Aug 2026 AI share ranking
A monthly report of AI chatbot market share and usage worldwide and in Japan as of Aug 2026, with month-over-month change and fastest risers/fallers.
A. The bottom line for Aug 2026
Worldwide #1 is ChatGPT (about 79.4%).The fastest riser is ChatGPT (MoM +1.51pt).
Worldwide share (Aug 2026)
| # | AI tool | Worldwide share | Share ratio | MoM | Trend |
|---|---|---|---|---|---|
| 1 | ChatGPT OpenAI | 79.42% | ▲1.51 | ||
| 2 | Google Gemini | 10.92% | ▲1.00 | ||
| 3 | Perplexity Perplexity AI | 4.34% | ▼1.52 | ||
| 4 | Microsoft Copilot Microsoft | 2.77% | ▼0.30 | ||
| 5 | Claude Anthropic | 2.53% | ▼0.67 | ||
| 6 | DeepSeek DeepSeek | 0.02% | ▼0.01 |
▲ Gained share
ChatGPT▲1.51
Google Gemini▲1.00
DeepSeek▼0.01
▼ Lost share
Perplexity▼1.52
Claude▼0.67
Microsoft Copilot▼0.30
Worldwide share history through Aug 2026
Japan share (Aug 2026)
| # | AI tool | Japan share | Share ratio | MoM |
|---|---|---|---|---|
| 1 | ChatGPT OpenAI | 72.44% | ▲5.98 | |
| 2 | Google Gemini | 15.97% | ▼2.70 | |
| 3 | Microsoft Copilot Microsoft | 7.05% | ▼2.23 | |
| 4 | Claude Anthropic | 2.51% | ▼0.53 | |
| 5 | Perplexity Perplexity AI | 2.02% | ▼0.41 | |
| 6 | DeepSeek DeepSeek | 0.01% | ▼0.09 |
Source: StatCounter Global Stats (AI Chatbot Market Share) ／ Captured: 2026-08 ／ reference value
Frequently asked questions
Which AI had the highest share in Aug 2026?
ChatGPT, with a worldwide market share of about 79.4% (StatCounter).
Which AI gained the most in Aug 2026?
ChatGPT gained the most, at MoM +1.51pt.
⚠ These rankings are reference values based on public market-share data, web-traffic estimates and editorial research, and do not represent a complete count of every user of each AI tool. Rankings change with the measurement method (web-visit share vs. market share, etc.). Always check each official site for the latest information.