Charm Crush vs. fx (by Vercel)

Feature	Charm Crush	fx (by Vercel)

Tagline	Glamourous agentic coding for all	Tiny, open, embeddable, native coding agent by Vercel.
Website	https://charm.sh	https://fx.sh
Language	go	zig
Release Date	July 29, 2025	August 17, 2026
Last Updated	June 29, 2026	August 19, 2026
Provider Type	Independent	Independent
MCP Support	Yes	Yes
Multi-Agent Support	Yes	No
Git Integration	deep	minimal
Multi-File Editing	Yes	Yes
Auto Test Running	Yes	No
Sandbox / Permissions	Yes	Yes
Image / Multimodal Input	Yes	Yes
Voice Mode	No	No
IDE Integration	None - terminal only
Hooks / Extensions	Yes	No
Web Search	Yes	Yes
Local Model Support	Yes	Yes
Context Window	Model-dependent	Model dependent
Supported Models	All Crush-compatible models via Charm Hyper from Anthropic, OpenAI, Deepseek, Gemini, Groq, etc.	All Vercel AI Gateway supported models, including OpenAI, Anthropic, Google, DeepSeek, z.AI, Moonshot, etc
Pricing Model	BYOK	Free, BYOK, Usage Based
Free Tier	Yes	No
Price Range	Free (BYOK), $0 - $20 / month	0 - $20 / mo / Custom (Vercel AI Gateway)
Source Code Availability	Open Source (FSL-1.1-MIT)	Open Source (Apache-2.0)
Source Code	https://github.com/charmbracelet/crush	https://github.com/vercel-labs/fx
Development State	active	active