Anthropic just dropped Claude Opus 5.5.
This is a AI post classified by Jev as Frontier models (a model release), kept by the AI Radar because it carries real work, not commentary.
Anthropic just dropped Claude Opus 5.5. > Performs at the level of Claude Fable 5.1 > Beats GPT-6 Astra on most benchmarks. > Costs 40% less to run than Opus 5.
Posted by AshutoshShrivastava (81.6k followers) 1 h ago · 131 likes · 4.9k views · view the original post on X. Kept by the AI Radar as Frontier models.
More AI work like this
- use opus 5.5 on medium or high. — @Ananth7e
- is this pacing the frontier — @justalexoki
- Live look from the OpenAI office today: — @uzairansar
- What a task costs on Opus 5.5… — @cxocommunity
- Claude Opus 5.5 takes the pelican for a ride. 🚲 — @YouWareAI
- Opus 5.5 is here! — @AdamHoltererer
- Here's how Anthropic models were being used before today's Opus 5.5 launch. — @PeterJ_Walker
- roughly similar on AI R&D but a beast on agentic coding task, very impressive — @eliebakouch
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. 42.4k posts from 5k X accounts over the last 14 days, 1.8k tools, 19 markets. Collected every 5 minutes, fully re-ranked every hour — last update 2026-09-22 17:33 UTC. Full method.