Last Updated: July 20, 2026
Our team tracked generative AI chatbot market share across every major US platform. For this study, “generative AI chatbot” refers to LLM-based web and mobile applications that the public uses to seek answers or create content. All figures are estimated based on monthly active users across US web and mobile platforms.
For the purposes of this study, the term “generative AI chatbot” refers to LLM-based web & mobile applications used by the public to seek answers or create content.
Top Generative AI Chatbots by Market Share – July 2026
| Rank | Generative AI Chatbot | Description | Included LLMs | AI Chatbot Market Share |
| 1 | ChatGPT | General-purpose AI chatbot | GPT-5.5 Instant,GPT-5.5 Thinking,GPT-5.5 Pro | 52.7% |
| 2 | Google Gemini | General-purpose AI assistant | Gemini 3.5 Flash, Gemini 3.1 Pro, Gemini 3 Deep Think | 27.7% |
| 3 | Claude AI | Business-focused AI assistant | Claude Opus 4.8, Claude Sonnet 4.6, Claude Haiku 4.5 Fable 5Mythos 5 | 10.3% |
| 4 | Grok | General-purpose AI assistant | Grok 4.3, V9-Medium, Grok Build | 2.8% |
| 5 | Perplexity | Accuracy-focused AI chatbot | Sonar, Sonar Pro, Sonar Reasoning Pro, Kimi K2.5 | 2.0% |
| 6 | Microsoft Copilot | General-purpose AI assistant | GPT-5.5, GPT-5.3, Claude Sonnet 4.6 | 1.3% |
| 7 | DeepSeek | General-purpose AI assistant | DeepSeek V4 (Pro/Flash), DeepSeek V3.2 | 0.4% |
| 8 | Meta AI | Social platform-embedded AI assistant | Muse Spark | 0.05% |
ChatGPT still dominates US usage, holding more share than every other chatbot combined. Google Gemini and Claude follow at a distance; together, the top three account for the overwhelming majority of the market, a measure of how concentrated AI usage remains despite the steady flow of new entrants. Grok has maintained relatively steady usage, outpacing Perplexity, but it is still far behind the major platforms.
The defining trend is gradual fragmentation: ChatGPT’s lead, though still commanding, has narrowed as users adopt more tools. If the pattern holds, its share looks set to continue declining. However, it is unlikely to collapse; some projections have ChatGPT stabilizing closer to the 50–55% range as casual users migrate, but its core base stays put.
The Fastest Growing Generative AI Chatbots
The following table ranks generative AI chatbots by their quarterly change in estimated users.
Fastest Growing Generative AI Chatbots – July 2026
| Rank | Generative AI Chatbot | Estimated Quarterly User Growth |
| 1 | Claude AI | +14% ▲ |
| 2 | Google Gemini | +12% ▲ |
| 3 | DeepSeek | +7% ▲ |
| 4 | ChatGPT | +4% ▲ |
| 5 | Grok | +4% ▲ |
| 6 | Perplexity | +4% ▲ |
| 7 | Microsoft Copilot | +3% ▲ |
| 8 | Meta AI | Verified numbers not available |
Most growth this quarter was driven by product launches, the kind of momentum that tends to plateau once the launch cycle ends.
Claude led the pack, with growth anchored by Opus 4.8, which landed May 28, and by deepening enterprise trust. The June 9 launch of the higher-tier Claude Fable 5 and Claude Mythos 5 added strong growth, drawing a wave of new users. Although Anthropic disabled both on June 12 under a US export-control directive, both were reinstated as of July 1. Anthropic also crossed a notable threshold this quarter: it overtook OpenAI in annualized revenue, reaching $47 billion in ARR.
Google Gemini surged on the back of Google I/O in May, where Google confirmed 900 million monthly active users, up from 750 million at the end of 2025. AI Mode crossed 100 million users in the US and India, and the announcement that Gemini would power a rebuilt Siri on 1.4 billion iPhones extended the platform’s reach well beyond its standalone app.
DeepSeek posted the quarter’s most notable growth relative to its size, driven by the April 24 launch of DeepSeek V4, an open-source frontier model priced as low as $0.14 per million tokens. That cost-efficiency is pulling in developers and organizations priced out of proprietary alternatives.
ChatGPT’s +4% growth was anchored by the rollout of GPT-5.5 as the new default model, which helped retain its core user base even as overall market share declined. Grok and Perplexity each matched that rate, though both remain well behind the top platforms in absolute scale. Microsoft Copilot posted the quarter’s slowest growth at +3%, but its trajectory improved over the period, with the Build conference closing the quarter on a strong note as Scout launched, Copilot Cowork became available, and Claude was added as a selectable model in Copilot Chat.
Meta AI’s numbers remain unverifiable as a standalone chatbot and are excluded from the ranked table. Its user count spans passive social-feed interactions across WhatsApp, Instagram, and Facebook, which are not comparable to active chatbot sessions.
ChatGPT Market Share: 2026 Trend
Below is the YTD 2026 trend for ChatGPT market share in the generative AI chatbot space. As the pioneer and market leader, ChatGPT has the most to lose, and it has given up some ground this year to a growing field of smaller competitors. The launch of GPT-5.5 as the new default model may limit further losses in the months ahead.
NOTE: ChatGPT’s market share includes that of Bing’s Copilot product, as they both use the same underlying system; the difference is only that Microsoft Copilot personalizes ChatGPT based on user data in the Microsoft ecosystem.
| Month | ChatGPT Market Share |
| January 2026 | 67.1% |
| February 2026 | 65.7% |
| March 2026 | 62.6% |
| April 2026 | 61.8% |
| May 2026 | 59.1% |
| June 2026 | 58.6% |
| July 2026 | 52.7% |
Microsoft Copilot Market Share: 2026 Trend
Microsoft Copilot’s market share followed a dip-and-recovery arc through the first half of 2026, slipping from 1.15% in January to 1.11% in March before climbing back to 1.25% by June and climbing slightly to 1.3% in the beginning of July. The first-quarter decline coincided with a difficult stretch: enterprise adoption drew analyst scrutiny.
In March, Microsoft restructured its AI organization, moving Copilot’s product lead to in-house model development. The rebound was driven by a consistent run of product launches, culminating at June’s Build conference, where Scout was released, Copilot Cowork became available, and Anthropic’s Claude was added as a selectable model in Copilot Chat.
| Month | Copilot Market Share |
| January 2026 | 1.15% |
| February 2026 | 1.13% |
| March 2026 | 1.11% |
| April 2026 | 1.17% |
| May 2026 | 1.21% |
| June 2026 | 1.25% |
| July 2026 | 1.30% |
Google Gemini Market Share: 2026 Trend
Below you will find the YTD 2026 trend for Google Gemini’s market share. It opened the year roughly flat, then drifted down through the first quarter and into April. Share recovered in May, fueled by Google I/O on May 19, where Google introduced Gemini Spark, an always-on agentic assistant, and cut the entry price of its AI Ultra tier to $99.99 a month to broaden access. Gemini made a notable leap from June to July, most likely due to its integration into Android devices and Gmail.
| Month | Gemini Market Share |
| January 2026 | 14.0% |
| February 2026 | 14.1% |
| March 2026 | 13.8% |
| April 2026 | 13.2% |
| May 2026 | 13.5% |
| June 2026 | 13.3% |
| July 2026 | 27.7% |
Perplexity Market Share: 2026 Trend
Perplexity gave up ground through early 2026 as larger general-purpose assistants folded answer and search features into their own apps, eroding the advantage of a standalone answer engine. The decline ran steepest in the first quarter and flattened by late spring, leaving Perplexity’s consumer share well below where it began the year, even as its enterprise and revenue base has kept growing.
| Month | Perplexity Market Share |
| January 2026 | 5.3% |
| February 2026 | 4.0% |
| March 2026 | 3.4% |
| April 2026 | 2.8% |
| May 2026 | 2.7% |
| June 2026 | 2.6% |
| July 2026 | 2.00% |
ClaudeAI Market Share: 2026 Trend
Claude’s share entered 2026 at 8.5% and climbed through spring into early summer, reaching 11.5% by June, before dipping slightly to 10.3% in July.
Three forces drove gains:
- A wave of younger first-time AI users: over half of the platform’s users are 18 to 24. Most of that growth represents new users entering the market rather than existing users switching platforms.
- Enterprise adoption that now spans the majority of the Fortune 100 companies.
- A developer base built around Claude Code, which has crossed $2.5 billion in annualized revenue.
| Month | Claude AI Market Share |
| January 2026 | 8.50% |
| February 2026 | 9.60% |
| March 2026 | 10.30% |
| April 2026 | 10.90% |
| May 2026 | 11.25% |
| June 2026 | 11.50% |
| July 2026 | 10.30% |
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