fx (by Vercel) vs Junie CLI

Feature	fx (by Vercel)	Junie CLI

Tagline	Tiny, open, embeddable, native coding agent by Vercel.	An LLM-agnostic coding agent built for real-world development
Website	https://fx.sh	https://junie.jetbrains.com
Language	zig	shell
Release Date	August 17, 2026	July 15, 2025
Last Updated	August 19, 2026	June 3, 2026
Provider Type	Independent	Independent
MCP Support	Yes	Yes
Multi-Agent Support	No	Yes
Git Integration	basic	deep
Multi-File Editing	Yes	Yes
Auto Test Running	No	Yes
Sandbox / Permissions	Yes	No
Image / Multimodal Input	Yes	Yes
Voice Mode	No	No
IDE Integration	None - Terminal only	JetBrains IDEs
Hooks / Extensions	No	No
Web Search	Yes	Yes
Local Model Support	Yes	Yes
Context Window	Model-dependent	Model-dependent
Terminal Bench		#21 · 71.0% ±2.9 (Terminal-Bench 2.0) ²
Supported Models	All Vercel AI Gateway supported models, including OpenAI, Anthropic, Google, DeepSeek, z.AI, Moonshot, etc	Multi-provider including BYOK
Pricing Model	Free, BYOK, Usage Based	Freemium
Free Tier	No	Yes
Price Range	0 - $20 / mo / Custom (Vercel AI Gateway)	Free (BYOK) / $10-60/mo
Source Code Availability	Open Source (Apache-2.0)	Proprietary Software
Source Code	https://github.com/vercel-labs/fx	https://github.com/JetBrains/junie
Development State	active	active