Many AI users are convinced that OpenAI is quietly running GPT-5.6 inside ChatGPT. OpenAI isn't confirming anything.

GPT-5.5 Cyber tops the CyberGym leaderboard as Anthropic's best models sit offline under a Trump administration export ban.

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

OpenAI is rolling out the full, limited-release version of GPT-5.5-Cyber—a specialized AI model that outperforms its ...

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.

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

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

Anthropic's new Claude Fable 5 is the same base model as Mythos but with guardrails attached ...

With over four years of experience writing in the housing market space, Robin Rothstein demystifies mortgage and loan concepts, helping first-time homebuyers and homeowners make informed decisions as ...

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 ...

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 ...