Yes. Anthropic added Brave Search to its subprocessor list on March 19, 2025, the day before web search launched in Claude, as Simon Willison documented. An early Profound test found that 13 of 15 results Claude cited matched Brave's top non-sponsored results, an 86.7% overlap.
What the evidence shows
- Anthropic released web search for Claude on March 20, 2025.
- Brave Search appeared on Anthropic's subprocessor list one day earlier.
- Profound's overlap check counted 13 matches out of 15 cited results.
The overlap figure rests on a small sample from the launch week. Treat 86.7% as an early signal that Brave feeds Claude's answers, not as a fixed rate.
What it means for AEO
Check Brave before you optimize for Claude. Run your priority prompts in Brave Search and note where your pages appear. A page that is missing from Brave's results for a query is a weak candidate for Claude's answer to the same query.
Do not assume Google rank carries over. Brave runs its own index, so a page can rank well on Google and poorly on Brave.
Tracking Claude visibility
Not every AEO tool tracks Claude. The comparison page lists which engines each tool covers, with pricing from each vendor's own page.