Leaked Claude Opus 5.5 details: 30% faster, 40% cheaper than Opus 5, $4/$20 API pricing
PanParagraf · x · 2026-09-23
Unverified leak (via @HyperHumanLabs) about Anthropic's Claude Opus 5.5:
- Reportedly performs at "Fable 5.1" level, 30% faster and 40% cheaper than Opus 5
- Claude Code: 5-hour usage limits up 20%, 25% more work fits in the same limits; Pro/Max/Team get a reset option until Oct 22 (Settings → Usage)
- API: $4/$20 per million tokens, 60% cheaper caching, thinking always on, plus an optional fast mode (up to 2.5×)
- Usage tips: give the full task with a deadline upfront; skip "think carefully" (it always thinks first); after long sessions, ask what it still needs. Writes more plainly with less jargon
Related event: Claude Opus 5.5 Spotted in Claude Code Ahead of Imminent Launch(8 posts)→
More from Models
- 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
- Users frustrated by Claude's safety blocks refusing keys, databases, repo creation — TheNasky1 · 2026-11-08