Anthropic launches Claude Opus 5 with near-Fable performance at half the cost
Anthropic has launched Claude Opus 5, its latest advanced AI model for complex coding, agentic workflows, scientific research, and knowledge work. It replaces Opus 4.8 at the same API pricing of $5 per million input tokens and $25 per million output tokens, while offering performance close to Claude Fable 5 at roughly half the cost for comparable workloads.
In benchmarks, Opus 5 scored 43.3% on Frontier-Bench v0.1, more than doubling Opus 4.8’s result, and achieved around three times the score of the next-best model on ARC-AGI 3. It also came close to Fable 5 on CursorBench 3.2 at half the cost and outperformed Fable 5 and GPT-5.6 Sol on several other benchmarks. Anthropic also reported stronger results at lower costs on Zapier AutomationBench and OSWorld 2.0.
Opus 5 is now the default model for Claude Max subscribers and the most capable option available to Claude Pro users. Developers can also change Claude’s tool permissions during active conversations without invalidating the prompt cache. An optional Fast mode delivers 2.5 times the speed at twice the standard price, and the model is available across Anthropic’s products and API under the identifier claude-opus-5.
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External links
- Introducing Claude Opus 5Anthropic • Official source
- Anthropic releases Claude Opus 5: Here's how it's different than what's already out thereFortune
- Claude Opus 5 Outscores Fable 5 on Most Benchmarks—At Half the PriceDecrypt
- Anthropic Says Opus 5 Can Nearly Match Its Top-Performing Model For Half The PriceEngadget
- Anthropic launches Claude Opus 5 with near-Fable intelligence at half the priceNeowin
Comments
Half the cost is the part I care about. I run the same few tasks every day, not benchmarks, so price is what decides which model I keep open. If it works well on real tasks, that matters more than the scores. I'll test it on my own work before switching.
This is Artificial Analysis - Independent analysis of AI 25-07-2026. Intelligence Index Claude Opus 5 (max) 61 Claude Fable 5 (with fallback) 60
Coding Index Claude Opus 5 78 GPT-5.6 Sol (max) 77.4 GPT-5.6 Terra (max) 76.7 Claude Fable 5 (with fallback) 76.5
Agentic Index Claude Opus 5 (max) 55.3 GPT-5.6 Sol (max) 54 Claude Fable 5 (with fallback) 52.8
Different story....
Its rumored its benchmaxxed and doesnt perform as well as they claim
Pretty much standard in the industry sadly, most of AI is marketing and hype to sustain the magic infinite money glitch they benefit for.