IBM Bob vs. Vix

Feature	IBM Bob	Vix

Tagline	Your AI SDLC (Software Development Lifecycle) partner from IBM	Sleek, Fast and Token Efficient AI Coding Agent
Website	https://bob.ibm.com	https://getvix.dev
Language	javascript	go
Release Date	September 2, 2025	June 1, 2026
Last Updated	May 20, 2026	June 4, 2026
Provider Type	AI Lab	Independent
MCP Support	Yes	Yes
Multi-Agent Support	Yes	Yes
Git Integration	deep	shallow
Multi-File Editing	Yes	No
Auto Test Running	Yes	No
Sandbox / Permissions	Yes	Yes
Image / Multimodal Input	Yes	Yes
Voice Mode	No	No
IDE Integration	Bob IDE	N/A
Hooks / Extensions	Yes	Yes
Web Search	Yes	Yes
Local Model Support	No	No
Context Window	Model-dependent	Model Dependent
Terminal Bench 2.0		#1 · 90.0% ±2.1 ²
Supported Models	Multi-provider (IBM-managed)	Anthropic Models (Opus 4.8 / 4.7 / 4.6), OpenAI (GPT-5.1 / o3 / 4o), MiniMax, Xiaomin MiMo and 300+ Models on OpenRouter.
Pricing Model	Freemium	$0
Free Tier	Yes	No
Price Range	Free / $20-200/mo	$0
Source Code Availability	Proprietary Software	Open Source (AGPL-3.0)
Source Code	https://github.com/IBM/ibm-bob	https://github.com/kirby88/vix
Development State	active	active