Rate limit reached when i setup Gemini

How to fix this issue.
↳ workdir: ~/Downloads/Dev/codex │
│ ↳ model: gemini-2.5-pro-preview-03-25 │
│ ↳ approval: suggest
codex
⚠️ Rate limit reached. Error details: Status: 429, Code: unknown, Type:
unknown, Message: 429 status code (no body). Please try again later.

You reached your account quota - either you can get higher tier (are you on free)? Or reduce the usage. Or switch to model with higher limits.