Best 50 AI Tools for Sep 2025
Sep 2025
Discover Top AI Products
See which AI tools led the way in Sep 2025 with the most traffic performance. Explore top features and growth trends.
Key Takeaways
Fast Growing Top AI Tools in September 2025
Knowt, GPTZero, and Gauthmath's surge highlights the demand for AI in education. Knowt's 71.6% growth underscores the value users place on smart study tools.
AI Products Facing Sharply Declined Traffic in September 2025
LINER, Grok Code Fast 1, and xAI Grok-2's downturn signals a shift in user preferences. LINER's -28.4% drop prompts reflection on user retention strategies.
Significant AI Trends and Updates
AI evolves rapidly: OpenAI's infrastructure expansion, Claude Sonnet 4.5, & Pixel 10 show progress. Ethical concerns & market growth redefine AI's trajectory.
Ranking List
| Rankings | Monthly Visits | ||
 | ChatGPT | 5.9B | |
 | Gemini 2.5 Flash Image (Nano Banana) - Official | 1.1B | |
 | Character.ai | 185.1M | |
4 | Claude Sonnet 4.5 | 157M | |
5 | DeepL | 134.3M | |
6 | Janitor AI | 102.1M | |
7 | CapCut | 39.4M | |
8 | HubSpot | 37.1M | |
9 | Miro | 31.9M | |
10 | Gamma | 28.2M | |
11 | Beacons | 21.2M | |
12 | Civitai | 19.2M | |
13 | CrushOn.AI | 18.9M | |
14 | Perchance AI | 17.4M | |
15 | Grok Code Fast 1 | 15.2M | |
16 | xAI Grok-2 | Grok Aurora | 15.2M | |
17 | Poe | 15.1M | |
18 | Gauthmath | 14M | |
19 | GPTZero | 13M | |
20 | Goku | 12.9M | |
21 | DeepAI | 12.9M | |
22 | Mailchimp | 11.5M | |
23 | Leonardo.ai | 10.7M | |
24 | Replit | 10.5M | |
25 | Candy.ai | 10.3M | |
26 | PixAI - AI Art Generator | 10.1M | |
27 | Monica - Your ChatGPT AI Assistant Chrome Extension | 9.5M | |
28 | OpenRouter | 9M | |
29 | OpenArt | 8.8M | |
30 | Course Hero | 8.1M | |
31 | Otter.ai | 7.8M | |
32 | NoteGPT | 7.3M | |
33 | InVideo | 6.6M | |
34 | DataCamp | 6.6M | |
35 | LINER | 6.2M | |
36 | Klaviyo | 6.2M | |
37 | chichi-pui | 6M | |
38 | Speechify | 5.4M | |
39 | Kapwing | 5M | |
40 | Intercom | 4.2M | |
41 | NovelAI - The AI Storyteller | 4.1M | |
42 | Knowt | 4.1M | |
43 | Branded | 4M | |
44 | Fathom | 3.8M | |
45 | Notta | 3.7M | |
46 | Consensus | 3.5M | |
47 | AirBrush | 3.5M | |
48 | Moises AI Studio | 3.4M | |
49 | Moises App | 3.4M | |
50 | Hint | 3.2M |
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 likely due to its AI-powered study tools, which automatically generate flashcards and quizzes from notes, PDFs, and other materials. Its seamless integration with Quizlet and free access also contributed to user adoption.
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 identifying text from advanced AI models like ChatGPT o1 and GPT-5. The update to its detection model, achieving a 98%+ accuracy rate, and the introduction of features like Source Finder also contributed to this growth.
No.3 - Gauthmath: Gained 5M monthly visit growth and 56.0% growth rate
Gauthmath experienced significant growth, likely driven by its AI-powered homework assistance features, as highlighted in recent reviews. The app's ability to provide instant, step-by-step solutions through photo recognition and AI-driven explanations, coupled with updates to version 1.83.0, likely contributed to this increase in visits.
No.4 - Gemini 2.5 Flash Image (Nano Banana) - Official: Gained 334.5M monthly visit growth and 46.2% growth rate
Gemini 2.5 Flash Image experienced moderate growth due to the Gemini 2.5 Flash Image release, which brings new image generation and editing capabilities. Additionally, the integration of Gemini with Chrome for U.S. users provided browsing assistance and deeper integration with Google apps, contributing to the increased traffic.
No.5 - Course Hero: Gained 2M monthly visit growth and 33.5% growth rate
Course Hero experienced moderate growth likely due to its established online learning platform, which offers course-specific resources and online tutors. The platform's continued presence as a unicorn, with a $3.6 billion valuation, may contribute to user confidence and platform usage.
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.