Claude Opus 5.5 is here. More capable, faster, and substantially cheaper. @AnthropicAI…
This is a dev post classified by Jev as AI dev tools (a launch), kept by the Dev Radar because it carries real work, not commentary.
Claude Opus 5.5 is here. More capable, faster, and substantially cheaper. @AnthropicAI keeps pushing the economics of useful AI. According to Anthropic: • 40% lower costs on typical workloads than Opus 5. • Over 30% faster output. • 66.4% on Terminal-Bench 4.0, versus Opus 5’s 52.3% and GPT-6 Astra’s 57.9%. • Clearer writing and stronger performance on long, complex coding tasks. API pricing drops to $4/$20 per million input/output tokens. Pro, Max, and Team users also get higher five-hour limits, plus a rate-limit reset they can save for later. More work completed, less time waiting, lower
Posted by Mark Kretschmann (57.2k followers) 1 h ago · 148 likes · 5.7k views · view the original post on X. Kept by the Dev Radar as AI dev tools.
More dev work like this
- I thought they said they are on a break (slow down） — @u1tra_instinct
- BREAKING: SpaceXAI just released a major Grok Build update, with Grok 4.7 now available… — @cb_doge
- roughly similar on AI R&D but a beast on agentic coding task, very impressive — @eliebakouch
- Did you quietly remove the Fable from the subscription along with the release, or why… — @tarasshyn
- New tutorial | Package segmentation with Ultralytics YOLO26 📦 — @ultralytics
- anthropic just mogged everyone with opus 5.5 — @notjazii
- Introducing https://theopenfrontier.com! — @nutlope
- @rafalwilinski — @rafalwilinski
Every post is read and classified by Jev (TypeSafe): what it is, which market it belongs to, and whether the link is a real tool. 21.2k posts from 5k X accounts over the last 21 days, 2.4k tools, 12 markets. Collected every 5 minutes, fully re-ranked every hour — last update 2026-09-22 17:37 UTC. Full method.