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Mercor

Expert network that now owns Deeptune’s enterprise-app gyms

Data majorApp replicasCoding and SWEDomain expertsTool use

Mercor supplies the expert layer of RL environments, with domain experts writing tasks and verifiers, and since buying Deeptune in July 2026 it also owns software that recreates hundreds of enterprise apps. It bought Sepal AI in February 2026, publishes the APEX benchmark family and open-sourced the Archipelago harness under Apache-2.0. It sits on the OpenEnv technical committee.

Best for: Buyers who want expert-written tasks on top of enterprise app replicas from one vendor

$350M Series C at $10B (Oct 2025)

  • ✓ Bespoke builds
  • – Platform or hub
  • ✓ Open source
  • – Publishes prices
Visit Mercor

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

1 Legal nameMercor.io Corporation
2 HeadquartersSan Francisco, CA
3 Founded2023
4 TeamNot disclosed; claims 5M+ experts in its network
5 DeliveryBespoke builds, Open source
6 ExclusivityNot disclosed
7 Customers and partnersWas a Deeptune customer before buying it; TechCrunch reported that Meta paused work with Mercor after its March 2026 breach.
8 Published pricesNot disclosed

Where we recommend them

Worth knowing before you sign

  • Security breach disclosed March 2026, tied to the LiteLLM supply-chain compromise; breach class actions followed
  • Misclassification suit White v. Mercor (N.D. Tex., May 2026)
  • Defendant in Scale AI’s trade-secret suit; Mercor denies wrongdoing
  • A ~$20B round has been reported, not confirmed by the company

Go to Mercor's site

Sources

  1. Mercor: Deeptune acquisition
  2. Orrick: Sepal AI acquisition
  3. rl-list profile
  4. TechCrunch: $350M Series C
  5. Fortune: Deeptune deal
  6. TechCrunch: breach
  7. TechCrunch: lawsuits and Meta pause
  8. Law360: White v. Mercor
  9. TechCrunch: Scale v. Mercor
  10. PYMNTS: $20B round talks
  11. Epoch AI: RL environments FAQ
  12. pavlovslist directory

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

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