
Offers an integrated AI-native code editor experience rather than a standalone multi-agent orchestration control plane.
Offers an integrated AI-native code editor experience rather than a standalone multi-agent orchestration control plane.
Code Arena records 35,827,928 monthly visits with +19.4% month-over-month growth and Free pricing. T3 Code records 1,071,866 monthly visits with +52.5% growth and Free pricing.

Open-source control plane for orchestrating coding agents
| Dimension / Metric | ![]() | ![]() |
|---|---|---|
| Official Domain | arena.ai | t3.codes |
| Pricing Model | Free | Free |
| Monthly Visits | 35.83M (35,827,928) | 1.07M (1,071,866) |
| MoM Traffic Delta | +5.83M (+19.4%) | +369.11K (+52.5%) |
| Primary Market & Share | 🇮🇳 India (13.1%) | 🇺🇸 United States (35.8%) |
| Direct Visits / mo | 24.34M | 531.21K |
| User Rating | 4.7 | 4.7 |
| Supported Platforms | Website | Website |

Battle-test AI coding models side by side
Send the same coding prompt to multiple leading models and compare their generated apps and logic side by side.
Watch models construct web apps and websites live, so you can see process and output, not just the final file.
Projects go beyond one-off snippets, testing how well a model structures components, routes, and styles together.
Track which coding models accumulate the most wins over time to identify consistently strong performers.

Open-source control plane for orchestrating coding agents
Run Claude Code, Codex, Antigravity, OpenCode, Cursor and Grok sessions side by side in one workspace.
No resold tokens or quota caps — connect the credentials and plans you already pay for, and switch models mid-thread.
Manage branches, automate commits and pushes, and handle pull requests with inline diff review before accepting changes.
Open-source and MIT licensed, so you can run it on your own infrastructure and modify it for your team.

Offers an integrated AI-native code editor experience rather than a standalone multi-agent orchestration control plane.
Offers an integrated AI-native code editor experience rather than a standalone multi-agent orchestration control plane.

SpecialistWrite code with precision, hand bigger jobs to agents, and keep working from anywhere
SpecialistWrite code with precision, hand bigger jobs to agents, and keep working from anywhere
An agentic coding platform that ships real software

SpecialistThe coding agent that learns your coding taste
SpecialistThe coding agent that learns your coding taste
Free / Open-sourceRuns multiple CLI coding agents in parallel using git worktrees, offering a robust open-source multi-agent developer environment.
Free / Open-sourceRuns multiple CLI coding agents in parallel using git worktrees, offering a robust open-source multi-agent developer environment.

Crowdsourced arena where AI models compete and humans crown the best design output
Crowdsourced arena where AI models compete and humans crown the best design output

Agent Skills that give your coding agent real design taste
Agent Skills that give your coding agent real design taste
Free / Open-sourceSearch and study millions of public SKILL.md agent skills
Free / Open-sourceSearch and study millions of public SKILL.md agent skills

Free AI hackathons and a global community for AI builders
Free AI hackathons and a global community for AI builders
Orchestrates parallel AI agents to plan and ship code, though with a different UI and workflow setup.
Orchestrates parallel AI agents to plan and ship code, though with a different UI and workflow setup.
Community plugin, rule, and MCP server hub for Cursor
Community plugin, rule, and MCP server hub for Cursor
Acts as a collaborative control plane for local and cloud AI agents, sharing a strong multi-agent workflow focus.
Acts as a collaborative control plane for local and cloud AI agents, sharing a strong multi-agent workflow focus.