AI shopping agents have crossed from demo to daily use. When a user asks ChatGPT, Operator, Comet, or Claude with computer use to find and buy a product, the agent now drives a measurable share of carts. This report compiles 2026 conversion statistics that compare agent-driven shopping against human sessions, broken out by platform and category. The headline finding is consistent across our panel: agents reach the cart faster but convert lower than humans, because checkout and payment friction blocks otherwise-qualified intent. Brands that are both discoverable and machine-payable capture the gap.
Agent vs Human Conversion Rates
Conversion here means a completed purchase divided by sessions that reached a product detail page. Agent sessions show high intent, since the user already issued a buy instruction, yet they finish less often than humans.
| Session type | Reach cart | Reach checkout | Completed purchase |
|---|---|---|---|
| Human desktop | 11.4% | 6.8% | 3.9% |
| Human mobile | 9.1% | 4.7% | 2.6% |
| AI agent (overall) | 34.2% | 18.6% | 7.3% |
| AI agent on agent-ready sites | 41.5% | 29.8% | 16.4% |
| AI agent on non-ready sites | 28.7% | 9.2% | 2.1% |
Conversion by Agent Platform
Platforms differ in how aggressively they complete a purchase versus hand control back to the user for final confirmation.
| Platform | Add-to-cart rate | Completed purchase | Avg order value (modeled) |
|---|---|---|---|
| OpenAI Operator | 37.1% | 9.2% | $78 |
| ChatGPT agent mode | 33.8% | 7.8% | $64 |
| Perplexity Comet | 31.5% | 6.1% | $92 |
| Claude computer use | 29.4% | 5.4% | $110 |
| Other / custom agents | 26.0% | 4.3% | $58 |
Key Findings
- Intent is higher, completion is lower. Agents reach the cart roughly 3x more often than humans, but only convert about 2x as well, because checkout friction erases part of the advantage.
- Readiness more than doubles conversion. On agent-ready sites, agent purchase completion hits 16.4% versus 2.1% on sites that block automated checkout.
- Order values skew higher. Agent-mediated orders average $80 across platforms, above the $54 human baseline, reflecting research-heavy, considered purchases.
Methodology
Data is compiled from the Presenc AI monitoring platform plus public sources, with Presenc AI estimates used where authoritative figures are unavailable. Agent transaction metrics are modeled from observed agent traffic and vendor-reported benchmarks. Projections use compound growth modeling. Findings are reviewed quarterly. Last update June 2026.
How Presenc AI Helps
Conversion only matters if agents can find you and pay you. Presenc AI shows brands which AI agents are visiting their site, what products those agents surface, and where checkout breaks down for automated sessions. Track which AI agents hit your site and get an agent-payable readiness score so you stop losing high-intent agent carts to fixable friction.