Second-hand Marketplaces Sonar AI Rankings

Second-hand Marketplaces AI brand rankings show which brands are most visible in the current public benchmark. Current leaders include eBay, Poshmark, and The RealReal across 16 tracked engines, with score and mention-rate signals combined into the overall AI Index. eBay is 22.7 points ahead of Poshmark, so the gap helps show whether this industry has a clear AI visibility leader or a tighter competitive cluster.

Use the engine tabs below to compare how ChatGPT, Gemini, Grok, and Sonar rank entities differently. Overall ranking summarizes the latest visibility signals across all tracked engines, while engine-specific tabs reveal whether a brand is broadly recommended or over-dependent on one answer system.

This Sonar rankings page is scoped to Second-hand Marketplaces: it shows how entities appear inside one answer engine using mention rate, recommendation strength, and latest snapshot signals. For model-level Sonar rank tracking across industries, use the Sonar benchmark hub. Use the private AI rank tracker when you need recurring monitoring for your own prompts, competitors, saved answer history, actions, validation, and report readiness.