September 22, 2026: 66.4% Terminal-Bench, 54.4% FrontierCode, matching Fable 5.1 at $4/$20 with 60% cheaper prompt caching.
Disclosures broken by developer Lyra confirm Anthropic is closed-beta testing Claude Opus 5.5 (‘claude-wafer-eap’), cutting pricing to $4/$20 per M tokens.