| What it does | See what every AI prompt costs and rewrite it in one click
| Human evaluation for text-to-speech with blinded listening studies
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| Stage | Not given
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| Founded | Not given
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| Based in | GB
| US
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| Pricing model | Freemium
| Paid
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| Pricing | 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
| $18.00 per hour of audio heard by listeners; $0.30 per judgement on a pair of two 30-second clips; $300.00 for 200 pairs × 5 ratings with 30-second clips (1,000 judgements)
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| Key features | - 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
| - Blinded paired-preference studies with no system names visible
- API for creating studies and retrieving results
- Exact price quote before study starts
- Per-judgement data export as CSV
- Paid US-based listener panel
- Attention signals recorded with every judgement
- Live results streaming as listeners answer
- Detection template for AI vs human narration
- Published methodology and platform transparency
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| What makes it different | - 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
| - Publishes its own listening studies on the same platform with the same methodology as customer studies
- Forced-choice preference testing answers which system people prefer, not rating scales
- Fast turnaround with live result streaming and no minimum study size
- Transparent pricing with no setup fees or minimums, quoted before starting
- Customer audio stored securely and used only for that study
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| Community votes | 0 | 0 |
| DR (Domain Rating by Ahrefs) | Not checked yet ● no change since last check | 8 ● no change since last check |
| Trust Flow (Majestic) | 0 | 9 |
| Citation Flow (Majestic) | 10 | 24 |
| Referring domains (Majestic) | 2 | 69 |