llms.txt vs Surfer
llms.txt is listed under llms.txt & schema, Surfer under Content optimization. Each name links to the product's own site.
| Category | llms.txt & schema | Content optimization |
|---|---|---|
| Pricing | Open source | Paid |
| Public code | Yes | No |
| Tags | llms-txt, standard, markdown, ai-crawlers | content-editor, nlp, on-page, writing |
| Website | llmstxt.org | surferseo.com |
What llms.txt does
Proposal by Jeremy Howard of Answer.AI for a markdown file at /llms.txt that gives language models a short guide to a site and links to its key pages, in a format both people and tools can read.
What Surfer does
Content editor that scores a draft against pages that already rank for a keyword. It suggests terms, headings and length, and has AI writing tools and an audit mode for existing pages.
Other options
See all llms.txt & schema, or alternatives to llms.txt and Surfer.