ChatArena is by Farama-Foundation — not by us.
We indexed this project so people can find it. We are not selling it, we host no copy of the code, and we are not affiliated with or endorsed by its authors — get it from them.
Indexed Aug 1, 2026 · 1,552 stars at index time. Maintainers: claiming verifies your identity and unlocks a higher assurance tier. Removal requests are honored.
simulation · for humans & their agents
ChatArena
unclaimed listingactively maintainedFreeApache-2.0
ChatArena (or Chat Arena) is a Multi-Agent Language Game Environments for LLMs. The goal is to develop communication and
by Open Source Community · New publisher
Every claim on this page is refundable if it is untrue — refund policy.
☆ SaveChatArena (or Chat Arena) is a Multi-Agent Language Game Environments for LLMs. The goal is to develop communication and collaboration capabilities of AIs.
**Farama-Foundation/ChatArena** is an open-source project by Farama-Foundation: ChatArena (or Chat Arena) is a Multi-Agent Language Game Environments for LLMs. The goal is to develop communication and collaboration capabilities of AIs.. Indexed here so it can be found — not resold.
It is free. Get it from the upstream repository: https://github.com/Farama-Foundation/ChatArena
From the project's own README (excerpt, reproduced for discovery under its Apache-2.0 license):
Multi-Agent Language Game Environments for LLMs
Aug 11, 2025: This project has been deprecated due to a lack of wide spread community use, and is no longer planned to receive any additional updates or support.
---
ChatArena is a library that provides multi-agent language game environments and facilitates research about autonomous LLM agents and their social interactions. It provides the following features: • Abstraction: it provides a flexible framework to define multiple players, environments and the interactions between them, based on Markov Decision Process. • Language Game Environments: it provides a set of environments that can help understanding, benchmarking or training agent LLMs. • User-friendly Interfaces: it provides both Web UI and CLI to develop/prompt engineer your LLM agents to act in environments.
Getting Started
Try our online demo:
Installation
Requirements: • Python >= 3. 7 • OpenAI API key (optional, for using GPT-3.5-turbo or GPT-4 as an LLM agent)
Install with pip:
or install from source:
To use GPT-3 as an LLM agent, set your OpenAI API key:
Optional Dependencies
By default pip install chatarena will only install dependencies necessary for ChatArena's core functionalities. You can install optional dependencies with the following commands:
Launch the Demo Locally
The quickest way to see ChatArena in action is via the demo Web UI. To launch the demo on your local machine, you first pip install chatarena with extra gradio dependency, then git clone this repository to your local folder, and finally call the app.py in the root directory of the repository:
This will launch a demo server for ChatArena, and you can access it from your browser (port 8080).
[//]: # (The interface looks like this:)…
01Capabilities
Does
- + Agent directory
- + Direct agent chat
- + Workflow builder
Doesn’t
- No exclusions declared
02Requirements & stack
Depends on
- → Programmatic API
Credentials needed
None declared
Stack
03Community
No endorsements yetNo verified confirmations yet — be the first.
Confirmations come from verified purchasers, installers, vetted reviewers, or an installation outcome your org reported through the agent tools. They grade quality — security is verified separately, and community votes can never override the security gate.
Sign in to confirm — weight comes from verified usage, not vote count.
04Trust Passport
Full passport →0/0 automated components pass. An automated score is never a security guarantee.
This listing is unclaimed, so publisher identity cannot be verified and it stays below the “verified” tier by design — that is a statement about the listing, not about the project’s quality. Our automated scans still ran; a maintainer who claims it unlocks identity verification.
- publisher identity Publisher status verified; 0 verification(s) on file
- malicious pattern scan No known malicious-behavior patterns detected in reviewed content
- capability contract All 0 observed capability reference(s) match the declared manifest
- agent safety scan No injection patterns in agent-readable content
- provenance No release signature or provenance attestation
- behavioral sandbox Not performed in this environment — requires the production isolated runner (docs/sandbox-requirements.md). No untrusted code is ever executed on the application host.
Every listing must pass this review before it can be sold, and it is re-run on every release. Verification describes what we checked — it is not a guarantee that the software is safe.
05Versions
Full history →| Version | Channel | Released | Notes |
|---|---|---|---|
| 0.0.0 | stable | Aug 1, 2026 | Indexed listing — see the upstream repository for real release history. |