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Prime Intellect

Runs the Environments Hub, open-source RL tooling and hosted RL training

Platform or hubCoding and SWETool useReasoningComputer use

Prime Intellect hosts the Environments Hub, which it says holds 2,500+ community environments, and maintains the open-source verifiers library and the prime-rl trainer. It also sells hosted RL, sandboxes, inference and GPU compute, and runs environment bounties from $100 to $5k+. It sits on the OpenEnv technical committee, and Epoch AI names it as the hub and bounty player in the market.

Best for: Teams that want a large open catalog plus a training stack they can run themselves or hosted

$130M Series A (Jul 2026); $150M+ total

  • – Bespoke builds
  • ✓ Platform or hub
  • ✓ Open source
  • ✓ GPU prices only
Visit Prime Intellect

Facts checked November 9, 2026 against the sources listed below. Prime Intellect does not pay to appear here.

1 Legal namePrime Intellect
2 HeadquartersSan Francisco, CA
3 Founded2023
4 Team11–50 (LinkedIn band); about 30 open roles
5 DeliveryPlatform or hub, Open source, Managed RL training
6 ExclusivityNot disclosed
7 Customers and partnersTechCrunch names Ramp, Zapier and Flapping Airplanes as customers; Ramp trained a 35B model on its platform.
8 Published pricesGPUs listed hourly (H100 from $3.50/hr); Environments Hub and hosted RL plan prices not published

Where we recommend them

Worth knowing before you sign

  • Hub environments are community-contributed and vary in quality
  • Disclosed an "offline" sandbox escape affecting eval stacks (Aug 2026)
  • Revenue ($100M+ annualized) and 6,000+ customer figures are self-reported
  • The $1B valuation comes from TechCrunch; the company has not stated it

Go to Prime Intellect's site

Sources

  1. Prime Intellect homepage
  2. Series A announcement
  3. TechCrunch: $130M Series A
  4. PR Newswire: $5.5M seed (2024)
  5. $15M round post (2025)
  6. Environment bounties program
  7. Prime Intellect blog
  8. rl-list profile
  9. Epoch AI: RL environments FAQ
  10. OpenEnv governance

Work at Prime Intellect? Send corrections with a source to editors@toprlenvironments.com. We fix verified errors within five business days.

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