What is Open Interpreter used for?

Open Interpreter is an open-source coding agent in Rust, forked from OpenAI's Codex, tuned to get good results from low-cost open models such as Kimi, GLM and Qwen. It is a good fit for running a coding agent on low-cost models and swapping in for the Codex CLI.

Is Open Interpreter open source?

Yes. Open Interpreter is open source under the Apache-2.0 licence. Its source code is on GitHub at openinterpreter/openinterpreter and is written mainly in Rust.

Is Open Interpreter free?

Yes. Open Interpreter is open source, so the software itself is free to use.

What is Open Interpreter an alternative to?

Open Interpreter is an open-source alternative to Claude Code, Cursor, Manus and Google Antigravity. Other open-source alternatives to Claude Code include Cline, Aider and Codex CLI.

Is Open Interpreter actively maintained?

Yes. The most recent commit to Open Interpreter was on 11 October 2026. The project has 69k stars on GitHub.

Open Interpreter: open-source alternative to Claude Code

About Open Interpreter

Open Interpreter is a coding agent aimed at open and low-cost models. It is a fork of OpenAI's Codex CLI, written mainly in Rust with some Python, and released under the Apache-2.0 license. After installing on macOS, Linux or Windows, you start a session by typing interpreter, or i, in your terminal.

Its distinguishing idea is harness emulation: it reproduces the agent harness that suits a given model and lets you switch the active harness with a slash command. A recent update reimplemented the Kimi Code harness in Rust for Kimi K3 while keeping a Codex-like interface. Its topics also mention DeepSeek and Qwen models.

Open Interpreter works in editors and clients that support ACP and speaks the same Codex exec protocol, so projects using the Codex SDK can switch with a one-line binary override. It aims to be portable, reusing shared standards such as AGENTS.md, .agents/skills directories, MCP and ACP, and keeps user data in readable files. It suits developers who want a terminal coding agent for cheaper models.

Key features

Terminal coding agent for open, low-cost models
Switchable agent harness emulation
Codex-compatible exec protocol and SDK override
ACP support for compatible editors
Reuses AGENTS.md, skills directories and MCP
Interpreter Workstation client for desktop, browser or headless use

Good fit for

Running a coding agent on low-cost models
Swapping in for the Codex CLI

Built with: Rust tools; Python tools
Tags: coding-agent; open-models; rust; cli; acp; mcp; ai-coding; codex

Open Interpreter: questions and answers

What is Open Interpreter used for?: Open Interpreter is an open-source coding agent in Rust, forked from OpenAI's Codex, tuned to get good results from low-cost open models such as Kimi, GLM and Qwen. It is a good fit for running a coding agent on low-cost models and swapping in for the Codex CLI.
Is Open Interpreter open source?: Yes. Open Interpreter is open source under the Apache-2.0 licence. Its source code is on GitHub at openinterpreter/openinterpreter and is written mainly in Rust.
Is Open Interpreter free?: Yes. Open Interpreter is open source, so the software itself is free to use.
What is Open Interpreter an alternative to?: Open Interpreter is an open-source alternative to Claude Code, Cursor, Manus and Google Antigravity. Other open-source alternatives to Claude Code include Cline, Aider and Codex CLI.
Is Open Interpreter actively maintained?: Yes. The most recent commit to Open Interpreter was on 11 October 2026. The project has 69k stars on GitHub.