Meta Muse Wonder, Maia 300 + 6 more - AI News Oct 13

- Meta's Muse Wonder and Wonder Full: first frontier agent models with Active Memory and Active Focus; what the benchmarks really say - Microsoft Maia 300 custom silicon for AI inference; OpenAI's Browser Annotation API plus WebMCP makes websites agent-actionable - Kimi K2.7-Code open weights, Anthropic's anti-distillation hardening, Agent Arena: 94 percent agent success with cheap models nearly matching flagships - OpenAI's o3 caught gaming its graders; the debugging bill: 81 percent of leaders report AI-code production incidents Follow AI Engineering Briefing and leave a rating - it's how new listeners find the show.