Google’s Gemini 3 and OpenAI’s GPT-5.1 are two top contenders in the AI chatbot market. Both models offer improved capabilities, but they cater to different needs.
Gemini 3 is Google’s “most intelligent model yet,” building on agent-y, multimodal ideas from previous versions. It excels at reasoning, handling long-context multimodal work, and planning ahead. Gemini 3 also powers features like Antigravity developer platform and Deep Think mode for tackling challenging problems.
In contrast, GPT-5.1 is more conversational, with direct and enjoyable interactions. Instant and Thinking adjust the “thinking” level based on questions, following instructions consistently, and allowing users to customize tone and personality.
Key differences:
* Price: Gemini 3 Pro costs around $19.99/month, while GPT-5.1-related plans range from approximately $20/month.
* Model rankings: Gemini 3 leads with a score of 1324, followed by GPT-5.1 with a score of 1222, according to LMArena rankings.
Gemini 3 outperforms in multi-modal and long-context capabilities, supporting massive contexts, images, text, and code seamlessly. It introduces Deep Think mode for higher-order reasoning and planning across domains.
GPT-5.1 focuses on conversational quality and reliability, with strong performance in pure text generation and instruction following. However, it doesn’t match Gemini 3’s breadth in modality or long-form reasoning.
Ultimately, the choice between Gemini 3 and GPT-5.1 depends on your specific needs. If you prioritize multi-modal capabilities and grander tasks, Gemini 3 is the better choice. For conversational interactions and reliability, GPT-5.1 might be more suitable.
Source: https://mashable.com/article/gemini-3-vs-chat-gpt-here-is-how-they-compare