Temporal Raises $550M Series E at $12.55B Valuation as AI Agent Demand Surges

Quick Facts

• Temporal closed a $550M Series E on Sept. 14, 2026, valuing the company at $12.55B — more than double its $5B valuation from February 2026.
• Annualized revenue has surpassed $250M, growing more than 200% year-over-year, with net dollar retention exceeding 200% since February.
• Lightspeed led the round, with co-leads from Wellington Management, Goldman Sachs Alternatives Growth Equity, and Tiger Global.

Temporal Technologies closed a $550 million Series E round on Sept. 14, 2026, at a valuation of $12.55 billion. The round is among the largest venture capital investments in the Pacific Northwest this year.

Lightspeed led the deal. Wellington Management, Growth Equity at Goldman Sachs Alternatives, and Tiger Global co-led. T. Rowe Price and SV Angel also participated. Returning investors include a16z, Sequoia, Index, GIC, Sapphire Ventures, and Amplify.

What Temporal Builds

Temporal makes open-source software and a cloud service built around what it calls durable execution. When an application starts a task, Temporal logs its progress step by step. If the app crashes mid-task, it can restart from where it left off once the system recovers.

That capability has become critical for AI agents, which often span multiple tools, services, and approval steps. Preserving state across failures is a core operational problem in production agent deployments, and Temporal targets that gap directly.

Growth Numbers

Temporal’s annualized revenue run rate recently passed $250 million, up more than 200% year-over-year. Net dollar retention has exceeded 200% since February 2026, a figure that signals strong expansion within its existing customer base.

Temporal Cloud processed more than 1.9 trillion actions in August, a 350% increase year-over-year. Open-source installs surpassed 43 million in August, up 134% since January 2026. The company now counts more than 4,300 paying customers.

Who Uses It

Temporal’s customer list includes OpenAI, NVIDIA, Netflix, Snap, and JPMorgan Chase. Stripe uses the platform to power financial workflows that require exactly-once execution and complete audit trails. OpenAI has integrated durable execution directly into its Agents SDK, so agents built on that platform carry Temporal’s reliability guarantees into production.

Other users include Anysphere, the company behind the Cursor coding tool, as well as Salesforce, Shopify, Block, Scale AI, and DoorDash.

Valuation Trajectory

Temporal’s valuation has moved fast. The company raised a $146 million Series C in March 2025 at a $1.72 billion valuation. By February 2026, a $300 million Series D put it at $5 billion. The new $12.55 billion figure represents more than a sevenfold increase in roughly 18 months.

The company plans to use the capital to expand global operations. Its team has doubled to 570 employees over the past year.

What Investors Said

Anoushka Vaswani, a partner at Lightspeed, said most AI teams hit the same wall between demo and production, because the systems around the models cannot handle real-world execution. She described Temporal as an open, pluggable foundation that is becoming critical infrastructure for the agentic era.

CEO Samar Abbas said that as agents take on more work across more systems, each additional step creates another place to fail. He said durable execution is becoming the standard for reliable applications at scale.

Read more: Software reliability specialist Temporal valued at $12.55B in $550M round