Codex CLI alternative

An open-source alternative to OpenAI Codex CLI (2026)

In short: The Codex CLI ties you to OpenAI. agentty runs against OpenAI too — plus Claude, Groq, OpenRouter, Cerebras, and local Ollama — from a single native binary with a sandbox by default.

If you like the Codex CLI's terminal workflow but want to use more than one provider and an open-source codebase, agentty is the alternative to try.

Why look for a Codex CLI alternative

  • You don't want to be locked to a single provider.
  • You want an open-source agent you can read and self-host.
  • You want a native binary with millisecond startup instead of a Node runtime.

How agentty compares

  • Provider-agnostic — OpenAI, Claude Pro/Max, Groq, OpenRouter, Cerebras, or local Ollama.
  • Single static binary — 16.7 MB, ~3 ms cold start.
  • Sandboxed by default; one-command SSH air-gap.
  • Retrieval built in so only relevant code is sent to the model.
  • Open source (MIT), MCP-capable, runs in Zed over ACP.

Install in one line

curl -fsSL https://agentty.org/install.sh | sh

Install in one line — a single static binary, no Node or Python.

curl -fsSL https://agentty.org/install.sh | sh
Get startedStar on GitHub →