Know which headline wins before you spend traffic on it.
Stage
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Founded
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Based in
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Pricing model
Freemium
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Pricing
Free: 3 generations per day. Starter: $5 for 25 credits. Writer: $12 for 75 credits. Novelist: $25 for 175 credits. One-time payments, no subscription.
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
Generate complete fanfiction scenes with fandom, characters and tropes
Write 3 free short scenes daily without sign-up or credit card
Support for any fandom including anime, books, games, movies and TV
Pick from multiple tone options including fluff, angst and humor
Generate with AO3-style title, rating, summary and tags
General and Teen And Up ratings only, no explicit content
Choose point of view: first, third or second person
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
Free without requiring account creation or credit card
Simplified interface compared to writing detailed prompts for general AI chatbots
One-time credit purchases with no subscription required
Credits never expire
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
FanficWizard
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