Introducing Claude Opus 5.5
Introducing Claude Opus 5.5 is Claude Opus 5.5 leads in agentic coding and knowledge work, and costs 40% less to run than Opus 5 on typical workloads.. It is ranked #150 on the AI Radar, in Frontier models, first seen 2 h ago and shared in 1 post (33.6k views).
Introducing Claude Opus 5.5 \ Anthropic Skip to main content Skip to footer Try Claude Claude Opus 5.5 September 22, 2026 Scroll down We’re introducing Claude Opus 5.5, the first model in our new Claude 5.5 family. It performs at the level of Claude Fable 5.1 on most work and costs 40% less to run than Opus 5. Claude Opus 5.5 is our first release since we called for pacing the frontier . It was tested before release by external evaluators, including Frontier Design and METR . On our automated behavioral audit, the most comprehensive alignment test we run, Opus 5.5 is the strongest-performing model we’ve tested to date. It also comes with…
What people said about Introducing Claude Opus 5.5 on X
Love the tastefulness with which anthropic ships. Main reason I got excited about 'headless' for the web is that any given page could take whatever whimsical or unique shape you wanted. With AI, there's no excuse not to push the design frontier. This is @nextjs at its finest: http://anthropic.com/claude-opus-5-5
— @rauchg, 2 h ago · 655 likes · see the post
Alternatives to Introducing Claude Opus 5.5
- Intelligence Benchmarking — Detailed intelligence benchmarking methodology for LLM quality evaluations.
- Qwen Studio — Qwen Studio offers comprehensive functionality spanning chatbot, image and video understanding, image generation,…
- 阶跃星辰 — Model page
- Claude — Claude is Anthropic's AI, built for problem solvers. Tackle complex challenges, analyze data, write code, and think…
- www-cdn.anthropic.com —
- arena.ai — Now that the model ID is publicly visible, the first Pro checkpoint that was used for the output below was…
Introducing Claude Opus 5.5 in numbers
- Rank on the AI Radar: #150 of 1773
- Shared in 1 post by 1 account: @rauchg
- 33.6k views on those posts
- First seen 2 h ago, last shared 2 h ago
- Pricing seen by Jev: paid
- Market: Frontier models
FAQ
What is Introducing Claude Opus 5.5?
Claude Opus 5.5 leads in agentic coding and knowledge work, and costs 40% less to run than Opus 5 on typical workloads. It was first shared on X 2 h ago and is ranked #150 on the AI Radar.
Is Introducing Claude Opus 5.5 free?
It is a paid product.
Who shared Introducing Claude Opus 5.5?
1 account on X, including @rauchg, in 1 post totalling 33.6k views.
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. 42.6k 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 18:12 UTC. Full method.