Head-to-head
Perplexity vs ChatGPT
In short
Perplexity still checks out in chat through PayPal Instant Buy (since 25 Nov 2025) with the retailer as merchant of record. ChatGPT sends buyers to the merchant site since 24 Mar 2026. On ACP the matrix reads Perplexity no statement found and ChatGPT not supported, and the two split on 1 more protocol.
The sourced difference
Perplexity still checks out in chat through PayPal Instant Buy (since 25 Nov 2025) with the retailer as merchant of record. ChatGPT sends buyers to the merchant site since 24 Mar 2026. newsroom.paypal-corp.com, read 4 Nov 2026.
Verdicts by reader type
- Head of ecommerce engineering
- Perplexity needs PayPal; ChatGPT needs a feed and a fast site.
- Payments lead
- PayPal carries buyer protection on Perplexity orders.
Side by side
| Measure | Perplexity | ChatGPT |
|---|---|---|
| Kind | Agent surface | Agent surface |
| Operator | Perplexity AI | OpenAI |
| Homepage | perplexity.ai | chatgpt.com |
| Matrix cells with a stated status | 0 live, 0 pilot, 1 announced | 0 live, 0 pilot, 2 announced |
| Published pricing | No pricing statement on file | Merchant page: no fees on purchases that start in ChatGPT and complete on the merchant's site or app. The earlier Instant Checkout fee (reported 4% for Shopify merchants) applied to in-chat checkout, now withdrawn as a standalone flow. |
| A limit worth knowing | Perplexity is not merchant of record for Instant Buy; the retailer is. | Does not run a standalone in-chat Instant Checkout for merchants as of 2026-11-04; purchases complete on merchant sites or apps. |
Protocol by protocol: where the statuses differ
2 of 12 protocols read differently for Perplexity and ChatGPT on 4 Nov 2026.
| Protocol | Perplexity | ChatGPT |
|---|---|---|
| ACP | no statement found | not supported |
| Amex ACE | no statement found | announced |
| 2 differences |
Read the profiles
Sources
- PayPal and Perplexity Launch Instant Buy, read 4 Nov 2026
- Comet browser, read 4 Nov 2026
- Power product discovery in ChatGPT (merchants page), read 4 Nov 2026
- Buy it in ChatGPT: Instant Checkout and the Agentic Commerce Protocol, read 4 Nov 2026
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