Custom Environments
Companies you can hire to build custom RL environments: bespoke, production-grade environments developed from your own data, tools, and workflows. This is where to look if you want to outsource RL environment development, need fast turnaround on custom agent evals and benchmarks, or want environments tailored to a specific product rather than off-the-shelf tasks.
6 startups
| Name | Domains | Location | Team | Funding | Raising |
|---|---|---|---|---|---|
| AIChamp Custom enterprise-workflow RL environments with expert grading | Enterprise, Long Horizon, Custom Environments | San Francisco | 1-10 | - | - |
| Applied Compute Ex-OpenAI trio applying RL to build specialist enterprise models | Enterprise, Machine Learning, Custom Environments | San Francisco | 11-25 | $80M total at $700M valuation (Oct 2025) | Yes |
| HUD Evals and RL environments platform for computer-use agents | Computer Use, Coding, Long Horizon, Agents Infrastructure, Custom Environments | San Francisco, Singapore | 11-25 | $15M raised (YC W25, Exceptional Capital) | - |
| Rise Data Labs US-based expert human data and custom RL environments for enterprise AI | Computer Use, Coding, Finance, Cybersecurity, Legal, Data Labeling, Enterprise, Multi-Domain, RLHF, Custom Environments | United States | - | - | Yes |
| Veris AI High-fidelity simulated environments to train enterprise AI agents | Enterprise, Custom Environments, Simulation | New York | 1-10 | Seed, $8.5M (Decibel and Acrew, June 2025) | - |
| Vmax Converts proprietary data into RL environments | Machine Learning, Custom Environments | San Francisco, New York | 1-10 | - | - |