Data & diagrams
ChainForge
Send the same prompt to several AI models and compare the answers side by side
★ 3.0k
June 2026
MIT
Data & diagrams
What we checked ourselves
Not copied from the project's own blurb. These are things we opened and verified, with the date.
- 9 Sept 2026We checked that the link to the project still resolves.
- 14 Aug 2026We read the licence text itself (LICENSE.md). No unusual restrictions were stated.
- 2 Sept 2026We read the project's own documentation and found no sign that development has stopped.
Where this sits among the 36 tools we list in Data & diagrams
- Works without using a terminal25 of 36
- Commercial use confirmed as allowed20 of 36
- Requires an API key21 that do not →
- Sends your input to the provider6 that do not →
Only 12 of the 36 meet all of the conditions above.
Counted from our own checks: every tool we list is examined against the same criteria.
What it does
Runs one prompt across multiple providers at once - ChatGPT, Claude, Gemini and others - and lays the responses out for comparison, including variations of the prompt itself, with scoring to help judge which performs best for your task. You supply the API keys and pay for the calls, which mount up faster than expected when every query fans out to several models, so start small. Everything you type goes to all configured providers.
Summary based on the project's own description. The Japanese page has a fuller beginner guide: setup difficulty, what to prepare, and a step-by-step start.
Screenshots & visuals
Before you start
- Setup difficultySome setup needed
- Command lineNot required
- API keyRequired
- Sends data onlineYes
Judged automatically from the project's own metadata. Always confirm on the official page.
ChainForge FAQ
- Is ChainForge free?
- ChainForge itself is free, but it needs an API key for an external AI service. That service charges separately, though some have a free tier.
- Do I need to install anything or write code to use ChainForge?
- You install it like a normal desktop app. No command line involved.
- Does ChainForge work on a phone?
- No. It needs a computer.
- Can I use ChainForge commercially?
- The licence is MIT, which permits commercial use. Conditions such as keeping the copyright notice still apply, so read the licence text before shipping it inside something.
How it compares
The conditions that decide whether you can actually use it, side by side.
| Tool | Command line | API key | Sends data out | Phone | Commercial use |
|---|---|---|---|---|---|
| ChainForge (this page) | Not needed | Required | Yes | No | Yes |
| mermaid | Not needed | Not needed | No | No | Yes |
| next-ai-draw-io | Not needed | Required | Yes | No | Yes |
| ml-visuals | Not needed | Not needed | Yes | No | Yes |
"Sends data out" means your input is uploaded to someone's server. Pick "No" when the material cannot leave your organisation.