Industry Overview
Second-hand Marketplaces leaderboard shows which brands AI engines recommend most consistently right now. Current leaders include eBay, Mercari, Poshmark across 8 tracked engines.
Use the engine tabs below to compare how individual AI systems rank brands differently. Overall ranking summarizes the latest visibility signals across all tracked engines.
Why This Matters
Use the overall ranking to see who leads this category at a glance, then drill into individual AI engines to understand where visibility is strong, weak, or inconsistent.
30
Brands
8
AI Engines
Apr 18, 2026
Last Updated
ChatGPT
gemini
Grok
Claude
DeepSeek
MiniMax
KimiTop Brands Snapshot
Jump directly into the strongest brands in this category
Qwen
Latest completed ranking for Qwen.
| Rank | Brand | AI Index | Mention Rate |
|---|---|---|---|
👑 #1 | 91.4 | 100.0% | |
🥈 #2 | 63.0 | 71.4% | |
🥉 #3 | 61.3 | 85.7% | |
| #4 | 42.2 | 42.9% | |
| #5 | 40.9 | 57.1% | |
| #6 | 37.4 | 28.6% | |
| #7 | 33.7 | 14.3% | |
| #8 | 30.4 | 28.6% | |
| #9 | 25.7 | 14.3% | |
| #10 | 24.0 | 0.0% |
FAQ
How is this leaderboard calculated?
Overall ranking combines the latest AI visibility signals across tracked engines for this industry.
Why do rankings differ across engines?
Each AI engine can prefer different brands, evidence, and recommendation patterns, so engine-specific rankings can vary.
How often is this industry updated?
This industry page updates whenever new completed leaderboard runs are available.