PromptStack

What's your prompt stack?

The prompt management, playground, and studio platform for teams building AI products. Build, compare, and optimize prompts across all major AI providers.

MANAGEMENT | PLAYGROUND | STUDIO
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PromptStack: Prompt Management, Playground, and Studio for AI

PromptStack is a prompt management workspace where you build, compare, and optimize prompts across all major AI providers and models. Create reusable prompt stacks with pinned instructions, structured context, and saved experiments.

Run side-by-side comparisons, review responses with consensus judges, and keep prompts portable across providers. Organize work with libraries, galleries, glossaries, and todo tracking so teams can find, share, and iterate quickly.

Unlike prompt libraries or marketplaces alone, PromptStack combines a visual builder, multi-model playground, and workflow tools like optimizer, reviewer, and comparer so you can reliably repeat stronger prompt patterns. Learn the definition in the PromptStack glossary or browse the full glossary page.

See how a prompt stack works →

The PromptStack Ecosystem

PromptBuilder

Canvas-based prompt authoring with pinned instructions, context management, and role-aware templates.

Pinned instructions Context slots Live preview

PromptComparer

Side-by-side prompt comparison across versions, models, and configurations.

Version diff Model comparison A/B testing

PromptConsensus

Multi-model consensus engine with AI judges for aggregated insights and validation.

AI judges Agreement scores Evidence export

PromptGallery

Visual prompt library for browsing, discovering, and organizing prompt patterns.

Card browsing Focus mode Quick copy

PromptLibrary

Centralized repository for prompts, response types, and research materials.

Advanced filtering Collections Inline preview

PromptModels

Provider-agnostic model runner supporting OpenAI, Anthropic, Google, and more.

Multi-provider Cost tracking Performance metrics

PromptOptimizer

AI-powered prompt optimization with suggestions and quality analysis.

AI rewrites Quality metrics Variation testing

PromptToDos

Task management system with ROI tracking and prompt integration.

ROI scoring Priority management Prompt integration

Frequently Asked Questions

What is PromptStack?
PromptStack is a prompt management and playground platform for teams building AI products. It provides tools for building, comparing, and optimizing prompts across multiple AI providers.
Is this the same as promptstacks.com or promptstack.dev?
No. PromptStack (.co) is a product for designing, testing, and managing prompts. The other sites are a community and an open-source library respectively.
What do you mean by a "prompt stack"?
A prompt stack is the structured set of system messages, skills, context, evaluation prompts, and models you use to ship a feature. PromptStack lets you build and version that stack.
Do I need an account to try it?
You can preview the stacks and explore features; sign in to save your prompts and gain access to advanced features and workflow tools.

Learn More About Prompt Engineering

The Tech Stack for Your Prompts Prompt Engineering Guide Prompts as Code NLP & Prompting Glossary About PromptStack