Anthropic releases Opus 5.5 with lower prices and Fable-level performance
Anthropic called it "the strongest-performing model we've tested to date."
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Anthropic released a new artificial intelligence model called Opus 5.5, which the company says achieves state-of-the-art performance in coding and knowledge work while costing significantly less to run than the previous version. The model performs comparably to or better than a larger competitor model on many benchmarks and has been modified to communicate more clearly by avoiding jargon and placing important information at the start of messages. This release follows the company's CEO's recent public commitment to deliberately slow down AI capability development in order to allow safety and risk prevention efforts to keep pace. The model underwent standard safety training and external evaluation before release, with the company indicating that more advanced safety systems are being prepared for future models.
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