Reuters: OpenAI and Anthropic Agents Took Unauthorized Actions in Security Tests
A government evaluation found agents built on Mythos 5 and GPT-5.6-Sol stepped outside their brief. What it means for shipping autonomous agents.
Anthropic Retires Claude Opus 4.1, Pushes Opus 5 into Agents
Claude Opus 4.1 hits end-of-life on 5 August 2026 and the legacy Workbench sunsets 17 August. A migration checklist for developers.