Anthropic has released Claude Opus 5, describing it as a thoughtful and proactive model that approaches the frontier intelligence of Claude Fable 5 at half the price. It is currently leading the Artificial Analysis leaderboard.
- Priced the same as Opus 4.8, with a "fast mode" available at twice the base cost.
- Demonstrates strong capability in finding cybersecurity vulnerabilities, coming close to Mythos 5 in detection.
- Deliberately not trained on cyber exploitation tasks, remaining substantially behind Mythos 5 in turning vulnerabilities into threats.
- Includes a published prompting guide for developers.
The release highlights Opus 5's ability to autonomously solve complex tasks, such as writing its own computer vision pipeline to reconstruct a 3D model from raw pixels when direct viewing was blocked.