Agentastic vs Codex
Codex is OpenAI's CLI coding agent. Agentastic is the workspace around it — and around Claude Code, Gemini, Cursor CLI, and 25+ others. If you only run one Codex session at a time, Codex on its own is enough. If you want to run several in parallel and review their diffs side by side, that's what Agentastic is for.
Who should choose each option
Agentastic
Choose Agentastic when you want to run several Codex (or mixed) agents in parallel with a graphical diff and review UI.
Codex
Choose Codex on its own when one terminal session is enough.
Feature comparison
| Agentastic | Codex | |
|---|---|---|
| What it is | Multi-agent workspace | Single CLI agent |
| Codex support | First-class | Native |
| Other agents | 30+ | Codex only |
| Worktree isolation | Yes | Manual |
| Diff + review UI | Yes | Terminal output |
| Cost | Free (BYO OpenAI key) | OpenAI usage |
Pricing
Agentastic
Free. BYO OpenAI / Anthropic / Google credentials.
Codex
OpenAI API or ChatGPT plan with Codex access.
Using them together
Run Codex as one of the agents in an Agentastic worktree. Compare it side by side with a Claude Code or Gemini worktree on the same task.
Frequently asked questions
Can I A/B Codex against Claude Code in Agentastic?
Yes — that's a common workflow. Spawn two worktrees on the same branch, one with Codex and one with Claude Code, and compare diffs.
Does Agentastic resell OpenAI usage?
No. You authenticate with OpenAI directly and Agentastic just hosts the Codex CLI process.
See also
Agentastic vs Claude Code
Compare Agentastic and Claude Code. Claude Code is Anthropic's CLI agent. Agentastic is a native macOS workspa…
Agentastic vs Cursor
Compare Agentastic and Cursor. Agentastic runs 30+ coding agents in parallel git worktrees on macOS. Cursor is…
Agentastic vs Conductor
Compare Agentastic and Conductor. Both run multiple Claude Code agents in parallel on macOS. Agentastic ships …