About Fourth Feed

Fourth Feed is a directory of AI video tools: text and image to video, avatars and lip sync, editing and captions, dubbing, lyric and music videos, faceless shorts, and the APIs behind them. It is kept as plain data files so people and AI agents can read it the same way. Each entry says what the tool does, what it costs and what it gives away free where the site says so, how much traffic it gets where we have looked, and whether it is ready for agents (llms.txt, official MCP registry, public API).

What gets listed. Tools that generate or edit video, and the things you need to make one: video model APIs, video platform data APIs, voiceover and dubbing, and music made for video. Pure image, writing or coding tools are not listed.

Where the data comes from. Tools are added from our own research and from daily reading of new listings (domain names only). For each site we read robots.txt, then /llms.txt, then the home page title and meta description. A site with none of these is not a real page and is not listed. Sites that block automated visitors are skipped, not worked around. The summary on each page is written by us in our own words; the "From the site" lines are the site’s own title and description, shown as the site published them.

Traffic and revenue figures appear only for tools we have looked into, and each one names its source and month. Prices and free tiers are copied only when the tool’s own page states them.

Referral codes. Some tools give credits to both sides when a new user signs up with a referral link. The codes on /referrals are our own, from accounts we use; we get credits or a commission when you use them, and every referral page says so. We list a code only when the tool’s referral terms allow sharing it, and we remove it when the program ends.

Crawler. Our reader identifies itself as FourthFeedBot/1.0 (+https://fourthfeed.com/about), visits one page of a site at a time, and waits five seconds between requests to the same site.

Comparisons. We give each tool the same job and report what came out, including which one did it best for that job. Some comparisons end with a link to a product we make; the note next to the link says so, and that product is not in the comparison table. Makers of video tools can also publish a comparison (/write): every one is reviewed, the ones they paid for are labeled Sponsored, and their links carry rel="sponsored".

For agents. /llms.txt describes the site and lists our referral codes; /llms-full.txt lists every tool on one line; every page has a .json and a .md version (add the extension to the address); /api/v1/tools searches without a key; /data/tools.json is the full export; /mcp is an MCP server, read-only apart from submit_tool. To submit a tool, see /submit.

To correct or remove an entry, write to support@fourthfeed.com with the domain name. We act on removal requests from the site’s owner.