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AI Agents Break Rules Under Everyday Pressure

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Show HN: Cancer diagnosis makes for an interesting RL environment for LLMs

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OpenAI at QCon AI NYC: Fine Tuning the Enterprise

At QCon AI NYC 2025, Will Hang from OpenAI unveiled Agent RFT—a cutting-edge reinforcement fine-tuning approach for tool-using agents. By optimizing prompts and tasks before model adjustments, Hang showcased effective strategies to enhance decision-making and efficiency, emphasizing a balanced grading system. The session revealed a future where smarter agents reduce latency and improve outcomes. By Andrew Hoblitzell

[Week 4] Making Your Agent Smarter: 3 Designs That Beat Common Limits

[D] RL interviews at frontier labs, any tips?

[R] New "Illusion" Paper Just Dropped For Long Horizon Agents

Interesting take on how to use Agents to unlock alternate gameplay styles

[P] I Trained an AI to play Donkey Kong Country Stop and Go Station

Anyone else feel like the hardest part of agents is just getting them to do stuff reliably?

[P] Training environment for PS2 game RL

AI researcher Andrej Karpathy says he's "bearish on reinforcement learning" for LLM training

[P] Training environment for RL of PS2 and other OpenGL games

RL ReSearch

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DR-Tulu-8B

Xiaomi MiMo

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MiMo-7B-RL

DLR-RM

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stable-baselines3

PyTorch version of Stable Baselines, reliable implementations of reinforcement learning algorithms.

vwxyzjn

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cleanrl

High-quality single file implementation of Deep Reinforcement Learning algorithms with research-friendly features (PPO, DQN, C51, DDPG, TD3, SAC, PPG)

facebookresearch

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habitat-lab

A modular high-level library to train embodied AI agents across a variety of tasks and environments.

microsoft

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qlib

Qlib is an AI-oriented Quant investment platform that aims to use AI tech to empower Quant Research, from exploring ideas to implementing productions. Qlib supports diverse ML modeling paradigms, including supervised learning, market dynamics modeling, and RL, and is now equipped with https://github.com/microsoft/RD-Agent to automate R&D process.

google-deepmind

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mujoco

Multi-Joint dynamics with Contact. A general purpose physics simulator.

Farama-Foundation

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Gymnasium

An API standard for single-agent reinforcement learning environments, with popular reference environments and related utilities (formerly Gym)