ChatGPT vs Gemini: 2025 Traffic Trends Reveal Why OpenAI Sounded the Alarm

As the competition in the AI space intensifies, ChatGPT and Google’s Gemini have clearly emerged as the two dominant consumer-facing platforms. OpenAI’s chatbot enjoyed a massive early advantage, having popularized generative AI well before major rivals entered the scene. Google, by contrast, stumbled out of the gate with early missteps such as the Bard rollout and image generation controversies, but Gemini has since rebounded and gained significant traction.

New traffic data from 2025 suggests that Gemini’s recovery is more than just cosmetic. According to website analytics, Google’s AI platform has been steadily cutting into ChatGPT’s dominance, largely driven by Google’s unparalleled distribution ecosystem across Search, Android, and its broader services. This shift appears to be reshaping the competitive balance between the two AI leaders.

Similarweb recently shared global generative AI website traffic data on X, tracking changes over the past 12 months. The figures show that ChatGPT’s share of worldwide AI web traffic declined sharply, falling from 86.7 percent at the start of the year to 64.5 percent by the end of 2025. While ChatGPT remains the market leader, the downward trend highlights growing competitive pressure.

During the same period, Gemini saw rapid growth, expanding its global traffic share from just 5.7 percent to 21.5 percent. Other platforms also made modest gains, with Grok and DeepSeek capturing 3.7 percent and 3.4 percent respectively, despite having little to no presence before 2025. Anthropic’s Claude posted a small increase, while Microsoft’s Copilot remained largely flat. However, the data is most significant for OpenAI and Google, as both companies aggressively drive users to their AI websites, unlike rivals that rely more heavily on app-based access or deep platform integrations.