Claude Opus 5.5 debuts at 40% lower cost, with cache reads 60% cheaper
addyosmani · x · 2026-09-23
Addy Osmani introduces Claude Opus 5.5: priced 40% below Opus 5, with cache reads 60% cheaper, and performance at Claude Fable 5.1 level for most tasks. He celebrated by recreating the classic pelican-riding-a-bike demo in Three.js.
Related event: Anthropic Launches Claude Opus 5.5: Stronger, 40% Cheaper, Tops AA Index(259 posts)→
More from Models
- Google reportedly blocking Gemini subscription use in third-party coding harnesses, flagging accounts for ToS violations — PixelCactus1 · 2026-11-08
- Alnie Seed 9B model's benchmarks questioned: mismatched numbers, FP4 speed vs FP16 scores — cneuralnetwork · 2026-11-08
- Experiment: Claude commits to answers more firmly than ChatGPT on 29 of 34 science questions — AymericRoucher · 2026-11-08
- Claude Artifacts suddenly blocks writes, users asked to grant full network egress — KeepStandardVoice · 2026-11-08
- Will Qwen4 Plus be open weights? Reddit parses Alibaba's release clues — Axiomexx · 2026-11-08
- OpenAI exec floats $50/month ChatGPT Pro tier between Plus and $100 Pro — haider1 · 2026-11-08