Which is more popular, Agent Lightning or LlamaGym?

Agent Lightning has more GitHub stars (18,539 vs 1,253).

Which is more actively developed, Agent Lightning or LlamaGym?

Agent Lightning had more commits in the last 90 days (56 vs 0).

Should I use Agent Lightning or LlamaGym?

Compare their capabilities, limitations and "best for" notes above. Both are open source, so trying each on a small task is the fastest way to decide.

Agent Lightning vs LlamaGym

Side-by-side comparison of two AI agent tools

Agent Lightningopen-source

The absolute trainer to light up AI agents.

LlamaGymopen-source

Fine-tune LLM agents with online reinforcement learning

Metrics

	Agent Lightning	LlamaGym
Stars	18.5k	1.3k
Star velocity /mo	1.5k	0.6417112299465241
Commits (90d)	56	0
Releases (6m)	3	0
Overall score	0.6873154649928275	0.15217558163609235

Pros

+Drastically reduces boilerplate code needed to integrate LLMs with RL environments, handling complex aspects like conversation context and reward assignment automatically
+Simple API requiring only 3 abstract method implementations makes it accessible to both RL researchers and LLM practitioners
+Compatible with standard Gym environments and popular ML frameworks like Transformers, enabling easy integration into existing workflows

Cons

-Relatively small community and ecosystem compared to more established RL or LLM frameworks
-Limited to Gym-style environments, which may not cover all potential use cases for RL-based LLM training
-Requires solid understanding of both reinforcement learning concepts and LLM fine-tuning, creating a steep learning curve for newcomers

Use Cases

•Training LLM agents to play games like Blackjack, where the agent learns optimal strategies through trial and error
•Fine-tuning language models for sequential decision-making tasks in business or research contexts
•Academic research combining reinforcement learning with large language models to study emergent behaviors and learning patterns

View Agent Lightning Details View LlamaGym Details

FAQ

Which is more popular, Agent Lightning or LlamaGym?: Agent Lightning has more GitHub stars (18,539 vs 1,253).
Which is more actively developed, Agent Lightning or LlamaGym?: Agent Lightning had more commits in the last 90 days (56 vs 0).
Should I use Agent Lightning or LlamaGym?: Compare their capabilities, limitations and "best for" notes above. Both are open source, so trying each on a small task is the fastest way to decide.