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The ultimate guide to multi-harness RL
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Train open models with RL inside real agent harnesses
AI & ML interests
Open RL Environments at Scale
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SmolDataEnvs Multi-harness | SETA Whitebox
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Answer dataset questions and view scoring results
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SmolDataEnvs Multi-harness | Harbor
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Explore and manage tasks in the Harbor agentic environment
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SmolDataEnvs Multi-harness | Native OpenCode
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Run OpenCode tasks and view grading results
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MiMo RL Environment Explorer
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Explore the MiMo-V2.6 RL environments and run rollouts
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Wordle NeMo Gym
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RL
Watercolour Environment Server
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Explore a watercolour painting environment with text
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LaTeX OCR Env
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Transcribe images to LaTeX and receive accuracy score
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Agents
SmolDataEnv RL
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Visualize RL agent comparison metrics in a web dashboard
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Agents
SmolDataEnv SFT
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Visualize SFT experiment metrics from a JSON file
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Agents
SmolDataEnvs train logs
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GRPO training logs for Qwen3.5 on SmolDataEnvs
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RL
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FineEnvs
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Nayana Multilingual OCR
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Extract text, layout, or answer questions from documents
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FLEURS Multilingual ASR
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Transcribe multilingual audio and get instant scoring
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Agents
LaTeX OCR Training
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Cross-model RL training, evaluation, and run history
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Featured
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How to turn a game into an RL environment
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From an idea to a trained 4B, with the dead ends left in
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Agents
GeoGuesser GRPO
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Display interactive tracking data visualization
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Agents
Geoguesser Grpo V2 Trackio
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Show real-time I/O activity dashboard
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Watercolour Gallery
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Every painting of every run, with the sketch that made it
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Agents
Geoguesser Grpo Trackio
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Display interactive visualization of tracking data
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MCP
RL
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Geoguesser Environment
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Interact with a GeoGuessr‑style environment through custom actions
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Agents
Watercolour Trackio Hps Only
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Show interactive tracking dashboard for your tasks
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Watercolour HPSv3
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Agents
Watercolour Trackio Judge Led
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Show an interactive tracking dashboard