Here's how Anthropic and OpenAI's most powerful AI models stack up.

The victory of GPT-5.5 aligns with recent third-party analysis suggesting that OpenAI's models are currently superior at strictly adhering to multi-part, complex prompts.

Did Claude Fable 5 get dumber? Two benchmarks, two wildly different conclusions—and one routing layer that explains the whole ...

Anthropic's most powerful model ever, Fable 5, disappeared days after launch. I got to test its capabilities while it was still available.

GPT-5.6 was already running in Codex for some users before OpenAI’s government-approved preview opened to partners. A ...

The 'We The Best' Crimson Bliss cooled off fast. That's exactly why it's worth a look now.

For developers, Fable 5 is available through the Claude API as claude-fable-5. Anthropic says Fable 5 is fully available today on the Claude API and on consumption-based Enterprise plans. For ...

The final week of the UFL regular season has arrived, and while three playoff berths have already been secured, one postseason spot remains up for grabs. The Louisville Kings and Birmingham Stallions ...

Anthropic is bringing its most powerful AI model to the general public for the first time, but it’s doing it with guardrails. On Tuesday, the AI firm launched Claude Fable 5, the first publicly ...

Anthropic announced Claude Fable 5, a Mythos-class model that will be available to its enterprise customers and paid subscribers. The company unveiled Mythos in April and has limited the rollout ...

The United States government has issued a national security legal order to Anthropic to suspend access to their new Fable 5 and Mythos 5 AI Models. The order effectively compels Anthropic to cut ...

Anthropic is releasing Claude Fable 5 for general users. Fable 5 uses Mythos-class power with safety controls. Pricing is about twice that of Claude Opus 4.8. Anthropic has announced a defanged ...