Temporal raises $300M, hits $5B valuation as Seattle-based infrastructure startup rides AI wave
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 growing wave of AI agents moving into real-world production.
The latest round, led by Andreessen Horowitz, doubles the company’s value since October.
Temporal builds open-source software and cloud services that help companies run long-term, complex workflows with reliability — what it calls “firm operations.” The Bellevue, Wash.-based company says that as AI systems become more autonomous and take action across multiple services, reliability has become a challenge.
“Agent AI doesn’t fail because the models aren’t good enough,” said Samar Abbas, CEO and co-founder of Temporal, in a press release. “It fails because the systems around them can’t handle the actual execution.”
Temporal says revenue has grown more than 380% year-over-year, weekly spend is up 350%, and installs are up 500%. Its cloud platform has processed the execution of 9.1 million lifetime actions, including 1.86 trillion in native AI companies.
OpenAI uses Temporal to help power certain production processes. Other clients include ADP, Yum! Brands, and Block. Andreessen Horowitz described Temporal as the fundamental execution layer of the AI era.
“For long-term agents working in extended environments, the robustness Temporal provides is the difference between a compelling demo and a production system,” the Silicon Valley firm wrote in a blog post. “The execution layer has become a central part of the emerging AI agent stack.”
Temporal initially focused on helping developers manage complex, distributed workflows. But the rise of AI agents has increased the need for an infrastructure that can safely operate long-running, resilient systems over the long term. The Temporal platform preserves the state of the application, automatically retries failed steps, and allows the workflow to resume where it left off instead of starting over.
Interim 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 as CEO from Fateev in 2024. Fateev is now the CTO.
Temporal has raised $650 million to date. It closed a $105 million secondary sale in October, and raised a $146 million Series C in early 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, as well as existing investors including Sequoia Capital, Index, Tiger, GIC, Madrona, and Amplifaya.
