Temporal, an open-source platform powering what it says are the world’s most reliable agentic applications, this week announced a $300 million Series D financing, giving the company a $5 billion valuation.
Temporal Technologies Inc. is a fully remote company, but it considers the Seattle area its home base, with about 62 of its 375 employees located in the area, including Bellevue, where the business is registered. It was founded in 2019.
Andreessen Horowitz led the latest funding round and was joined by Lightspeed Venture Partners and Sapphire Ventures, with participation from insiders Sequoia Capital, Index, Tiger, GIC, Madrona, and Amplify, according to a news release from Temporal.
The funding comes a year after Temporal raised $146 million in first quarter 2025. Then in October, it announced a secondary transaction of $105 million valuing the company at $2.5 billion.
Temporal said that as companies race to adopt agentic AI, most efforts stall at the pilot stage, something that Temporal said it’s changing.
By providing a durable execution layer for long-running, stateful AI systems, Temporal enables companies across every sector to turn agentic AI from a promising idea into a production reality by addressing the gap between experimentation and adoption, the company’s release said.
“Agentic AI doesn’t fail because the models aren’t good enough,” Samar Abbas, CEO and co-founder of Temporal, said in the release. “It fails because the systems around them can’t handle real-world execution. And rather than create new problems, agentic AI tends to expose old ones such as managing state and failures. We’ve been solving these same problems for years. Temporal exists to make agentic AI work in production as well as any other class of application, reliably, predictably, and at scale.”
Demand for Temporal’s open-source platform and cloud service has surged over the past year as companies move beyond AI prototypes toward mission-critical deployments, the company said. Temporal reported more than 380% year-over-year revenue growth, a 350% increase in weekly active usage, and a 500% increase in installations, now exceeding 20 million installs per month and 9.1 trillion lifetime action executions on its cloud product alone, 1.86 trillion for AI-native companies.
Abbas co-founded Temporal with Maxim Fateev, chief technology officer. Before Temporal, Abbas worked as a software engineer at Uber, Microsoft, and AWS. Fateev also worked most recently as a software engineer at Uber, with earlier roles at Google, AWS, Microsoft, Amazon, and Quintessent, according to their company and LinkedIn profiles.
With the new funding, Temporal will continue investing in open source, expanding its cloud platform, and enabling companies everywhere to move agentic AI out of the lab and into the real world.
Temporal said it’s changing how modern software is built through its open-source Durable Execution platform. By guaranteeing the execution of workflows even in the face of system failures, Temporal allows developers to focus entirely on business logic instead of developer plumbing for process crashes, infrastructure, and dependency failures — increasing developer velocity. Its capabilities allow seamless orchestration across multiple programming languages, making it ideal for both traditional enterprise applications and next-generation AI workloads, it says. Temporal Cloud, the company’s managed service backed by the originators of the project, has been adopted by thousands of leading enterprises.