Overkill for the average user, but the models are smarter than ever for professionals.

Anthropic took the wraps off yet another set of AI models on Monday, Fable 5.2 and Mythos 5.2, which are ready to use and make substantial improvements over their predecessors. While an average user may not see the benefits of the latest models, Anthropic says they’re best for the “most ambitious, open-ended work.”

The new Claude models show greatly improved metrics in areas like coding (don’t they all?), reasoning, vision, cybersecurity and biology. The latter of which have strong safeguards against misuse in the Fable model, which give Anthropic enough confidence to release it to the public.

Fable 5.2 and Mythos 5.2 generate output up to 30% faster than their predecessors and are available at lower prices — a trend we’ve continued to see lately with most new AI model releases. 

Anthropic dropped a series of benchmarks showing off how much better the new models are compared with the previous ones. And generally, they’re impressive. Fable 5.2 outperforms Fable 5.1 in one agentic coding benchmark at 49.1% versus 32.4% at “Xhigh effort,” bringing a meaningful distance in performance. As far as cybersecurity benchmarks are concerned, Mythos 5.2 scores a jump from 61.7% to 76.3% — a rather impressive jump — if you’re using the model to its fullest potential.

2 is its most capable model for cybersecurity engineering. The new model is capable of catching more vulnerabilities and is better at reproducing and fixing them.

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