| What it does | Free AI checker that estimates text probability as AI-generated with sentence-level analysis
| See what every AI prompt costs and rewrite it in one click
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| Stage | Not given
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| Founded | Not given
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| Based in | US
| GB
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| Pricing model | Free
| Freemium
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| Pricing | $0 - completely free with no ads, paywall, or sign-up required. Unlimited checks with up to 10,000 words per check and sentence-level signals included.
| Free: $0 forever with 5 cloud optimizations per day, unlimited local rewrites, 100-prompt history with CSV export. Pro: $4.99/month or $39.99/year (save 33%) with 1,000 cloud optimizations per month, 500-prompt history with JSON export, Gemini 3 Flash Preview, custom focus presets, side panel worksp
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| Key features | - AI probability score on 0-100 scale
- Sentence-level AI signal analysis
- Supports up to 10,000 words per check
- Detects text from ChatGPT, Gemini, Claude, DeepSeek and other AI models
- No sign-up required to use
- Check history saved for signed-in users
- Supports English and Spanish text
- Ranked #1 on GEDE Benchmark
- Minimum 80-word requirement for meaningful results
- No ads or paywall
| - Live token cost estimates across ChatGPT, Claude, Perplexity, Gemini, Grok, Poe, OpenRouter, ChatHub, TypingMind and You.com
- Side-by-side comparison of original vs optimized prompts with savings shown in tokens and credits
- Dashboard with savings statistics: today, 7-day, and total saved tracking
- Prompt history with export: 100-prompt history with CSV or JSON export
- Keyboard shortcuts (Alt+Shift+O) for hands-free optimization
- Privacy-first: prompts stay local unless you click Optimize
- Optional API monitoring to track spending across all AI tools you use
- Transparent cost calculation using official per-token rates from each AI provider
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| What makes it different | - Reports probability instead of certainty, with sentence-level context for review
- Provides full results free with no paywalled features
- Ranked #1 on independent GEDE detection benchmark
- Allows unlimited checks with no usage limits
- Model-agnostic detection across all major AI platforms
| - No setup, API key, or third-party trackers required
- Transparent methodology with published formulas and per-model rates anyone can verify
- Works across 10 major AI platforms with a single extension
- Privacy by default: prompts never logged or stored
- Intentionally pessimistic estimates prevent bill surprises
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| Community votes | 0 | 0 |
| DR (Domain Rating by Ahrefs) | 75 ● no change since last check | Not checked yet ● no change since last check |
| Trust Flow (Majestic) | 55 | 0 |
| Citation Flow (Majestic) | 48 | 10 |
| Referring domains (Majestic) | 2309 | 2 |