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Simular's open-source Agent S4 evolves its own computer-use tools, lifting a 27B model past Opus 4.8

A meta-agent reads a task agent's trajectories and writes reusable interfaces (bulk spreadsheet edits, in-tab browser requests, app APIs), so Qwen3.8-27B hits 21.3% on OSWorld V2 versus 5.6% with fixed GUI tools and 20.6% for Claude Opus 4.8, at about $1.10 a task versus $72 (self-reported). Code is at simular-ai/Agent-S.

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Open WebUI 0.12.4 loads skills on demand, speaks MCP 2026-07-28 and ships unlisted security fixes

Released Oct 25, an opt in ENABLE SKILL LAZY LOADING setting lists selected skills for the model to load only when needed instead of sending every skill's instructions each message, and MCP connections now work with stateless 2026 07 28 servers. It also carries security fixes the team will detail after CVE assignment, so update soon, and note that saved tool server and Open Terminal connections now stop working unless an admin turns on ENABLE DIRECT INTEGRATIONS…

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