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HUD

Platform and marketplace for building, buying and running RL environments

Platform or hubComputer useCoding and SWETool use

HUD sells an MIT-licensed SDK for building environments, hosted training and evaluation, QA agents that look for grader errors, and DataVendor, a marketplace where labs buy environments and tasks from third parties. It hosts OSWorld-Verified and has released SheetBench-50 and Assemble Bench. It is the only vendor here that publishes a usage price.

Best for: Self-serve teams that want published pricing and an open SDK

$16M Series A (Jun 2026)

  • – Bespoke builds
  • ✓ Platform or hub
  • ✓ Open source
  • ✓ $0.10 per env-hour
Visit HUD

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

1 Legal nameHuman Union Data, Inc.
2 HeadquartersSan Francisco, CA
3 Founded2025
4 Team24 (YC profile)
5 DeliveryPlatform or hub, Open source, Managed RL training
6 ExclusivityNot disclosed
7 Customers and partnersSays 50+ businesses use the platform; names no frontier-lab customer.
8 Published pricesSDK and platform free; Cloud $0.10 per environment-hour; Enterprise custom; $100 academic credits

Where we recommend them

Worth knowing before you sign

  • Homepage claims SOC 2 compliant infrastructure but no report or trust centre is published
  • Marketplace environments come from third parties and need buyer-side QA
  • Usage and marketplace metrics are self-reported

Go to HUD's site

Sources

  1. HUD homepage
  2. Series A announcement
  3. Y Combinator profile
  4. rl-list profile
  5. hud SDK on GitHub
  6. pavlovslist directory

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

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