How we pick

Every tool is read from its own public homepage, pricing and docs pages, and the source is kept with the listing.

We list only what those pages state: pricing, free plan and features. Nothing is estimated or invented, and there are no ratings.

News summaries are written in our own words and always link to the original story.

The coverage matrix has one column for each AI engine the index follows: Google AI Overviews, Google AI Mode, ChatGPT, Perplexity, Gemini, Copilot and Claude. A tool gets a lit cell only when its own pages say it tracks that engine. A dash means the vendor does not say, which is different from saying it does not track it.

Prices are the lowest paid price a vendor states per month, in US dollars. Annual-only, per-seat-quote and enterprise pricing show as not stated, and we never convert or guess. A free plan is recorded only when the pages describe one; a trial does not count. Features are the ones the vendor lists, shortened to a few words.

We do not rank or score tools. The order on a page is alphabetical, with our own product shown first where it is the lead pick and always labelled as ours.

Our own product, OnyxMetric, is built by Cuanto Labs, the publisher of this site. It is read from its own pages, listed under the same fields and shown in the same matrix as every other tool.