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Gemini CLI vs OpenAI Codex
Short answer: Both are CLI coding agents. We can't compare entry prices yet because Gemini CLI's paid price is not verified or not published. Both Gemini CLI and OpenAI Codex have a free plan.
| Gemini CLI | OpenAI Codex | |
|---|---|---|
| Type | CLI coding agents | CLI coding agents |
| Vendor | OpenAI | |
| Status | Active | Active |
| Free plan | Yes (Gemini API key free tier: 250 requests/day (per the Gemini CLI quota page). Google-login free access ended June 18, 2026.) | Yes (Codex is included in ChatGPT Free (quick coding tasks).) |
| Paid plans from | Free | $8/mo |
| Plans | Google account (free): Free · Google AI Pro: — · Google AI Ultra: — · Gemini API / Vertex AI pay-as-you-go: — | Free: Free · Go: $8 · Plus: $20 · Pro: $100 · Business: $25 · Enterprise & Edu: — |
| Open source | Not verified yet | Not verified yet |
| Editors named on vendor page | terminal/CLI | terminal/CLI |
| Features named on vendor page | debugging, MCP, refactoring | MCP, self-hosting, code review, code completion, security scanning, background/cloud agents, SSO/SAML |
| Model families named | Gemini | Claude, OpenAI GPT |
| Checked | Oct 26, 2026 | Oct 26, 2026 |
“Named on vendor page” means the phrase appears on the vendor's own page we captured; it is not a hands-on test. Unknown values are left blank rather than guessed.
FAQ
Is Gemini CLI cheaper than OpenAI Codex?
We can't compare entry prices yet because Gemini CLI's paid price is not verified or not published. Prices are from each vendor's pricing page.
Do Gemini CLI and OpenAI Codex have free plans?
Both Gemini CLI and OpenAI Codex have a free plan.
What is the difference between Gemini CLI and OpenAI Codex?
Both are CLI coding agents. Gemini CLI is made by Google; OpenAI Codex is made by OpenAI. See the table for plans, editors and features each vendor names.
Sources
- https://geminicli.com/docs/resources/quota-and-pricing/
- https://codeassist.google/
- https://developers.openai.com/codex/pricing