FundingTechCrunch · Sep 15, 2025
Cognition valued at $10.2B
Cognition raises a round valuing the Devin maker above $10B — among the highest valuations for a pure agentic-harness company.
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FundingBusiness Wire · Sep 30, 2026
Restate raises $20M Series A for agent infrastructure
Restate raises $20M to 'define the infrastructure layer for AI agents and workflows' — its lightweight durable runtime journals every agent step so invocations survive crashes. The round underlines durable execution as the best-funded sub-category of agent infrastructure.
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.
FundingThe Agent Report · Jul 16, 2026
Runta raises $20M seed to 'parent' AI agents
a16z leads a $20M seed into Runta at a $100M+ valuation for its agent execution layer — sandboxes, spending caps and audit trails that treat agents like children who need supervision. Martin Casado called it 'core systems software rebuilt for agents'; the round came after prompt-injection containment failures made agent governance urgent.
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.