For the first time, ChatGPT fell below 50% of AI-app users — about 46%, per Sensor Tower. Gemini's at ~28%, Claude ~10%.

Before anyone calls it a fall: by web traffic ChatGPT still leads at ~54.7% with 1.1B+ monthly users. It's still #1 overall. What's actually ending is the single-app habit. Quick breakdown of the numbers here:

As someone who builds full-stack and mobile stuff on the side, that shift just matched what had already happened on my own machine. At some point I stopped asking "which AI is best?" and started asking "which one for this task?" Here's the split that stuck for me:

• Claude for code — refactors, reading unfamiliar repos, long files. It also has the highest paid-conversion of the majors (~13%), which kind of tracks: people who code all day tend to keep paying.
• Gemini for email, search, and anything already in a Google tab — it replaced Google Assistant and is baked into Android/Chrome/Gmail, so it's just there. Zero install friction is underrated.
• ChatGPT for general questions and quick drafts — still the default, still the most polished for one-shot stuff.

Why are the others catching up at all? Three things, and none of them are "ChatGPT got worse":

1. Distribution. Gemini ships inside Google's products. ChatGPT you install yourself. On mobile especially, default-installed wins.
2. Trust. After OpenAI's US Department of Defense deal, analysts logged a spike in ChatGPT uninstalls and a matching rise in Claude downloads. Some people switch on values, not features.
3. The question changed. "Best AI" → "best AI for this."

The dev takeaway: routing per task isn't a power-user hack anymore, it's just the normal way to work now. And honestly the competition is the good part — features ship faster and prices keep dropping while three labs fight over the same tab.

How are you splitting yours? I'm curious whether other devs landed on the same Claude-for-code / Gemini-for-glue / ChatGPT-for-general split, or something completely different.

Sources: Sensor Tower (app-user share), Similarweb (web traffic), Reuters Institute Digital News Report 2026.