IBM Bob vs. Zot

Feature	IBM Bob	Zot

Tagline	Your AI SDLC (Software Development Lifecycle) partner from IBM	Yet another coding agent harness.
Website	https://bob.ibm.com	https://zot.sh
Language	javascript	go
Release Date	September 2, 2025	April 18, 2026
Last Updated	September 4, 2026	September 4, 2026
Provider Type	AI Lab	Independent
MCP Support	Yes	No
Multi-Agent Support	Yes	Yes
Git Integration	deep	low
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	Bob IDE	None
Hooks / Extensions	Yes	Yes
Web Search	Yes	Yes
Local Model Support	No	Yes
Context Window	Model-dependent	Model dependent
Supported Models	Multi-provider (IBM-managed)	Models from Anthropic, OpenAI, Kimi, DeepSeek, Google Gemini/Vertex, GitHub Copilot, Bedrock, Azure and 300+ models from OpenRouter.
Pricing Model	Freemium	Free
Free Tier	Yes	No
Price Range	Free / $20-200/mo	$0
Source Code Availability	Proprietary Software	Open Source (MIT)
Source Code	https://github.com/IBM/ibm-bob	https://github.com/patriceckhart/zot
Development State	active	active