Which of the AI model routers is the most popular?
OpenRouter had the most website visits in September 2026: 21.3M. Kie.ai and AgentRouter followed.
Most popular AI model routers by traffic (September 2026)
Our reading
OpenRouter has 21.3 million visits, about seven times Kie.ai (3.1 million). These platforms resell many AI models behind one key. Be careful with prices far below the official ones: AICPB's survey of 730 such sites warns that some swap in cheaper models or keep users' prompts.
| Rank | Product | Monthly visits | vs last month |
|---|---|---|---|
| 1 | OpenRouterOur review unified LLM API router | 21.3M−4.7% | −4.7% |
| 2 | Kie.aiOur review AI model API aggregator | 3.1M+67.3% | +67.3% |
| 3 | LLM API gateway with free credits | 2.96M−24.7% | −24.7% |
| 4 | Multi-model AI subscription | 2.19M−3.8% | −3.8% |
| 5 | WaveSpeedAIOur review AI image and video generation API | 1.77M−7.4% | −7.4% |
| 6 | NanoGPTOur review Pay-as-you-go access to many AI models | 1.3M+92.5% | +92.5% |
| 7 | Multi-model AI chat subscription | 1.29M+26.7% | +26.7% |
| 8 | LLM API gateway and router | 1.05M+25.7% | +25.7% |
| 9 | Atlas CloudOur review multimodal AI model API platform | 981K−30.4% | −30.4% |
| 10 | Claude API relay service | 838K−4.9% | −4.9% |
Where the numbers come from
Monthly website visits as published by AI产品榜 (AICPB) on 2026-10-12. GenGrades does not measure traffic itself; we check each product, add its official site and logo, and link our review where we have one.
What a visit counts
Visits to the product’s website in the month, from desktop and mobile browsers. Apps, desktop programs and command-line tools are not counted, so products used mostly that way, such as Claude Code or Codex, rank lower here than their real use, or not at all.
Traffic measures attention, not quality. A tool can be popular and still be the wrong choice for your task; our rankings by test score answer that question.
Common questions
Answer first, then why, an example, the limits and what to do next.
Which one grew fastest in September 2026?
NanoGPT grew most among products that were on the list the month before: +92.5%, to 1.3M visits.
Is the most popular tool the best one?
Popularity counts visits, not results. The most visited tool is often the best known or the cheapest to try, not the one that does your job best; our test-based rankings answer that question.
How is this ranking measured?
By monthly visits to each product’s website, as published by AI产品榜 (AICPB). Apps and command-line tools are not counted.