fx (by Vercel) vs. VT Code

Feature	fx (by Vercel)	VT Code

Tagline	Tiny, open, embeddable, native coding agent by Vercel.	Semantic AI coding agent with LLM-native code understanding
Website	https://fx.sh	https://github.com/vinhnx/vtcode
Language	zig	rust
Release Date	August 17, 2026	September 12, 2025
Last Updated	August 19, 2026	June 28, 2026
Provider Type	Independent	Independent
MCP Support	Yes	Yes
Multi-Agent Support	No	Yes
Git Integration	minimal	basic
Multi-File Editing	Yes	Yes
Auto Test Running	No	No
Sandbox / Permissions	Yes	Yes
Image / Multimodal Input	Yes	Yes
Voice Mode	No	No
IDE Integration		VS Code, Zed, Cursor, Windsurf
Hooks / Extensions	No	Yes
Web Search	Yes	Yes
Local Model Support	Yes	Yes
Context Window	Model dependent	Model-dependent; auto-summarization
Supported Models	All Vercel AI Gateway supported models, including OpenAI, Anthropic, Google, DeepSeek, z.AI, Moonshot, etc	API compatible models for OpenAI, Anthropic, Google, xAI, DeepSeek, Z.AI, Ollama, LM Studio and 400+ models on OpenRouter
Supported Subscriptions	—	GitHub Copilot ChatGPT
Pricing Model	Free, BYOK, Usage Based	BYOK
Free Tier	No	Yes
Price Range	0 - $20 / mo / Custom (Vercel AI Gateway)	Free (BYOK)
Source Code Availability	Open Source (Apache-2.0)	Open Source (MIT)
Source Code	https://github.com/vercel-labs/fx	https://github.com/vinhnx/vtcode
Development State	active	active