Engineer Prompts
That Actually Work
Create, optimize, test, and deploy production-grade AI prompts. Get consistently better outputs from GPT-4, Claude, Gemini & more — in one unified workspace.
Works with all major AI models
Trusted by fast-moving AI teams
Everything you need to master prompts
From writing your first prompt to running production-scale LLM workflows — PromptOS covers every step of the prompt engineering lifecycle.
AI Prompt Optimizer
Automatically improve your prompts with AI. Get clearer, more specific, and higher-performing prompts in seconds.
Multi-LLM Testing
Test prompts on GPT-4, Claude, Gemini, and Mistral simultaneously. Compare outputs side-by-side.
Version Control
Track changes, compare versions, and roll back any prompt to a previous state.
Business Collaboration
Share prompts, review changes, and collaborate in business workspaces. Advanced user management stays on Enterprise.
Template Library
100+ battle-tested prompt templates. Start fast with proven patterns for every use case.
Analytics & Insights
Track prompt performance, token usage, and identify what works best across different models.
From idea to perfect prompt in minutes
Three simple steps. No prompt engineering PhD required.
Write your prompt
Use our rich editor to craft your prompt. Start from scratch or pick from 100+ ready-made templates for chat, completion, code, and more.
Let AI optimize it
Our AI analyzes your prompt and suggests improvements — adding clarity, reducing ambiguity, and structuring it for maximum model performance.
Test, iterate & deploy
Run your prompt against multiple models, review results side-by-side, save winning versions with one click, and deploy to your stack via API.
See the transformation
Paste any prompt. PromptOS restructures it in seconds — clearer intent, richer context, better outputs.
// Original prompt
Write a summary of this article.
// Optimized prompt
You are a professional editor. Summarize the following article in 3–5 sentences, focusing on the key insights and main conclusion. Output in plain text, no bullet points.
Interactive pipeline — drag to explore
What gets better, every time
- Clearer intent — model understands the goal
- Structured output — consistent JSON / markdown
- Context-aware — fewer hallucinations
- Token efficient — 30% fewer tokens on average
Loved by AI engineers
“PromptOS completely changed how our team handles AI development. The optimization feature alone saved us dozens of hours. Our GPT-4 prompts went from mediocre to genuinely impressive.”
Simple, transparent pricing
Start free. Upgrade when you need more power.
Click a plan card to bring it to the front.
For trying PromptOS with a solo workspace.
- 50 optimizations per month
- Original content up to 500 words
- 1 workspace
- 1 member
- Bring your own LLM credentials
- Core prompt editor and testing
- Basic templates and version history
For serious solo users who need higher limits and stronger workflows.
- 200 optimizations per month
- Original content up to 1,000 words
- 1 workspace, 1 member
- Bring your own LLM credentials
- Prompt export
- Variable multi-test
- Richer templates
For power individual users who want the highest solo limits.
- 1,000 optimizations per month
- Original content up to 2,000 words
- 1 workspace, 1 member
- Bring your own LLM credentials
- Advanced optimization modes
- Prompt delete + workspace export
- Early access to solo features
For collaborative workspaces that share prompts and review together.
- 2,000 optimizations per month
- Unlimited original content length
- Up to 10 members, 5 workspaces
- Advanced optimizer, exports, and prompt delete
- Role-based member management
- Shared prompt collaboration
- Comments and collaboration
- Shared workspace activity
- Team billing
- API access (coming soon)
For organizations that need user management, RBAC, and governance.
- Everything in Teams
- Unlimited optimizations
- Unlimited original content length
- Unlimited team members
- Advanced optimizer, exports, and collaboration controls
- API access (coming soon)
- User management and RBAC
- SSO and advanced access controls
- Audit and governance features
- Dedicated support
- Custom deployment options
Individual plans start free · Business plans are available for teams and enterprise
Ready to engineer better prompts?
Join hundreds of AI engineers and teams already building with PromptOS. No credit card required.
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