T3 Code
#42 in Coding AgentsUnknown · 2× · last seen Aug 01, 2026
T3 Code is an Open Source GUI (desktop, web, and mobile) that controls existing coding agents like Codex, Claude Code, Cursor, OpenCode, and Grok Build through their own CLI credentials and consolidates them in a unified interface. The project comes from Theo Browne (t3.gg) and the Ping Labs team and was released in March 2026; the source code is available under MIT license on GitHub (pingdotgg/t3code). T3 Code does not provide its own AI model, but instead functions as an orchestration and control layer ("agent harness control surface") with features such as thread management, Git worktree isolation, diff viewer, and automated pull-request workflow. Users pay exclusively for their existing subscriptions/API access to the respective providers (OpenAI, Anthropic, Cursor, etc.).
Features
| Base Model | No proprietary model; controls external agents/CLIs such as Codex (OpenAI), Claude Code (Anthropic), Cursor, OpenCode, and Grok Build |
| License | MIT license (open source) |
| Platform | Web, Desktop (Electron: Windows, macOS, Linux) and Mobile (iOS, Android) |
| Price | Free, open source (MIT license); no fees from T3 Code itself, only the underlying provider's costs (bring-your-own-subscription/API key) |
| Release Date | March 6, 2026 (official public launch) |
| Interface (IDE/CLI/Web) | Graphical interface (web, desktop, mobile) as a front-end for CLI agents; no built-in code editor |
| Supported Languages | Language-agnostic – supports whatever languages the connected agents (Codex, Claude Code, Cursor, OpenCode, Grok Build) can handle |