Temporal has raised $300 million in a Series D funding round at a $5 billion valuation, positioning the company as a key infrastructure provider for the emerging wave of AI agents moving into real-world production.
The latest round, led by Andreessen Horowitz, doubles the company’s valuation from October.
Temporal builds open-source software and a cloud service that helps companies run long-running, complex workflows reliably — what it calls “durable execution.” The Bellevue, Wash.-based company says that as AI systems become more autonomous and take actions across multiple services, reliability has become a challenge.
“Agentic AI doesn’t fail because the models aren’t good enough,” Samar Abbas, CEO and co-founder of Temporal, said in a press release. “It fails because the systems around them can’t handle real-world execution.”
Temporal says revenue grew more than 380% year-over-year, weekly active usage increased 350%, and installations rose 500%. Its cloud platform has processed 9.1 trillion lifetime action executions, including 1.86 trillion for AI-native companies.
OpenAI uses Temporal to help power certain production workflows. Other customers include ADP, Yum! Brands, and Block. Andreessen Horowitz described Temporal as becoming a foundational execution layer for the AI era.
“For long-running agents operating over extended horizons, the durability that Temporal provides is the difference between a compelling demo and a production system,” the Silicon Valley firm wrote in a blog post. “The underlying execution layer has become a central piece of the emerging AI agent stack.”
Temporal originally focused on helping developers manage complex, distributed workflows. But the rise of AI agents has amplified the need for infrastructure that can safely execute long-running, stateful systems over extended periods. Temporal’s platform preserves application state, automatically retries failed steps, and allows workflows to resume exactly where they left off instead of starting over.
Temporal co-founders Samar Abbas and Maxim Fateev previously worked together at Uber and helped build an internal open-source orchestration engine called Cadence. The experience helped inspire them to launch Temporal in 2019. Fateev previously worked at Amazon, Microsoft, and Google. Abbas also worked at Microsoft and Amazon.
Abbas took over CEO duties from Fateev in 2024. Fateev is now CTO.
Temporal has raised $650 million to date. It closed a $105 million secondary transaction in October, and raised $146 million Series C round earlier in 2025. The company employs 375 people.
Temporal also announced Tuesday that Raghu Raghuram, former VMware CEO and general partner at Andreessen Horowitz, is joining the company as a board observer.
Other backers in the latest round include Lightspeed Venture Partners and Sapphire Ventures, along with existing investors including Sequoia Capital, Index, Tiger, GIC, Madrona, and Amplify.
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