ChatGPT slips below half the market — and the filter gets sharper
For the first time, no single assistant owns most of the users. That is the moment a curation site like this one was built for.
For two years the answer to "which AI assistant should I use" had a lazy default: whichever one everyone else was using. That default just broke. In Sensor Tower's State of AI 2026 report, published 16 June, ChatGPT's share of assistant users fell below half for the first time — 46.4% by the end of May — while Google's Gemini climbed to 27.7% and Anthropic's Claude reached 10.3%.
The trajectory is the story: ChatGPT held 65.3% at the end of 2024 and 52.8% a year later, and crossed under 50% in March before settling at 46.4%. A lead that once looked structural now looks like a head start being spent down.
Read the number carefully
One caveat worth keeping: these are Sensor Tower's deduplicated "True Audience" figures across desktop, mobile app and mobile web — not raw traffic. Other trackers that count web referrals still put ChatGPT far higher, because they are measuring a different thing. The shape of the trend is what matters, and every serious tracker agrees on the shape.
What it means in practice is simple. A three-way race means real differences between tools instead of one safe choice — and that is exactly the gap this site exists to close. Hundreds launch; a handful survive daily use. Below is what cleared our filter this edition.