Prompt Evaluator
Scores a prompt on clarity, specificity, context and structure, then rewrites it to do the same work in fewer tokens.
Bring your own model keysWrite better prompts.
Write better prompts.
Get better results.
Use fewer tokens.
A practice platform for prompt engineering. Evaluate and rewrite prompts, inspect what they cost across models, and work through a curriculum built around the topic you pick — all running on your own provider account.
No credit card required Keys encrypted at restInference billed by your provider, never resold
promptcoach / evaluate
ExampleYour prompt
write an email to my manager about leaving early today
Clarity42/100
Tokens68 used
The evaluator returns a rewrite, the issues it found, and what each model would charge for it.
6
Model providers supported
4
Scoring dimensions per prompt
0%
Markup on inference
BYOK
Your keys, your billing
Complete feature suite
Everything in one workspace
One platform in place of five: evaluator, cost studio, curriculum, community library and competition arena.
Token & Cost Studio
Inspect BPE tokenization, find filler phrasing, and project per-request cost across every model you have connected.
Model Comparison
Run one prompt across every provider you have connected and compare output, latency and cost side by side.
Academy Tracks
Name a topic and get a curriculum generated for it, with an interactive sandbox and quiz on every lesson.
Competitions
Hosted prompt-engineering challenges with live standings. Results and winners are set by the organiser.
Prompt Library
Publish prompts that worked, fork what others have shared, and vote on the ones worth keeping.
Certificates
Finish a track or place in a competition, then request a certificate. Each one is reviewed before it is issued.
Progress Tracking
Skill averages and score trends built from prompts you actually evaluated, not sample data.
Workflow
Three steps to your first evaluation
01
Connect a provider key
Add your own OpenAI, Anthropic, Gemini, Groq, DeepSeek or Mistral key. It is encrypted before storage and never shown again.
02
Write and evaluate
Submit a prompt and get scored feedback plus a rewrite, produced by the model you chose and billed to your own account.
03
Practise and measure
Work through generated lessons, enter competitions, and watch your scores move as your prompts improve.
Pricing
Simple, transparent pricing
Model usage is always billed directly by your provider. PromptCoach never resells inference.
Free tier
Get started freeStarter
₹0/forever
- Prompt evaluator and rewriter
- Token and cost studio
- Model comparison across your keys
- Academy tracks and competitions
- Community prompt library
Pro tierComing Soon
PromptCoach Pro
Coming Soon
- Everything in Starter
- Priority certificate review
- Extended evaluation history
- Email support
🔒 Features unlocking soon
Ready to level up your prompts?
Create an account, connect a provider key, and run your first evaluation in a couple of minutes.
Create free accountNo credit card · No lock-in · Instant access