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Temporal raises $550M at $12.55B valuation

Temporal raises $550M at $12.55B valuation

Money Moves

Open-source durable execution platform doubles its February valuation as AI agents drive demand

Today: Temporal announces $550M Series E

Overview

Updated 53 minutes ago

Temporal, the open-source platform that keeps long-running software from failing partway through, raised $550 million in a Series E round. The deal values the company at $12.55 billion, more than double its February valuation of $5 billion.

The platform handled 1.9 trillion billable actions in August for customers including OpenAI, Snap, and JPMorgan Chase. Annual revenue run rate passed $250 million, up more than 200% year over year. The bet: as AI agents run for days or weeks, the reliability layer underneath them becomes as critical as the models themselves.

Why it matters

An AI agent that crashes mid-task loses user trust. Temporal builds the layer that prevents that, now priced at $12.55 billion.

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Key Indicators

$12.55B
Valuation after Series E
Up from $5 billion post-money in February 2026.
$550M
Series E round size
Led by Lightspeed, with Wellington, Goldman Sachs Alternatives, and Tiger Global as co-leads.
$250M+
Annualized revenue run rate
Surpassed $250 million, growing more than 200% year over year.
1.9 trillion
Billable actions in August 2026
Up more than 350% year over year on Temporal Cloud.
4,300+
Paying customers
Includes OpenAI, Snap, NVIDIA, Netflix, and JPMorgan Chase.
200%
Net dollar retention
Existing customers spend more than twice prior-year amounts; held above 200% since February.

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People Involved

Organizations Involved

Timeline

2017 September 2026

5 events Latest: Today
Tap a bar to jump to that date
  1. Temporal announces $550M Series E

    Today Funding

    Temporal announces $550M Series E at $12.55B valuation, led by Lightspeed.

  2. Bloomberg reports $500M round talks

    Funding

    Bloomberg reports Temporal in talks for $500M round at $12B pre-money valuation.

  3. Temporal raises $300M Series D

    Funding

    Temporal raises $300M Series D at $5B valuation, led by Andreessen Horowitz.

  4. Temporal founded

    Origins

    Fateev and Abbas leave Uber and found Temporal as an independent open-source company.

  5. Uber open-sources Cadence

    Origins

    Uber open-sources Cadence, the durable workflow engine Fateev and Abbas built.

Scenarios

1

Temporal files for IPO

Possible Resolves by End of 2027

Discussed by: Investor commentary in Bloomberg and The Next Web coverage of the round

The Series E brings in late-stage institutions like Wellington and T. Rowe Price, the kind of investors who typically back companies nearing a public listing. With revenue growing 200% year over year and net dollar retention above 200%, an offering would let early backers cash out. If growth holds through 2027, an S-1 filing is plausible.

2

Cloud giants bundle durable execution, squeezing Temporal

Possible Resolves by Q1 2028

Discussed by: The Next Web, which noted Cloudflare, Vercel, and Restate launched competing workflow products in 2025-2026

AWS Step Functions, Cloudflare Workflows, and Vercel's durable workflows all target the same developer market, bundling orchestration into platforms developers already use. If those products take share, Temporal's 200% growth could slow. A down round or significant layoffs would signal real pressure.

3

Temporal crosses the $1 billion revenue mark

Possible Resolves by End of 2028

Discussed by: The company's stated growth trajectory in its own announcements

At 200% year-over-year growth, a $250 million run rate could reach $1 billion within three years. The company's 4,300 paying customers and net dollar retention above 200% mean existing customers spend twice as much each year. If that holds, the $12.55 billion valuation starts looking conservative.

Historical Context

3 moments from history that rhyme with this story — and how they unfolded.

2012

Amazon Simple Workflow Service (2012)

Amazon launched Simple Workflow Service (SWF), a managed service that lets developers orchestrate multi-step application tasks that can run for months. Samar Abbas joined the team that brought SWF to the public in 2012, and Maxim Fateev went on to lead it.

Then

SWF proved durable, long-running orchestration could operate at cloud scale.

Now

Amazon later layered AWS Step Functions on the same concept, making durable execution a standard cloud capability.

Why this matters now

It is the institutional ancestor of Temporal. The same engineers who built SWF went on to create Temporal.

2017

Uber's Cadence (2017)

Uber open-sourced Cadence, a workflow engine Fateev and Abbas built to handle payments, dispatch, and other systems. Within three years it grew past 100 internal use cases.

Then

Cadence proved durable execution worked at ride-hailing scale.

Now

The project seeded Temporal, which the founders launched independently in 2019.

Why this matters now

Today's funding is the direct continuation of an idea proven inside Uber first.

June 2021

Confluent IPO (2021)

Confluent, founded by the creators of the open-source Apache Kafka, went public in June 2021. It had built a managed cloud version of Kafka and raised hundreds of millions in private funding before listing.

Then

The IPO valued Confluent near $9 billion, cashing out early investors.

Now

It showed open-source infrastructure, founded by the people who created the technology, could produce durable public companies.

Why this matters now

Temporal follows the same playbook, and its Series E valuation suggests investors expect a comparable or larger exit.

Sources

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