Best AI Tools in United States of America 2025
Sep 2025
Discover The Top 50 AI Products
Check out the top ranking list of the best AI products in United States of America. Compare traffic, market shifts and growth trends.
Key Takeaways
Fast Growing Top AI Tools in September 2025
Knowt, GPTZero, and Copyleaks all surged past 100% growth! This explosive user adoption signals strong product-market fit. Keep an eye on these rising stars!
AI Products Facing Sharply Declined Traffic in September 2025
Grok variants and LINER faced traffic dips exceeding 19%. This highlights the volatile AI landscape, where user preferences can shift rapidly. Adaptation is key!
Ranking List
| Rankings | Monthly Visits | ||
 | ChatGPT | 1.1B | |
 | Gemini 2.5 Flash Image (Nano Banana) - Official | 167.6M | |
 | Character.ai | 61.7M | |
4 | Claude Sonnet 4.5 | 47.8M | |
5 | Janitor AI | 38.1M | |
6 | HubSpot | 13.3M | |
7 | Perchance AI | 7M | |
8 | GPTZero | 6.6M | |
9 | Gauthmath | 6.4M | |
10 | Beacons | 6.3M | |
11 | DeepL | 5.7M | |
12 | Mailchimp | 5.5M | |
13 | CrushOn.AI | 5M | |
14 | CapCut | 4.9M | |
15 | Miro | 4.8M | |
16 | Grok Code Fast 1 | 4.6M | |
17 | xAI Grok-2 | Grok Aurora | 4.6M | |
18 | Otter.ai | 4.5M | |
19 | Civitai | 4.4M | |
20 | Course Hero | 4.3M | |
21 | Goku | 3.7M | |
22 | DeepAI | 3.7M | |
23 | Replit | 3M | |
24 | Branded | 3M | |
25 | Knowt | 3M | |
26 | Speechify | 2.8M | |
27 | Klaviyo | 2.8M | |
28 | Candy.ai | 2.5M | |
29 | Poe | 2.5M | |
30 | Aura | 2.4M | |
31 | LINER | 2.1M | |
32 | Gamma | 1.9M | |
33 | Hint | 1.9M | |
34 | OpenArt | 1.8M | |
35 | Superhuman Email | 1.8M | |
36 | Fathom | 1.8M | |
37 | NoteGPT | 1.8M | |
38 | DataCamp | 1.5M | |
39 | OpenRouter | 1.4M | |
40 | Intercom | 1.3M | |
41 | InVideo | 1.3M | |
42 | Freed | The AI Medical Scribe for Clinicians | 1.2M | |
43 | Leonardo.ai | 1.2M | |
44 | Gong - Revenue Intelligence Platform | 1.2M | |
45 | Kindroid | 1.1M | |
46 | OpusClip Captions | 1.1M | |
47 | PixAI - AI Art Generator | 1M | |
48 | Copyleaks | 1M | |
49 | Kapwing | 906.3K | |
50 | NovelAI - The AI Storyteller | 782.4K |
Top 5 Growing AI Tools - Trends & Analysis
No.1 - Knowt: Gained 1.7M monthly visit growth and 71.6% growth rate
Knowt experienced significant growth potentially due to its AI-powered features that convert notes into flashcards and quizzes. The platform's free access and seamless Quizlet integration also likely contributed, making it a popular alternative for students.
No.2 - GPTZero: Gained 4.7M monthly visit growth and 56.1% growth rate
GPTZero experienced significant growth due to enhanced AI detection capabilities, particularly in countering advanced AI models like ChatGPT o1, achieving a 98%+ accuracy rate. The platform's updates, including improved GPT-5 detection and features like Source Finder, have also contributed to its increased traffic.
No.3 - Copyleaks: Gained 618.9K monthly visit growth and 31.3% growth rate
Copyleaks experienced substantial growth likely due to recognition for its AI Logic feature, winning the Tech & Learning Awards of Excellence. The integration of Copyleaks into D2L's Brightspace Assignments also provided faster insights for educators, and their AI content detection capabilities have become increasingly crucial for maintaining authenticity.
No.4 - Gauthmath: Gained 5M monthly visit growth and 56.0% growth rate
Gauthmath experienced significant growth, likely due to its AI-powered homework assistance features, including instant, step-by-step solutions from a photo and optional access to live tutors. The app updates in September may also have contributed to this growth.
No.5 - Course Hero: Gained 2M monthly visit growth and 33.5% growth rate
Course Hero experienced significant growth potentially due to its continuous funding as a unicorn with a valuation of $3.6B and its feature such as course-specific resources and 24/7 tutoring support. The platform's provision of study guides and practice problems could also attract more users.
Frequently Asked Questions
The rankings are based on monthly traffic data from the third-party platform Similarweb, which ranks products by the number of visits to their websites during a given month. The results are not influenced by any commercial partnerships or advertising, and no subjective evaluations are involved, ensuring the objectivity and fairness of the rankings.To elaborate, our research indicates that websites are a common and important way to use AI tools, so this ranking primarily uses website traffic as an objective metric. The goal is to help users understand the growth trends and changes of top AI products and make it easier to choose the right tools. However, it is inevitable that some AI products, which offer services in other forms, might have their actual traffic unaccounted for.