Know which headline wins before you spend traffic on it.
Stage
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Based in
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Pricing model
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Pricing
Free plan with 5 credits per month, Standard plan with 20 credits per month, Professional plan with 100 credits per month. Additional credit packages available for one-time purchase.
Free: $0/month with 5 rankings and 60 Claude-written options monthly. Creator: $19/month with 100 rankings and 2,500 options. Pro: $49/month with 600 rankings and 6,000 options. Agency: $149/month with 3,000 rankings and 20,000 options.
Key features
Structured lyric generation from ideas
Quality scoring for lyrics
Style Creator for consistent musical direction
Vocal Studio for recording and arrangement
Vocal Arrangement with timeline and loop
AI mode with genre, mood and theme selection
Cloud sync for session metadata and audio
Head-to-head comparison of up to 200 variants
Bradley-Terry model ranking with calibrated odds
Honest uncertainty verdicts: Clear, Lean, Too close to call
Brand profiles to calibrate accuracy on your audience
Works for YouTube titles, subject lines, ad headlines, and article headlines
Accuracy measured on 9,841 held-out A/B tests
What makes it different
25 creative actions for song development
Structured workflow from idea to polished lyrics
Vocal recording integrated into songwriting studio
82% accuracy on clear calls, trained on thousands of real A/B tests never seen during tuning
Honest about uncertainty instead of always crowning a winner
56 times cheaper than Claude Sonnet while maintaining comparable accuracy
Custom calibration to your audience's behavior via brand profiles
Compare versions in both orders to cancel out model bias