Know which headline wins before you spend traffic on it.
Stage
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Pricing model
Freemium
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Pricing
Pro: $19/mo billed yearly, Team: $32/mo billed yearly, Enterprise: $66/mo billed yearly. All plans include unlimited words and access to all tools.
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
50+ AI writing tools
Social media and ad copy generation
Grammar checking and rewriting
Sentence rewriter
Content scheduling
SEO optimization recommendations
Chrome extension for AI writing
Adjustable creativity and tone settings
WordPress plugin
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
Low plagiarism rate of 2%
Generate long articles in minutes instead of hours
Powered by GPT-3 AI language model
Trained with conversions in mind
Available in 20+ languages
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