FundingTechCrunch · Oct 27, 2025
Sierra valued at $10B
Bret Taylor's Sierra raises at a $10B valuation on the strength of its enterprise agent platform — validation that vertical agents can carry massive enterprise valuations.
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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.
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.
FundingArcade · Jun 10, 2026
Arcade raises $60M Series A for agent authorization
Arcade.dev raises a $60M Series A for its agent authorization layer — OAuth-backed tool execution and credential management so agents act on users' behalf without god-mode access. 'What agents can do' joins execution and governance as a funded category of the harness stack.
FundingTemporal · Feb 20, 2026
Temporal raises $300M Series D at $5B valuation
Durable-execution leader Temporal closes a $300M Series D led by a16z at a $5B valuation, reporting 380% YoY revenue growth and 20M+ monthly installs. The agent-infra thesis in one round: in-memory agent state breaks in production, and durable execution is the production architecture.