A+PromptGrade
Grade Prompt
A+
Early Access · Free to try

Grammarly
for LLMs.

Grade, debug, and optimize AI prompts before they ship. Catch hallucination risks in seconds.

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No account needed · Results in under 10 seconds

PromptGrade Analyzer
“Write product descriptions for our online store based on category and target audience”
48/100
Clarity32
Structure45
Efficiency61
Needs WorkHigh Hallucination Risk

Issues Detected

No output format defined
Missing refusal instruction
Audience is undefined
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Calibrated forGPT-4oClaude 3.5Gemini 2.0GPT-4.1LangChain

Everything to ship reliable AI

Stop guessing. Start measuring.

5-Dimension Scoring

Every prompt graded on token efficiency, instruction clarity, structure quality, hallucination safety, and cost efficiency.

Auto-Optimization

One click rewrites your prompt — fixing every issue and adding proper structure, constraints, and output format.

Chrome Extension

Grade prompts in ChatGPT as you type. Inline feedback — no copy-pasting. Like Grammarly, but for AI.

How it works

01

Paste your prompt

Drop any prompt — system instructions, user messages, or both.

02

Get a reliability report

Instant score, hallucination risk, detected issues, and fix suggestions.

03

Optimize with one click

PromptGrade rewrites it with proper structure, constraints, and output format.

Chrome Extension

Grade prompts in ChatGPT
as you type.

The PromptGrade extension detects issues in real time — no copy-pasting, no tab-switching. Score and fix before you hit send.

  • Real-time scoring as you type
  • Inline issue highlights and fix hints
  • One-click optimization
  • Works in ChatGPT
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PromptGradeChatGPT
Summarize this report and also translate it and make it funny|
31/100
3 issues · High risk
Multiple conflicting tasks
No output format
Tone conflicts with accuracy

Simple pricing

Start free. Upgrade when you need more.

Free

$0/month

Analyze prompts instantly. No login required.

  • Prompt analyzer — no login required
  • Prompt score + risk diagnostics
  • Basic improvement suggestions
  • 5 analyses per day
  • 5 optimizations per day
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Pro

$12/month

Founder offer for builders shipping AI features every week.

  • Everything in Free
  • Higher analysis limits
  • Prompt optimization assistant
  • Early access to testing suites
  • Roadmap priority
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Team

$49/month

Collaboration and governance for AI product teams.

  • Everything in Pro
  • Team collaboration
  • Prompt versioning and review
  • CI/CD integration
  • Shared reliability dashboards
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Enterprise

Contact

Custom security, scale, and support for advanced teams.

  • Everything in Team
  • SSO and role-based access
  • Custom compliance controls
  • Private deployment options
  • CI/CD integrations
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Stop shipping prompts that fail.

Grade your first prompt in 10 seconds — no account needed.

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