2Anthropic launches Fable 5.1 and Mythos 5.1 - cheaper, less restrictive, and record-setting

Anthropic shipped Fable 5.1 and Mythos 5.1, twinned versions of its most advanced model: lower token cost, fewer false-positive safeguards, record Terminal-Bench 4.0 and Humanity's Last Exam scores, plus zero-data-retention Enterprise Frontier Safeguards rolling out in fall.

3OpenAI: Astra, its first model with "critical" cybersecurity capabilities, is on the way

OpenAI says Astra, its next frontier model, is the first to reach its 'critical' cybersecurity capability threshold - finding novel vulnerabilities and chaining exploits - and it will gate those abilities behind a misalignment monitor and partner early access.