[2026 Latest] Workplace AI Enters an Era of "Big Three" — ChatGPT 60.8% vs. Gemini 49.7% vs. Copilot 41.8%, Claude at 7.8%

The end of ChatGPT's dominance, or its continuation? A recent survey conducted by Surista Inc. (Tokyo) among 400 company employees nationwide revealed the tool usage share among 153 individuals who use AI for their work. ChatGPT secured the top spot with 60.8%, while Google Gemini (49.7%) and Microsoft Copilot (41.8%) closely followed. A significant gap emerged between these and Claude (7.8%) and Perplexity (6.5%), clearly showing a landscape where the "free big three" dominate workplace AI. Furthermore, among small and medium-sized enterprises (up to 100 employees), Gemini (56.1%) is closing in on ChatGPT (58.5%), revealing a structure where the leading player changes depending on company size.

Three Key Topics

Usage Rate of the Big Three: ChatGPT 60.8% (n=93) / Gemini 49.7% (n=76) / Copilot 41.8% (n=64) — A large gap from 4th place and below.

49.0% of AI users use multiple tools concurrently, averaging 1.82 tools — Shifting from "single choice" to an era of "differential use."

Larger companies show higher Copilot usage rates — The impact of Microsoft 365 integration is significant.

1. Overall AI Tool Share (Based on 153 AI Users)

ChatGPT: 93 users / 60.8% Google Gemini: 76 users / 49.7% Microsoft Copilot: 64 users / 41.8% Claude: 12 users / 7.8% Perplexity: 10 users / 6.5% Notion AI: 6 users / 3.9% Others: Below 4%

The combined share of the big three is overwhelming. The workplace AI market is effectively divided into three by ChatGPT, Gemini, and Copilot.

2. Distribution of Concurrent Tool Usage

Using only one tool: 78 users / 51.0% Using two tools concurrently: 52 users / 34.0% Using three tools concurrently: 12 users / 7.8% Using four or more tools concurrently: 11 users / 7.2%

49.0% of AI users use multiple tools concurrently. The average is 1.82 tools, indicating that differential use according to work scenarios is becoming established.

3. Tool Share by Company Size: Gemini Narrows the Gap in SMEs

Small and Medium Enterprises (up to 100 employees, n=41): ChatGPT 58.5% / Gemini 56.1% / Copilot 22.0% Mid-sized Enterprises (101-1,000 employees, n=52): ChatGPT 65.4% / Gemini 48.1% / Copilot 50.0% Large Enterprises (1,001+ employees, n=60): ChatGPT 58.3% / Gemini 46.7% / Copilot 48.3%

In SMEs, many companies use Google Workspace, leading to Gemini's close competition, while in large enterprises, Copilot is strong due to Microsoft 365 integration. The changing leading player by company size is a major finding of this survey.

4. Tool Share by Industry (Based on AI Users)

IT & Telecommunications (n=25): ChatGPT 60.0% / Gemini 48.0% / Copilot 52.0% Manufacturing (n=36): ChatGPT 63.9% / Gemini 52.8% / Copilot 41.7% Distribution & Retail (n=21): ChatGPT 61.9% / Gemini 38.1% / Copilot 42.9% Education & Human Resources (n=10): ChatGPT 70.0% / Gemini 60.0% / Copilot 80.0% Public & Administration (n=5): ChatGPT 40.0% / Gemini 40.0% / Copilot 40.0%

Supervisor's Comment

The establishment of the big three system is evidence that the discussion has shifted from tool selection to "operational design for differential use." The average of 1.82 tools is a sign of "optimization according to work granularity." In the future, designing an "organizational tool stack" will create competitive advantage rather than selecting tools individually.

Detailed Report (Full Cross-Tabulations by Size/Industry/Use Case)

The "AI Tool Share 2026 Complete Edition" article on Doyamarke features full cross-tabulations, graphs, and competitor comparisons.

👉 https://doyamarke.surisuta.jp/notes/pr04-tool-share-report

Survey Materials (PDF with Figures and Tables) Download

👉 https://doyamarke.surisuta.jp/download/pr04-tool-share

Citation Guidelines

When citing the figures and tables from this release, please clearly state the source as "Surista Inc. 'Corporate Generative AI Utilization Status Survey 2026' (n=400)" and include a link to the Doyamarke article URL above.

Survey Overview

Survey Name: Corporate Generative AI Utilization Status Survey Target: Company employees nationwide (full-time, contract, temporary, management, civil servants) Valid Responses: 400 Survey Period: May 2026 Survey Method: Internet survey (Freeasy) Implementing Body: Surista Inc.

About Surista Inc.

Surista Inc. operates "Doyamarke," a media platform that supports companies' marketing operations with AI, under the theme of "Making Marketing with AI a Matter of Course." We provide end-to-end support for AI x marketing implementation and communication, including assistance with article creation, document creation, and communication strategy design. URL: https://surista.jp/