Insights — Updated Quarterly

AI Market Share Tracker

Name: AI Market Share Tracker — Consumer Chatbot Traffic & Enterprise LLM Spend Share
Creator: Aston Reach
Published: 2026-08-11

Consumer AI chatbot traffic and enterprise LLM spend are moving in opposite directions. We track both, every quarter, so you can see where the market actually is — not where the headlines say it is.

By Chris Metcalf · LinkedIn Founder & Director, Aston Reach

Last updated: 11 August 2026

Next refresh: October 2026

Key facts, at a glance

ChatGPT (OpenAI) leads consumer AI chatbot traffic with 53.9% share as of May 2026 — down from roughly 87% in early 2025.
Anthropic's Claude leads enterprise LLM spend with 40% share in Q1 2026, up from around 16% two years earlier — overtaking OpenAI (27%).
Google's Gemini holds 27.9% of consumer chatbot traffic and 21% of enterprise LLM spend.
The company winning consumer mindshare is no longer the company winning enterprise budget.

Most of the public conversation about "who's winning" in AI treats consumer chatbot usage as a proxy for the whole market. It isn't. The provider enterprises are actually paying to run their AI workloads on has moved in a different direction entirely — and if you're making a vendor decision based on which chatbot gets the most headlines, you're looking at the wrong number.

Consumer

Consumer AI chatbot traffic share

ChatGPT remains the default consumer AI chatbot by a wide margin, but its dominance has eroded sharply. In early 2025, OpenAI held an estimated 87% of consumer chatbot traffic. As of the latest reading, that figure has fallen to 53.9% — with Google's Gemini the clearest beneficiary, now at 27.9%.

Consumer AI chatbot traffic share — as of May 2026
Provider	Traffic share
ChatGPT (OpenAI)	53.9%
Gemini (Google)	27.9%
Claude (Anthropic)	9.2%
Others	9.0%

Source: Similarweb, consumer chatbot web traffic, May 2026 reading.

Enterprise

Enterprise LLM spend share

Enterprise budget tells a different story. Anthropic's Claude has grown from roughly 16% of enterprise LLM spend two years ago to 40% in Q1 2026 — overtaking OpenAI, which has fallen to 27%. Google's Gemini holds 21% of enterprise spend, ahead of its consumer position relative to Claude.

Enterprise LLM spend share — Q1 2026
Provider	Spend share
Claude (Anthropic)	40%
ChatGPT (OpenAI)	27%
Gemini (Google)	21%
Others	12%

Source: Menlo Ventures 2026 State of Enterprise AI; Ramp AI Index, Q1 2026.

What This Means

Consumer mindshare and enterprise trust are no longer the same contest

OpenAI still wins the front page. Anthropic wins the procurement conversation. For leadership teams choosing an AI vendor, that split matters more than either headline number on its own — brand familiarity is not the same signal as what technical and security teams are actually choosing to build on and pay for at scale.

This is exactly the kind of decision we help CIOs, CTOs and CFOs work through: not which tool is winning the news cycle, but which platform choice, adoption approach and governance model will actually deliver measurable value in your organisation — tool agnostic, structured, and tied to real outcomes.

Previous quarterly updates

Q3 2026 update — Anthropic overtakes OpenAI in enterprise spend August 2026

Methodology & Sources

How this tracker is built

Consumer AI chatbot traffic share is sourced from Similarweb's web traffic estimates for the leading consumer chatbot properties (chatgpt.com, gemini.google.com, claude.ai and others), reflecting relative share of visits.

Enterprise LLM spend share is sourced from the Menlo Ventures annual State of Enterprise AI report and the Ramp AI Index, which tracks actual enterprise card and API spend on LLM providers.

This page is refreshed quarterly with the latest available reading from each source. Each quarter's snapshot is also archived at a dated URL so you can see how the picture has shifted over time.