Platform for building custom AI chatbots trained on a business's own content.
12 sites
11 found by StackScope, 1 via launch platforms
- StackScope Discovery (Indie) 7
- StackScope Wider Web 4
- Product Hunt 1
CustomGPT.ai has been detected on 12 launches we've crawled, with 8 of those in September 2026 (0.0% of the month's launches so far). Most recent detection: Kasm Workspaces | The Container Streaming Platform, 6 days ago.
It's most commonly paired with Cloudflare, Google Analytics, and Google Tag Manager.
Domain endings using CustomGPT.ai
12 sites
- .org 75.00%
- .be 8.33%
- .com 8.33%
- .uk 8.33%
Share of new sites using CustomGPT.ai
Each dot is one launch day. Line is the 7-day rolling average. Chart starts at first detection.
The shaded part of the chart is measured against a different set of sites.
Amber: on 10 September 2026 we improved our infrastructure so we can index new sites much sooner, often on the day they go live. Sites found that early often haven't finished setting up, so anything usually added after launch reads lower from that date. We record each site as it was when we found it.
The share is a proportion of whatever we were tracking at the time, so it can step at that line without the technology itself changing. For a single continuous measure, switch to launch platforms.
AI Agent leaders
| Tool | % of launches | % of category | ||
|---|---|---|---|---|
| #1 | – | WebMCP | 3.00% | 97.75% |
| #2 | – |
|
0.01% | 0.30% |
| #3 | – |
|
0.01% | 0.28% |
| #4 | ▲3 |
|
<0.01% | 0.15% |
| #5 | ▼3 |
|
<0.01% | 0.14% |
| … | ||||
| #35 | ▼3 |
|
<0.01% | 0.01% |
Percentages show adoption among indie launches: the share of all analysed launches, and of launches using any AI Agent tool.Among August launches it ranked #51 in AI Agent, down from #48 in July. All 591 in AI Agent →
Recent launches we can show
8 of the 12 sites using CustomGPT.ai are product launches we list individually. The other 4 are sites we found crawling the wider web: they count towards the figures above, but we do not publish them one by one. How StackScope Discovery works
Agentic Requirements Engineering
The StackScope API serves all 12 sites using CustomGPT.ai, filterable and exportable, from £15 a month.