リクルートエージェント tops AI job-agent picks at 99.3% mention rate

The survey's timing matters: asking ChatGPT or Gemini for a service recommendation is becoming a routine consumer behavior, and Branding Works argues that whether an AI names a company now influences customer acquisition. Its methodology was deliberately narrow — one identical question, sent three times a day to two models over 24 measurement days, yielding 143 valid responses after one API error was excluded — so the results describe a snapshot rather than a stable ranking.

The split between the two models is the more telling finding. ビズリーチ and レバテックキャリア were named in 100% of Gemini answers but only 64% and 62% of ChatGPT answers, while パソナキャリア went the other way (58% on ChatGPT, 15% on Gemini). Because answers are also shaped by which sites the AI cites — career.oricon.co.jp alone accounted for 18.9% of citations, with comparison and ranking sites dominating the top five — a company's placement on those sites appears to influence whether an AI recommends it, though Branding Works frames this as an observed pattern rather than a proven causal link.

Branding Works is itself selling services into this gap: it offers AI search optimization (AIO/LLMO) starting at ¥15,000 per month with no initial fee, and its two-month intensive plan at ¥250,000 per month is positioned for companies that want to act before year-end budgets close.