Claude Opus 4.5: Big gains in PotatoMonetBench from Opus 4.5 to Fable: "There are two controls. One is slider, in which one side is labelled Maximum Potato and the other is Formalware, there are four…

Anthropic released Claude Opus 4.5 on November 24, 2025, with benchmark scores including 74.5 in coding, 94.9 in math, and 14.2 on Humanity's Last Exam, as confirmed by official access and third-party sources like BenchLM.ai and Epoch AI.

Anthropic /providers/anthropic Claude Opus 4.5 Is Claude Opus 4.5 out yet? Yes. How we confirmed it Released via official access November 24, 2025 at 12:00 AM UTC Waiting for Anthropic's next model? One click creates your free account or signs you into an existing one and turns on alerts for Anthropic releases. There's no password to set, and you can unsubscribe any time. Benchmarks Coding 34 Claude Opus 4.5 · via BenchLM.ai · captured Jul 3, 2026 · source https://benchlm.ai/embed/leaderboard?category=coding 74.5 Agentic 19 Claude Opus 4.5 · via BenchLM.ai · captured Jul 3, 2026 · source https://benchlm.ai/embed/leaderboard?category=agentic 73.5 Reasoning 25 Claude Opus 4.5 · via BenchLM.ai · captured Jul 3, 2026 · source https://benchlm.ai/embed/leaderboard?category=reasoning 69.6 Knowledge 13 Claude Opus 4.5 · via BenchLM.ai · captured Jul 3, 2026 · source https://benchlm.ai/embed/leaderboard?category=knowledge 82.4 Math 5 Claude Opus 4.5 · via BenchLM.ai · captured Jul 3, 2026 · source https://benchlm.ai/embed/leaderboard?category=math 94.9 MultimodalGrounded 49 Claude Opus 4.5 · via BenchLM.ai · captured Jul 3, 2026 · source https://benchlm.ai/embed/leaderboard?category=multimodalGrounded 61.2 Multilingual 20 Claude Opus 4.5 · via BenchLM.ai · captured Jul 3, 2026 · source https://benchlm.ai/embed/leaderboard?category=multilingual 81.4 Humanity's Last Exam claude-opus-4-5-20251101 · via Epoch AI · captured Jul 3, 2026 · source https://epoch.ai/benchmarks/hle 14.2 LM Arena 25 claude-opus-4-5-20251101 · via LM Arena · 71,135 votes · captured Jul 3, 2026 · source https://lmarena.ai/leaderboard 1469.28 Sourced metrics mirrored with attribution — not community sentiment. Data from BenchLM.ai https://benchlm.ai . Data from Epoch AI, “AI Benchmarking Hub” https://epoch.ai/benchmarks CC BY 4.0 . Vibe rating How this model actually feels to use, rated by the people here. No vibe ratings yet. Be the first. Sign in /signin to rate this model. Model Pulse How is this model behaving today? One check-in per person per day: the running record of “did they nerf it”. Resets at midnight UTC. No check-ins yet today. Be the first to log how this model is behaving. Sign in /signin Community consensus An AI summary of the public comments here. Not a sourced fact. Not enough public feedback yet to summarize. Add a comment to help build the picture. Compare Claude Opus 4.5 with another model → /compare?models=claude-opus-4-5 Also waiting on: ChatGPT 5.6 /models/chatgpt-5-6 , Gemini 3.5 Pro /models/gemini-3-5-pro , Claude Fable 5.1 /models/claude-fable-5-1 , Claude Mythos 5.1 /models/claude-mythos-5-1 Comments Missing a model, or wishing OutYet did something it doesn't? Tell us what to build /submit .