fx (by Vercel) vs. Gemini CLI

Feature	fx (by Vercel)	Gemini CLI

Tagline	Tiny, open, embeddable, native coding agent by Vercel.	An open-source AI agent that brings Gemini into your terminal
Website	https://fx.sh	https://geminicli.com
Language	zig	typescript
Release Date	August 17, 2026	June 24, 2025
Last Updated	August 19, 2026	June 29, 2026
Provider Type	Independent	AI Lab
MCP Support	Yes	Yes
Multi-Agent Support	No	Yes
Git Integration	minimal	deep
Multi-File Editing	Yes	Yes
Auto Test Running	No	Yes
Sandbox / Permissions	Yes	Yes
Image / Multimodal Input	Yes	Yes
Voice Mode	No	Yes
IDE Integration		Antigravity, VS Code, JetBrains IDEs (ACP), Zed (ACP)
Hooks / Extensions	No	Yes
Web Search	Yes	Yes
Local Model Support	Yes	Yes
Context Window	Model dependent	1M tokens
Terminal Bench 2.0		#42 · 61.4% ±4.1 ²
Supported Models	All Vercel AI Gateway supported models, including OpenAI, Anthropic, Google, DeepSeek, z.AI, Moonshot, etc	Gemini 3.5 Flash, Gemini 3.1 Pro
Pricing Model	Free, BYOK, Usage Based	Free
Free Tier	No	Yes
Price Range	0 - $20 / mo / Custom (Vercel AI Gateway)	Free (1,000 req/day)
Source Code Availability	Open Source (Apache-2.0)	Open Source (Apache-2.0)
Source Code	https://github.com/vercel-labs/fx	https://github.com/google-gemini/gemini-cli
Development State	active	active