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Version, Test, and Deploy Prompts at Scale
A centralised prompt library with version control, A/B testing, and collaborative tooling iterate on prompts without touching your codebase or redeploying your application.
The Prompt Workspace Your Whole Team Can Use
Move prompt iteration out of code and into a shared, versioned workspace where engineers, product managers, and data scientists can all contribute.
Version Control
Track every change to every prompt. Roll back to any prior version instantly full history with diff view and author attribution.
- Full version history
- One-click rollback
- Diff view between versions
- Author and timestamp tracking
A/B Testing
Split traffic between prompt versions or models and compare quality metrics in real time. Ship only what measurably improves outcomes.
- Traffic splitting by percentage
- Real-time quality comparison
- Promote winner with one click
- Model and prompt A/B tests
Collaborative Library
A shared workspace where engineers, product managers, and data scientists can collaborate on prompt development without merge conflicts.
- Role-based access control
- Comments and annotations
- Shared team workspace
- Organised by project
Template Variables
Use dynamic variables in prompts to personalise at runtime without managing prompt string interpolation in your application code.
- Named template variables
- Runtime variable injection
- Preview with test values
- Reuse across prompts
Performance Analytics
Track response quality, latency, and cost per prompt version to make data-driven decisions on what to deploy.
- Quality score per version
- Cost and latency per prompt
- Historical trend view
- Linked to eval pipeline
Framework Compatibility
Works natively with LangChain, LlamaIndex, and any OpenAI-compatible client zero integration friction.
- LangChain and LlamaIndex native
- OpenAI-compatible
- REST API for custom clients
- SDK support
Ship Better AI Without Waiting for Engineering Deployments
When prompts live in code, every change requires a deployment. Portkey's Prompt Library decouples prompt iteration from the release cycle so teams can experiment and improve continuously.
- Iterate prompts without a code deployment
- Full version history with one-click rollback
- A/B test prompts on real production traffic
- Shared workspace for cross-functional teams