Claude Opus 5.5 is out.
It hits Fable level on most tasks, costs less than Opus 5, and is faster than the previous Opus. That is what every recap will say today. It is also the least useful part of the story. Most people are not underpowered. They are underspecified. They
Opus 5 vs. Opus 5.5
Amazing LV up. 🤯
AI agents got their leash today
Guardrails First The agent story shifted from capability demos to control surfaces. BNB Chain’s v0.4 Agent Lifecycle Protocol draft puts spend caps and approved providers at the wallet signature layer, while Teneo’s verifier round-up says cheap
GPT-6 Sol vs Opus 5
I build a robotic hummingbird using three.js with same prompt in both models GPT-6 Sol is good and cheap with 50% off on API pricing but this is against the older Opus 5 model and not opus 5.5 which is far better and cheaper than Opus 5 both the outputs are
You have reached the end of the archive
All of Claude Opus 5