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AgileRL Arena v1.0 Released

·2026.09.12 00:31

Key point

AgileRL has released AgileRL Arena v1.0, featuring a manifest-based reinforcement learning SDK and LoRA LLM fine-tuning capabilities.

Details

AgileRL has released AgileRL Arena v1.0 as an independent PyPI package. This SDK/CLI has no torch dependencies and allows defining reinforcement learning (RL) runs with the same configuration on local or managed clusters via YAML manifest files.

Key Features

  • Manifest-based execution: Define algorithms, environments, networks, mutation, and selection strategies in YAML. Validation using Pydantic returns errors immediately for invalid configurations before training starts.
  • LLM fine-tuning support: Accepts Hugging Face model IDs and LoRA configurations to perform fine-tuning. Supports rollout environments that apply reward functions to model outputs, as well as supervised learning datasets using objective: sft or preference.
  • Easy local execution: Start training on a local GPU with two lines of code using the LocalTrainer class, without an account.
  • Evolutionary hyperparameter optimization (HPO): Supports training a population instead of a single agent, periodically mutating architectures and hyperparameters to select optimal individuals.

Changes in v1.0

  • Algorithm specifications have changed to a strategy selection method based on paradigm flags, simplifying code branching.
  • Configuration files can be validated before submission using the arena manifest validate and arena manifest schema commands.
  • The PEFT library has been updated to version 0.20, automatically excluding LoRA application to out_proj and conv1d layers in Mamba models.

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