Atropos
Open-source framework and environment hub for reinforcement-learning environments.
Open AI lab behind the Atropos RL environments framework
Nous Research is an open-source AI lab known for the Hermes model family and Atropos, its open rollout framework for LLM reinforcement learning environments spanning code execution, tool calling, and multimodal tasks. It also builds Psyche for distributed training.
Atropos open-source RL environments framework
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| Website | nousresearch.com |
|---|---|
| Domains | Machine Learning, Environment Platforms |
| Location | New York |
| Team size | 11-25 |
| Founded | 2023 |
| Funding | Series A, $50M led by Paradigm (~$1B valuation, 2025) |
| Founders | Karan Malhotra @karan4d, Jeffrey Quesnelle @theemozilla, Teknium @Teknium1 |
Focus areas and technical capabilities are shown separately. Missing technical evidence remains Unknown.
Unknown. No source-backed catalog capability record is available yet.
Products and services supported by official company materials. Reviewed 2026-08-16.
Open-source framework and environment hub for reinforcement-learning environments.
Verified public artifacts and documented private commercial inventory.
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Also listed under Machine Learning, Environment Platforms.
| Name | Domains | Type / catalog | Location | Team | Funding | Raising |
|---|---|---|---|---|---|---|
| Rise Data Labs RL environments and tasks across multiple domains, supported by a large expert network | Computer Use, Coding, Finance, Cybersecurity, Legal, Data Labeling, Enterprise, Multi-Domain, RLHF, Custom Environments | Data + environments 3 artifacts | New York, United States | 11-25 | - | Unknown |
| Applied Compute Ex-OpenAI trio applying RL to build specialist enterprise models | Enterprise, Machine Learning, Custom Environments | Pure-play commercial Catalog unknown | San Francisco | 11-25 | $80M total at $700M valuation (Oct 2025) | Yes |
| Artificial Analysis Independent benchmarking of AI models across intelligence, speed, and price | Multi-Domain, Machine Learning | Pure-play commercial Catalog unknown | San Francisco | 11-25 | $2.6M (2024) | Unknown |
| Bespoke Labs Data curation and RL environment recipes from ex-Google DeepMind researchers | Coding, Machine Learning | Pure-play commercial Catalog unknown | Mountain View, Menlo Park, Bangalore, San Francisco | 11-25 | ~$40M (reported) | Unknown |
| Collinear Enterprise simulation, judges, and long-horizon trajectory generation | Enterprise, Long Horizon, Machine Learning, Simulation | Pure-play commercial Catalog unknown | Mountain View, Sunnyvale | 11-25 | - | Unknown |
| Diffuse Labs ML and long-horizon RL environments | Machine Learning, Long Horizon | Pure-play commercial Catalog unknown | Palo Alto, San Francisco | 1-10 | - | Unknown |