Knit
Multi-model prompt playground for building, testing, and versioning prompts with function-call simulation.
What it does
Knit (promptknit.com) is a browser-based AI prompt playground supporting GPT-4o, Claude 3 Opus, Gemini, and other models. It offers separate editors for image, conversation/function-call, and one-shot text prompts, plus project-based organization, version history, and code export for developers.
Core features
Three specialized prompt editors (image, conversation, text)
Function-call schema editor with simulated returns
Multi-model support (OpenAI, Claude, Azure OpenAI)
Inline prompt variables with side-by-side comparisons
Version history for every edit
Project-based access control for teams
One-click code export for app integration
Best for
→Prototyping and testing prompts before shipping to production
→Simulating function-calling behavior for AI agents
→Comparing model outputs across providers
→Sharing prompt projects with collaborators
Pricing
Plus
$7/month
Pro
$21/month
Reviews
Big-picture takes: what it's for and whether it delivers. High-engagement YouTube videos — not sponsored.
Tutorials
Step-by-step: exactly how to get things done with it.