September 2025: top 10

1. 1ChatGPTsame rank
2. 2Claude AIsame rank
3. 3Grammarlyup 1
4. 4Cursor AIdown 1
5. 5OpenAIup 1
6. 6Zapierdown 1
7. 7Perplexity AIup 1
8. 8NotebookLMup 1
9. 9Google AI Studioup 1
10. 10Gemini Code Assistdown 3

Source: Torii Research, AI Breakout: September 2025 (September 10, 2025). Anonymized, aggregated usage data.