Opus 5.5 Is 20% Cheaper. The Other 20% Is Anthropic Asking You to Let It Think Less.
Anthropic's flagship price cut is real and checks out against its own price list. The "closer to 40%" savings number the company is showcasing three weeks before a roughly $2 trillion IPO roadshow depends on assumptions its own documentation quietly contradicts.

Everything this piece is built on.
- What's new in Claude Opus 5.5Anthropic (Claude Platform Docs)
- Introducing Claude Opus 5.5Anthropic
- PricingAnthropic (Claude Platform Docs)
- Anthropic releases Claude Opus 5.5, beating Fable 5.1 on key agentic benchmarks at 60% cheaper API priceVentureBeat
- Anthropic releases Opus 5.5 with lower prices and Fable-level performanceTechCrunch
- Anthropic Launches Claude Opus 5.5, Cuts Costs 40% and Scraps 5-Hour Usage CapsBenzinga
- Anthropic releases Opus 5.5 and cuts pricing by 20%. Your agent calls might secretly get routed to an older model.The New Stack
- Anthropic made Opus 5.5 cheaper. Then it broke four things your agent depends on.The New Stack
- Claude Opus 5.5: Pricing, Benchmarks and Breaking ChangesDigital Applied
- Claude Opus 5.5 is cheaper. There's a catch.Rolling Out
- Anthropic Reveals Claude Opus 5.5's Classifiers Silently Reroute RequestsPasquale Pillitteri
- OpenAI's GPT-6 Sol and Luna Cut Prices 50%Yahoo Finance
- OpenAI cuts GPT-6 prices in half with Sol and LunaThe Next Web
- GPT-6 Sol and Luna: API Prices, Benchmarks and Trade-offsDigital Applied
- Anthropic Targets November IPO as Revenue SurgesPYMNTS
- Anthropic targets November for IPO, pushing back from OctoberCryptobriefing
- OpenAI-backed Harvey Launches New Legal Model Based On Kimi K3 SystemDataconomy
- Harvey lands $550M at $15.6B valuation as it builds its own legal AI modelsTech Funding News