Anthropic is the more common of the two in our index: it runs on 5,939 websites against 207 for ElevenLabs, and 134 sites use both. Counts come from real scans, not vendor claims.
Anthropic is an AI safety company that develops Claude, a family of large language models, and provides an API for building AI-powered applications. The anthropic-domain-verification TXT record confirms domain ownership for Anthropic services.
ElevenLabs provides AI speech synthesis and voice cloning services.
134 sites run both Anthropic and ElevenLabs. That is 65% of the sites using ElevenLabs, the smaller of the two.
Want to know which one a particular site uses? Look it up and see its whole stack, or compare two sites side by side.