Last Updated: August 3, 2026
Our team tracked the generative AI chatbot market share across major AI platforms. 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 U.S. web and mobile platforms.
The Top Generative AI Chatbots by Market Share – August 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 | 51.3% |
| 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, Claude Fable 5, Claude Mythos 5 | 10.3% |
| 4 | Other | Specialized, regional, and emerging AI chatbots | Mistral Le Chat (Magistral/Mistral Medium), Qwen Chat (Qwen 3), Amazon Rufus, Character.AI | 4.2% |
| 5 | Grok | General-purpose AI assistant | Grok 4.3, V9-Medium, Grok Build | 2.8% |
| 6 | Perplexity | Accuracy-focused AI chatbot | Sonar, Sonar Pro, Sonar Reasoning Pro, Kimi K2.5 | 2.0% |
| 7 | Microsoft Copilot | General-purpose AI assistant | GPT-5.5, GPT-5.3, Claude Sonnet 4.6 | 1.3% |
| 8 | DeepSeek | General-purpose AI assistant | DeepSeek V4 (Pro/Flash), DeepSeek V3.2 | 0.4% |
| 9 | Meta AI | Social platform-embedded AI assistant | Muse Spark | 0.1% |
ChatGPT still dominates U.S. usage, holding a larger share than all other chatbots 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 keep declining. However, it is unlikely to collapse. Some projections have ChatGPT stabilizing close to the 50–55% range as casual users migrate, while 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. Most of this quarter’s growth was driven by product launches, but that momentum tends to plateau once the launch cycle ends.
Fastest Growing Generative AI Chatbots – July 2026
| Rank | Generative AI Chatbot | Estimated Quarterly User Growth |
| 1 | Google Gemini | +17% ▲ |
| 2 | Claude AI | +14% ▲ |
| 3 | DeepSeek¹ | +7% ▲ |
| 4 | ChatGPT | +4% ▲ |
| 5 | Grok² | +4% ▲ |
| 6 | Perplexity² | +4% ▲ |
| 7 | Microsoft Copilot | +3% ▲ |
| 8 | Meta AI³ | Verified numbers not available |
¹DeepSeek posted the quarter’s most notable growth relative to its size, driven by the April 24 launch of DeepSeek V4, an affordable open-source frontier model. That cost efficiency is attracting developers and organizations priced out of proprietary alternatives.
²Grok and Perplexity remain well behind the top platforms in absolute scale.
³Meta AI’s numbers remain unverifiable as a standalone chatbot. 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
The table below shows ChatGPT’s year-to-date 2026 market-share trend in the generative AI chatbot space. As the pioneer and market leader, ChatGPT has the most ground to lose, and its share has declined as smaller competitors attract more users. Even so, the platform grew 4% this quarter, supported by the rollout of GPT-5.5 Instant as the default model. The launch may help ChatGPT retain its core user base and limit further market-share 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 | 51.3% |
Microsoft Copilot Market Share: 2026 Trend
Microsoft Copilot’s market share followed a dip-and-recovery arc through the first half of 2026. Although Copilot posted the quarter’s slowest growth at +3%, its trajectory improved over the period. Momentum picked up in early summer, with Scout launching at Build, Copilot Cowork reaching general availability, and Claude becoming available in select Copilot experiences.
| 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
Google Gemini opened the year roughly flat. In May, 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 then made a notable leap from June to July, most likely due to its integration into Android devices and Gmail. As of July 2026, Google Gemini has 950 million monthly active users.
| 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 has continued, 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 dipped from 11.5% in June to 10.3% in July. The June 9 launch of Claude Fable 5 and Claude Mythos 5 helped support momentum, although Anthropic disabled both models on June 12 under a U.S. export-control directive. Fable 5 access was restored on July 1, while Mythos 5 remains restricted.
The July dip may reflect intensifying competition rather than weakening demand. As ChatGPT, Gemini, Grok, and other AI assistants release new models and capabilities in quick succession, users may be experimenting across multiple platforms rather than focusing on a single chatbot.
| 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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