Temporal has closed a $300 million Series D financing round at a $5 billion valuation. The round was led by Andreessen Horowitz (a16z) and joined by Lightspeed Venture Partners and Sapphire Ventures. Existing investors Sequoia Capital, Index, Tiger, GIC, Madrona, and Amplify also participated, signaling continued confidence in the company’s direction.

The raise marks one of the larger funding rounds in infrastructure software this year. It puts Temporal in a strong position to scale its open-source platform and expand its managed cloud service as demand from enterprises building AI-powered applications continues to accelerate.

Why Agentic AI Keeps Stalling at the Pilot Stage

Most companies trying to deploy agentic AI systems run into the same wall: the underlying infrastructure simply wasn’t built for long-running, complex workflows. Agents fail mid-task. State gets lost. Errors go undetected. The result is that many promising AI projects never make it past early pilots.

Temporal addresses this directly. The company builds what it calls a “durable execution layer,” a platform that ensures AI workflows continue running correctly even when systems crash or behave unexpectedly. Rather than forcing developers to build custom recovery logic, Temporal handles failures automatically at the infrastructure level. This is the gap between a promising AI demo and a reliable AI product.

“Agentic AI doesn’t fail because the models aren’t good enough. 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.”

Samar Abbas, CEO and co-founder of Temporal

From Experimentation to Deployment

Companies using Temporal span a wide range of industries. OpenAI, Replit, and Lovable use the platform to build and operate agents at mass scale. Nordstrom relies on it to orchestrate complex infrastructure migrations. ADP uses Temporal to power human-in-the-loop processes that improve HR workflows. Healthcare company Abridge uses the platform to deliver ambient AI to more than 200 health systems, while the Washington Post uses it to run an AI pipeline that handles video scene detection at scale.

The numbers behind the platform reflect this broad adoption. Over the past year, Temporal reported more than 380% year-over-year revenue growth, a 350% increase in weekly active usage, and a 500% increase in installations. The platform now exceeds 20 million installs per month and has logged 9.1 trillion lifetime action executions on its Cloud product, with 1.86 trillion of those attributed to AI-native companies.

“Building for speed or reliability in agentic applications are often at odds with each other, but building with Temporal’s SDKs make it so they don’t have to be. Building with Temporal’s programming model dramatically increases our dev’s productivity and the Cloud platform ensures our systems are running reliably at scale. Our devs spend all their time on innovation instead of messy and undifferentiated infrastructure problems.”

Matt McDole, CTO of Yum! Brands (Taco Bell, KFC)

Built to Handle Real-World Pressure

The platform’s resilience has been tested under genuine stress. In one case, customers relying on Temporal’s high-availability architecture continued operating through major cloud outages without data loss or manual intervention. In another, the system handled sudden traffic spikes exceeding 150,000 actions per second with no advance notice, keeping agentic workflows running without interruption.

Temporal’s ecosystem now includes integrations with OpenAI, Pydantic, and Vercel, making it easier for teams to move from experimentation to production without rebuilding their architecture. Active R&D initiatives include Large Payload Storage, Task Queue Priority and Fairness, Execution History Branching, Durable Application Communication (known as Temporal Nexus), and Serverless Execution. Together, these reduce the operational burden of running AI at scale.

“Durable execution is a core requirement for modern AI systems, and Temporal offers a compelling platform to help build it in from the start. As AI systems become more complex and long-running, durability is as important as performance. Temporal plays a role in how we think about reliable execution at scale, supporting teams in focusing on product development.”

Venkat Venkataramani, VP of App Infrastructure at OpenAI

How the New Funding Will Be Used

The Series D capital will go toward expanding Temporal’s open-source community, growing its cloud platform, and deepening integrations with the broader AI ecosystem. The company is also investing in developer experience improvements that make the platform accessible to a wider range of engineers, from those building distributed backend systems to developers who prefer working at a higher level of abstraction.

Temporal’s long-term ambition is to become the default execution layer for AI applications in production. With demand rising fast and a clear technical differentiation in a market full of point solutions, the company is betting that reliability, not just speed, will define which AI infrastructure platforms win.

The Company Behind the Platform

Temporal was founded by Samar Abbas and Maxim Fateev, two engineers who previously built similar durable execution infrastructure at Uber and Amazon. The company launched its open-source project in 2019 and has since grown it into one of the most widely used workflow orchestration platforms in the software industry. Temporal is headquartered in San Francisco.

The platform supports multiple programming languages, allowing teams to build workflows in the language they already use. This flexibility has made Temporal popular across both established enterprises and fast-moving startups. Its managed service, Temporal Cloud, is backed by the same team that built the open-source project.

Block, the fintech company, uses Temporal to build agentic frameworks that accelerate developer productivity. Financial services, media, healthcare, and retail are among the sectors now running production workloads on the platform, a sign that durable execution has become a broad infrastructure need, not a niche one.

Investors Backing the Round

The Series D was led by Andreessen Horowitz (a16z), one of Silicon Valley’s most prominent venture firms, alongside Lightspeed Venture Partners and Sapphire Ventures. The round also saw strong participation from existing investors including Sequoia Capital, Index, Tiger Global, GIC, Madrona, and Amplify Partners. Their continued involvement reflects confidence in Temporal’s growth trajectory and the size of the market it is addressing.

Temporal has now raised a substantial total in venture funding since its founding. The company’s previous rounds established its open-source infrastructure and early cloud offerings; this latest raise is designed to support the next phase of scaling, both technically and commercially.

Origianl Creator: Ekaterina Pisareva
Original Link: https://justainews.com/companies/funding-news/temporal-raises-300m-series-d-at-5b-valuation/
Originally Posted: Wed, 18 Feb 2026 05:17:58 +0000