Gemini CLI vs OpenAI Codex (2026): Pricing, Features & Which to Choose

Who comes out ahead

Based only on the facts in our directory. The right pick still depends on the job you need done.

Lower starting price
Not comparable
Not comparable: Gemini CLI does not list a price
Free plan
Gemini CLI
Only Gemini CLI has one
Higher rating
OpenAI Codex
4.3 against 4.4
Same job?
Yes
Both are Coding tools

Side by side

Compared on	Gemini CLI	OpenAI Codex
Our rating	4.3	4.4Better
Starts at	Free	$20/mo
Free plan	YesBetter	No
Category	Coding	Coding
Plans	Free	From $20/mo
Key features	Open-source, terminal-native coding agent Built on Google's Gemini models Direct codebase, file, and shell access Generous free usage limits No subscription required to start	Cloud-based autonomous coding agent with sandboxed execution Codex CLI for local, terminal-based agent use Runs tests and returns a pull request for completed tasks IDE, terminal, and desktop app availability Distinct 2025 relaunch under a name last used for a different 2021 product
Pros	Free access with notably generous usage limits Open source, allowing inspection and extension Backed by Google's ongoing Gemini model development	Genuinely autonomous, sandbox-based task execution Backed by OpenAI's continued model development and rapid feature updates Available across cloud, CLI, IDE, and desktop surfaces
Cons	Newer product with a shorter track record than established terminal agents Free usage limits are still tied to a Google account and subject to change Less mature ecosystem of guides and community content so far	No free tier, requires a paid ChatGPT subscription or API access Name reuse from the original 2021 Codex can cause confusion when researching it Sandboxed cloud execution has less direct visibility than a live local session
Company	Google, founded 2025	OpenAI, founded 2021

Prices come from each vendor's pricing page, last checked 20260703. Check the vendor before you buy.

FAQ

Questions people ask

Is Gemini CLI better than OpenAI Codex?

In our reviews Gemini CLI scores 4.3 and OpenAI Codex scores 4.4. The better pick depends on the job. Gemini CLI: Google's free, open-source answer to terminal coding agents. OpenAI Codex: A 2025 relaunch of a 2021 name, now a fully autonomous agent.

Which is cheaper, Gemini CLI or OpenAI Codex?

Gemini CLI: free. OpenAI Codex: from $20/mo.

Do Gemini CLI and OpenAI Codex have free plans?

Only Gemini CLI has a free plan.

More comparisons

Gemini CLI compared with

All Gemini CLI alternatives

OpenAI Codex compared with

All OpenAI Codex alternatives