Both are ai visibility monitoringtools, and both have been checked field by field against their own sites. Below is where they actually differ — and where we couldn't establish a difference.
1 capabilitywhere one offers it and the other states it doesn't.
A/B testing✕No✓Yes
left column Profound · right column Siftly
Every capability, side by side
CapabilityProfoundSiftly
Monitors brand mentions✓Yes✓Yes
Tracks citations✓Yes✓Yes
Sentiment analysis✓Yes?Not published
Competitor benchmarking✓Yes✓Yes
Prompt discovery✓Yes?Not published
Share of voice✓Yes✓Yes
Recommends fixes✓Yes✓Yes
Writes content✓Yes✓Yes
Publishes content✓Yes?Not published
Builds off-site citations✓Yes✓Yes
Does outreach?Not published?Not published
Generates schema / llms.txt✕No?Not published
Technical audit✓Yes?Not published
AI crawler analytics✓Yes?Not published
Traffic attribution✓Yes?Not published
Revenue attribution✕No?Not published
A/B testing✕No✓Yes
Geo segmentation✓Yes✓Yes
AI advertising✓Yes?Not published
Product catalogue optimisation✓Yes✓Yes
Not published is not a no.Where a vendor never states whether it does something, we say so rather than printing a verdict we can't source — so an empty-looking row is a gap in their documentation, not a missing feature.