Crucible
Multiple vendors
Models from different labs with different blind spots: what one misses, another catches.
Adversarial analysis with multiple models
Put your idea in front of a panel that is not trying to please you.
Crucible brings together AIs from different vendors to defend, attack, fact-check and redo your idea, article, text or image. You choose the models, the roles and the rules.
Try it with Google Free with open models. No card.
How it works
Write or paste
An idea, a question, an article, a text or an image.
Build the panel
Pick roles (steelman, skeptic, red team…), a model for each, and the rules: rounds, turns and order.
Watch them clash
The agents debate live. At the end, a summary with the verdict and a report with every perspective.
Built to take ideas apart
Predefined roles
Steelman, skeptic, devil's advocate, red team, fact-checker, pragmatist, ethicist, rewriter and moderator. Or write your own.
You set the rules
How many rounds, how many times each agent speaks, in what order, in series or in parallel.
Summary and report
A summarizer closes the debate and, if you want, a Markdown report covers each perspective.
A panel with character
SteelmanSkepticDevil's advocateRed teamFact-checkerPragmatistEthicistRewriterModerator
Frequently asked questions
How much does it cost?
Nothing with OpenRouter's free models, which are refreshed daily. If you connect your own OpenRouter account you can use paid models and set a spend limit per analysis and per month.
Which models are used?
Whatever OpenRouter offers for free today, from several vendors. The list renews itself every day. You decide which model plays each role.
Can I use my own OpenRouter account?
Yes. It connects through OpenRouter's authorization flow, with no pasted keys. We store the key encrypted and you can disconnect whenever you like.
Are my texts private?
Only you see your analyses. To run them we send the text to the models through OpenRouter, and some free models may log requests. Do not paste secrets or other people’s personal data.
Can I use it from another agent or tool?
Yes, through an MCP server. You request access in your settings and, once the administrator approves it, you create a token so your agent can analyze ideas for you.