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Codex CLI vs Gemini CLI: catalog facts
Codex CLI	Gemini CLI
Freemium The CLI itself is free and open source, but using it requires a paid or quota-limited…	Freemium Free to use within Google's free tier limits; higher usage requires a paid Gemini plan.
Windows, macOS, Linux, Command line	Windows, macOS, Linux, Command line
Open source terminal client under the Apache license Integrates into existing workflows via CLI and IDE plugins	Open source client under the Apache license Includes a usable free tier without requiring a paid plan
Requires an OpenAI account or API access to function Usage limits depend on the access route chosen	Requires Google authentication and depends on Gemini's cloud models Free tier request limits may be restrictive for heavy use
Downloadable app	Downloadable app
Open source	Open source
License: Apache-2.0	License: Apache-2.0
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 22, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.