The 10 most used AI tools in 2026, by published numbers
Who actually has the users: ChatGPT, Gemini, Copilot and seven more, each with the metric, the source, and the date it was published.
Almost every “most used AI tools” list you will find recycles numbers with no primary source. So here is the version with receipts: ten tools, each with a usage figure we traced to a vendor statement, an SEC filing, or a named measurement firm, plus the date it was published.
Read the metrics carefully, because they are not interchangeable. Weekly active users, monthly app users, paid seats, cumulative sign-ups, and estimated web visits measure different things, and vendors publish whichever flatters them, usually alongside earnings or a funding round. Where only an outside estimate exists, we say so.
One pattern matters more than the ranking itself: the category is growing far faster than its leader. Average monthly visits across generative-AI platforms grew 70% year over year to 9.5 billion (Similarweb, July 2026), while ChatGPT’s share of those visits fell from about 76% to roughly 53%.
The 10 most used AI tools in 2026
ChatGPT
Still the clear leader: OpenAI reported more than 900 million weekly active users in February 2026, alongside 50 million consumer subscribers and 9 million paying business users. Weekly — not monthly — which makes it the strongest engagement figure on this list. Sensor Tower puts it above 1.1 billion monthly users.
Google Gemini
The fastest riser. Alphabet reported 950 million monthly active users for the Gemini app in its Q2 2026 earnings, with daily actives tripling year over year — up from 400 million at I/O 2025. Separately, Google says AI Overviews reaches over 2.5 billion monthly users, though that is search, not a tool you choose.
Microsoft Copilot
The enterprise-distribution play. Microsoft last stated 900 million monthly users of its AI features in October 2025 and has not restated it since; the fresh number is commercial traction — over 30 million paid Microsoft 365 Copilot seats as of July 2026, with net seat additions more than doubling quarter over quarter.
Meta AI
Enormous but embedded: Meta reported more than a billion monthly actives in October 2025 and has not updated the figure in any 2026 quarter. Most of that usage arrives inside WhatsApp, Instagram, and Facebook rather than from people seeking out an AI tool — worth separating from deliberate use.
CapCut
The one most “AI tool” lists miss. a16z ranks it the #2 mobile generative-AI app at 736 million monthly active mobile users (Sensor Tower, January 2026). Video editing with AI captions and effects is mass-market in a way most chat assistants are not.
Canva
265 million monthly active users and 31 million paid users at $4 billion ARR (company figures, February 2026), with 10 million monthly users on its AI-powered mini-apps alone. The clearest evidence that AI features inside an existing habit beat standalone AI products.
DeepSeek
No official user count exists, but the traffic is real: 430 million monthly visits to deepseek.com plus 375 million to its chat subdomain (Similarweb, May 2026). Sensor Tower notes ChatGPT, DeepSeek, and Gemini together account for nearly 90% of all time spent in gen-AI mobile apps.
Claude
Anthropic deliberately publishes no user numbers — confirmed to TechCrunch — so the 245 million monthly users here is a Sensor Tower estimate (about 10% of assistant usage). What Anthropic does disclose is revenue: a $47 billion run rate as of May 2026, which suggests unusually valuable rather than numerous users.
Grok
The only audited-grade figure on this list: SpaceX’s IPO filing disclosed 117 million monthly actives for Grok AI features as of March 2026, out of 550 million across Grok and X combined. Treat the widely-quoted “600 million” as the combined number, not Grok’s.
GitHub Copilot
50 million users cumulatively (Microsoft, July 2026) and the most-adopted AI coding tool in JetBrains’ January 2026 survey of 10,000+ professional developers: 29% use it at work, ahead of Cursor and Claude Code at 18% each.
Two names are missing for a reason. Perplexity’s last official usage figure dates to May 2025, and Midjourney has never published a user or subscriber count — both are widely used, neither can be ranked honestly. Grammarly (now Superhuman) reports 40 million people, but quietly changed the wording from “daily users” while the number stayed flat.
The practical caution: most used is not the same as best for your task. Two of the biggest numbers here — Meta AI and AI Overviews — come from AI placed in front of people rather than chosen by them, and web-traffic rankings systematically undercount API and enterprise usage. Popularity tells you what is safe to adopt; it says nothing about whether a tool fits the specific job you are doing.
Questions people ask
- What is the most used AI tool in 2026?
- ChatGPT, on the strongest published metric: OpenAI reported more than 900 million weekly active users in February 2026. Google’s Gemini app reported a higher headline number — 950 million monthly active users in July 2026 — but monthly and weekly figures are not comparable, and weekly is the harder bar.
- Is ChatGPT still the most popular AI tool?
- Yes, but by a shrinking margin. Similarweb measured its share of generative-AI web visits falling from roughly 76% to 53% between June 2025 and May 2026, and Sensor Tower recorded its cross-platform share dropping below 50% for the first time in 2026. Gemini absorbed most of that shift.
- How many people use Google Gemini?
- Alphabet reported 950 million monthly active users for the Gemini app in its Q2 2026 earnings (July 2026), up from 400 million at Google I/O in May 2025, with daily active users tripling year over year.
- Which AI coding tool do developers actually use most?
- GitHub Copilot. In JetBrains’ survey of more than 10,000 professional developers (data from January 2026), 29% reported using it at work, ahead of ChatGPT at 28% and both Cursor and Claude Code at 18%.
- Are these AI usage numbers comparable to each other?
- No, and that is the main pitfall in every ranking like this. Weekly actives, monthly app actives, paid seats, cumulative sign-ups, and estimated web visits measure different behaviours. Vendor figures are also self-reported and unaudited, typically published alongside earnings or fundraising.
Figures from: OpenAI (Feb 2026), Alphabet Q2 2026 earnings and Google I/O 2026, Microsoft FY26 Q4 and Q1 earnings calls, Meta Q3 2025 earnings, Canva via TechCrunch (Feb 2026), Anthropic Series H, SpaceX S-1 via TechCrunch (May 2026), Grammarly/Superhuman, a16z Top 100 Gen AI Consumer Apps 6th edition (Mar 2026), Sensor Tower State of AI 2026, Similarweb (May and July 2026), and JetBrains developer research (Apr 2026). Each figure is dated because usage claims age quickly.
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