devtake.dev — Claude Opus 4.8Articles on devtake.dev covering Claude Opus 4.8.https://devtake.dev/en-usClaude Fable 5 is Anthropic's first public Mythos-class model. It tops SWE-Bench Pro at 80.3%.https://devtake.dev/article/claude-fable-5-launch/https://devtake.dev/article/claude-fable-5-launch/Claude Fable 5 hits 80.3% on SWE-Bench Pro and ships on Bedrock and Copilot at $10/$50 per million tokens, free on paid plans only through June 22.Tue, 09 Jun 2026 18:55:00 GMTaiai-modelsanthropicclaudeclaude-mythosbenchmarksllmagentic-codingdieter-morelliAnthropic is sending Mythos 5, the model it called too dangerous, to cyberdefenders and the US governmenthttps://devtake.dev/article/claude-mythos-5-cyberdefenders/https://devtake.dev/article/claude-mythos-5-cyberdefenders/Mythos 5 is the same model as Fable 5 with cyber safeguards lifted, going to Project Glasswing defenders and, Anthropic says, ~150 orgs across 15+ countries.Tue, 09 Jun 2026 18:40:00 GMTpolicyanthropicclaude-mythosproject-glasswingpolicynational-securityai-safetyai-securitycybersecurityclara-wexler