NextPart AI
#51 on the ranking
Nextpart is a credit-metered NSFW roleplay platform that sells memory by the tier, and that idea is better than its reputation, which is almost nonexistent.
Read my full NextPart AI analysis →AI girlfriend sites side by side · Both tested first-hand · Data through September 2026
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NextPart AI vs Kupid.ai
I bought a membership on both and tested each for a month. What they offer, their measured numbers and what their users say, next to each other, with my verdict on each at the end.
The scoreboard
Kupid.ai leads on 3 of the 4 figures that decide most choices.
NextPart AI
Kupid.aiRank on this site#51▲#3
Google US, “ai girlfriend”–#7
Search visits a month3.5K▲131K
Name searches a month, US880▲5.4K
In short
Kupid.ai is the bigger site; here is what separates them.
- Kupid.ai ranks #7 in United States Google results for "ai girlfriend"; NextPart AI holds no tracked position for it, so it is placed by all-traffic rank instead (#3 against #51 on this site).
- Kupid.ai gets about 131,142 search visits a month worldwide against 3,503 for NextPart AI, roughly 37 times as many (DataForSEO, September 2026).
- People search for Kupid.ai by name about 5,400 times a month in the US, against 880 for NextPart AI.
- NextPart AI has no free tier and starts at $9.99/mo; Kupid.ai has a free tier and paid plans from $17.99/mo.
What they offer
| What they offer |  NextPart AI |  Kupid.ai |
|---|---|---|
| Free tier | No | ▲Yes |
| Entry paid plan | $9.99/mo | $17.99/mo |
| Adult content | Allowed on paid plans | Allowed on paid plans |
| Features |
|
|
| Best for | Users wanting balanced anime/realistic designs, voice messaging, privacy-friendly crypto payments, and competitive pricing | Users seeking deep, text-based emotional connection with immersive visuals who can tolerate slower response times |
| Not for | Users requiring a native mobile app, free trial access, real-time video calls, or an affiliate program | Those who prioritize real-time voice interaction or need responsive customer support |
| Operator | Not disclosed on the site or in any source I read; support runs through support@nextpart.ai and a Discord, and the domain was registered through Namecheap in December 2023 | SNB Technologies Limited |
| Pricing notes | Monthly: $9.99, $19.99. Yearly: $83.88, $155.88. Confirmed still accurate. Crypto accepted. No free tier. The top Deluxe tier now also includes a beta character video generation feature. | Plans are now monthly-only, starting around $17.99/mo (unlimited messages plus a set image/voice allowance) and scaling up through mid tiers to roughly $49.99/mo for unlimited images and voice plus video-generation coins. Cryptocurrency accepted. Coins/credits available for one-off feature purchases including video. |
My take
If you want to try before you pay, Kupid.ai lets you: NextPart AI asks for a card first. A free tier is a sampler, not a plan, but it tells you whether the chat suits you before money moves. NextPart AI is the cheaper way in at $9.99/mo against $17.99/mo for Kupid.ai. The entry price is only part of it: image, voice and video are often metered on top, so the pricing notes row matters as much as the headline.
The numbers
| The numbers | NextPart AI | Kupid.ai |
|---|---|---|
| Rank on this siteOn the combined data gathered for every site | #51 | ▲#3 |
| Google US rank, “ai girlfriend”DataForSEO ranked keywords, September 2026 | – | #7 |
| Tranco rank, all domainsAll-traffic rank among the top million domains | #680,568 | ▲#254,630 |
| Chrome UX tierGoogle Chrome UX Report | Top 1,000,000 | ▲Top 500,000 |
| Search visits a month, worldwideDataForSEO estimate | 3,503 | ▲131,142 |
| Search visits a month, US | 2,306 | ▲31,822 |
| Brand searches a month, USGoogle Ads data via DataForSEO | 880 | ▲5,400 |
| Domain RatingDomain Rating by Ahrefs, out of 100 | 38 | ▲73 |
| Referring domains | 2,016 | ▲3,424 |
| Backlinks | 47,890 | ▲437,714 |
| Domain registered | December 2023 | June 2023 |
| Public record I read | 0 videos, 2 Reddit threads, 0 articles | 6 videos, 0 Reddit threads, 2 articles |
The better value in each row is marked in green. Search visits and brand searches are DataForSEO estimates; Tranco and Chrome UX tiers are ranks, not visit counts.
My take
Start with the row this site ranks on. When someone types "ai girlfriend" into Google in the US, Kupid.ai is there at #7; NextPart AI does not appear in the tracked positions at all. That is why Kupid.ai sits higher here even if it is the smaller site: it is the one the category sends newcomers to. On size, Kupid.ai is the busier site: 131,142 search visits a month worldwide, more than 35 times what NextPart AI gets (3,503). These are estimates of visits from Google only, so a site with apps or ads can be bigger than this shows. Brand searches are the loyalty line: 5,400 people a month type Kupid.ai's name, against 880 for NextPart AI. A name people type on purpose is a site they come back to; a site with lots of visits and few brand searches is living on rankings it could lose. Kupid.ai's Domain Rating of 73 against 38 means far more sites link to it, which is what keeps rankings stable; the weaker link profile is the one more likely to move, up or down, when Google reshuffles. In plain terms: Kupid.ai is both the bigger site and the one the category search points to.
What users say, and what I found
| Feature by feature | NextPart AI | Kupid.ai |
|---|---|---|
| Chat and roleplay | Users mixedMy test: Disagree | Users positiveMy test: Agree |
| Memory | Users positiveMy test: Partly disagree | Users mixedMy test: Partly disagree |
| Image generation | Users positiveMy test: Agree | Users mixedMy test: Agree |
| Voice | Users mixedMy test: Agree | Users positiveMy test: Agree |
| Video | Users mixedMy test: Partly disagree | Users mixedMy test: Agree |
| Characters and customisation | Users positiveMy test: Agree | Users positiveMy test: Agree |
| Free tier | Users negativeMy test: Disagree | Users negativeMy test: Agree |
| Price and credits | Users mixedMy test: Partly disagree | – |
| Privacy and billing | Users negativeMy test: Agree | – |
| Safety and legitimacy | Users mixedMy test: Agree | – |
| Proactive messaging | – | Users mixedMy test: Partly disagree |
| Price and billing | – | Users negativeMy test: Agree |
| Privacy and legitimacy | – | Users mixedMy test: Agree |
“Users” is the balance of the YouTube reviews, Reddit threads and articles read for each brand page; “my test” is whether my own month on the site agreed with them.
My take
Users rate them about the same: 3 of 10 features positive for NextPart AI and 3 of 10 features positive for Kupid.ai. Where they split, NextPart AI gets the better word on memory and image generation. Kupid.ai gets it on chat and roleplay and voice. Both get the same complaint on free tier, so that is a category problem rather than a reason to pick one over the other. My own month did not always match the crowd: I disagreed with users on 5 points for NextPart AI and 2 points for Kupid.ai, and each disagreement is spelled out on the brand page.
My verdict on each
Kupid.ai
#3 on the ranking
Kupid AI has the best voice and one of the best conversations in the category, and the worst way of charging for them.
Read my full Kupid.ai analysis →More comparisons
Written by Hunter Gray, Founder, Owner & Writer. Every figure is from the two brand pages and refreshes monthly. NextPart AI and Kupid.ai are two of the sites in my best AI girlfriend ranking, where the whole category is ordered on the same data.