AcquisitionCognition · Jul 14, 2025
Cognition acquires the Windsurf agentic IDE
After Google licensed key Windsurf talent, Cognition (maker of Devin) acquires the Windsurf product and brand — consolidating two of the biggest names in agentic coding.
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CommunityarXiv · Sep 22, 2026
First 'Harness Engineering' survey lands on arXiv
'Harness Engineering: Anatomy, Architecture, and Evolution of Coding Agents' surveys the field — loops, tool interfaces, context management, memory and recovery — giving the emerging discipline its first comprehensive academic map.
Open SourceGitHub · Jul 14, 2026
xAI open-sources Grok Build, its coding agent harness
xAI open-sources Grok Build — a Rust coding agent harness and fullscreen TUI around Grok models — unusually early for a first-party tool. It joins Claude Code, Codex and Gemini CLI as the fourth major first-party harness, now with a fourth open one.
Open SourceOpenAI · Feb 26, 2026
OpenAI open-sources Symphony, its codex orchestration harness
OpenAI releases Symphony — open-source orchestration that turns project work into isolated, autonomous coding-agent implementation runs and surfaces the ones that pass, so teams manage outcomes instead of supervising sessions. Big Tech keeps raising the floor on what counts as a baseline harness.
LaunchGoogle · Nov 18, 2025
Google launches Gemini 3 and the Antigravity agentic IDE
Gemini 3 debuts with state-of-the-art agentic coding benchmarks, alongside Antigravity — a browser-based agentic development environment where agents plan, edit and execute tasks across editor and browser surfaces.