Apr 2026 AI share ranking
A monthly report of AI chatbot market share and usage worldwide and in Japan as of Apr 2026, with month-over-month change and fastest risers/fallers.
A. The bottom line for Apr 2026
Worldwide #1 is ChatGPT (about 76.9%).The fastest riser is Perplexity (MoM +0.66pt).
Worldwide share (Apr 2026)
| # | AI tool | Worldwide share | Share ratio | MoM | Trend |
|---|---|---|---|---|---|
| 1 | ChatGPT OpenAI | 76.86% | ▼1.31 | ||
| 2 | Google Gemini | 8.99% | ▲0.35 | ||
| 3 | Perplexity Perplexity AI | 7.73% | ▲0.66 | ||
| 4 | Microsoft Copilot Microsoft | 3.75% | ▲0.56 | ||
| 5 | Claude Anthropic | 2.66% | ▼0.25 | ||
| 6 | DeepSeek DeepSeek | 0.01% | ▼0.01 |
▲ Gained share
Perplexity▲0.66
Microsoft Copilot▲0.56
Google Gemini▲0.35
▼ Lost share
ChatGPT▼1.31
Claude▼0.25
DeepSeek▼0.01
Worldwide share history through Apr 2026
Japan share (Apr 2026)
| # | AI tool | Japan share | Share ratio | MoM |
|---|---|---|---|---|
| 1 | ChatGPT OpenAI | 58.86% | ▼4.29 | |
| 2 | Google Gemini | 21.18% | ▲0.65 | |
| 3 | Microsoft Copilot Microsoft | 12.12% | ▲5.07 | |
| 4 | Perplexity Perplexity AI | 4.32% | ▼1.00 | |
| 5 | Claude Anthropic | 3.52% | ▼0.36 | |
| 6 | DeepSeek DeepSeek | 0.01% | ▼0.05 |
Source: StatCounter Global Stats (AI Chatbot Market Share) ／ Captured: 2026-06-03 ／ reference value
Frequently asked questions
Which AI had the highest share in Apr 2026?
ChatGPT, with a worldwide market share of about 76.9% (StatCounter).
Which AI gained the most in Apr 2026?
Perplexity gained the most, at MoM +0.66pt.
⚠ 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.