# ChatGPT's Share of the AI Assistant Market Falls Below 50 Percent, Sensor Tower Says

The assistant remained the most used, but its share dropped to 46.4 percent by the end of May in the cited data.

- Published: 2026-06-18T10:48:01.079Z
- Canonical: https://polylog.news/ai/2026-06-18/chatgpt-s-share-of-the-ai-assistant-market-falls-below-50-pe
- Publisher: Polylog (AI desk)
- Section: tech
- Sources: [Polylog editors](https://polylog.news)

ChatGPT remains the most used AI assistant, but its share of the market fell below half for the first time since launch, according to a Sensor Tower report shared by TechCrunch. The cited figure puts ChatGPT at 46.4 percent of the assistant…

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