PromptunerInstall Extension
Promptuner|AI Prompt Optimizer

Your AI is only as good as your Context

Stop wasting tokens on vague instructions. Promptuner runs inside your browser, scoring your prompts in real-time and compiling raw ideas into highly structured, persona-driven commands.

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10,000+
Active Engineers
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AI Prompt Optimizer for Every Platform

Works with ChatGPT, Claude, Gemini, Grok, Perplexity & DeepSeek

ChatGPT
Claude
Gemini
Grok
Perplexity
DeepSeek
// Core Engine

The AI Prompt Optimizer Built for Developers

Stop guessing what the AI wants. Let our extension analyze, score, and rebuild your context dynamically.

Live Quality Scoring

As you type, our algorithm evaluates your prompt's clarity and context depth in real-time, assigning a score out of 10.

1-Click Refactor

Score too low? Hit the magic button. Promptuner instantly refactors your vague idea into a token-optimized instruction set.

Smart Clarification

If missing critical context, the extension pops up to ask targeted questions, ensuring the final prompt is bulletproof.

// Real-time Evaluation

Stop guessing.
Know your prompt's strength.

Promptuner injects a live score meter directly into the ChatGPT and Claude interfaces. It analyzes word choice, constraints, and goal clarity on the fly.

  • Vague instruction detection
  • Persona constraint checking
  • Automatic token optimization hints
compiler_diagnostics.log Active Analysis
Context Density
WARN
Persona Definition
FAIL
Token Efficiency
PASS
42/100
Prompt is too vague. Clarification needed.
// Smart Interception

It asks questions,
so the AI doesn't have to.

When you try to submit a low-scoring prompt, Promptuner intercepts it. A sleek popup asks you the exact questions needed to fill the context gaps dynamically within the DOM.

PROMPTUNER_INTERCEPT
Score is 42/100. Let's fix that.
Q: What is the primary framework you are using?
> Next.js App Router with Tailwind CSS|
// Command Palette

Your prompt library,
always one shortcut away.

Save your best generated prompts locally. Hit Cmd+Shift+P anywhere on the web to pull up your command palette and inject templates instantly into any text box.

// Local Workspace
React Refactor Master
"You are a senior React developer..."
Inject
API Endpoint Doc Gen
"Create swagger documentation for..."
Marketing Copywriter
"Write an engaging landing page copy..."

Trusted by 10k+ Engineers

Read the logs from our active user base.

"The live scoring feature is a game changer. It trained me to stop writing lazy prompts. My API costs dropped because I get the right answer on the first try now."

AD
@alex_dev
Senior Full-Stack

"I used to maintain a Notion document full of prompt templates. Now I just use Promptuner's popup to refine my thoughts natively inside Claude. Flawless execution."

SM
@sarah_ml
AI Researcher

"Best $5/mo I spend. The DOM injection means it feels like a native feature of ChatGPT. The 'Enhance' button is basically magic."

JC
@josh_codes
Indie Hacker
// Knowledge Base

From the Blog

All posts →
// Plans

Transparent Pricing

Free

For casual prompt engineering.
$0/mo
  • 10 Enhancements per day
  • Basic Live Scoring
  • Local Prompt History
  • AI-Powered Follow-up Questions
  • Custom Templates
Install Free
RECOMMENDED

Pro

For professionals maximizing AI output.
$7.99/mo
Everything in Free, plus:
  • Unlimited Enhancements
  • Custom Personas & Templates
  • Advanced Scoring — Tone, Clarity & Intent
  • Synced Library Across Devices
  • Priority Support
Unlock Unlimited Usage

Stop Writing Bad AI Prompts

Join top-tier developers and professionals who stopped writing bad prompts.

Install the Extension

// Elevate your AI workflow today.