Gemini 3.1 Pro is Google’s latest frontier model. GPT-5.5 is OpenAI’s refined workhorse. This comparison examines where each excels.
Overview
Gemini 3.1 Pro launched with a 2M token context window and native multimodal (text, image, audio, video). GPT-5.5 offers reduced hallucination and improved agentic coding.
| Spec | Gemini 3.1 Pro | GPT-5.5 |
|---|---|---|
| Input Price | $2/M | $1.75/M |
| Output Price | $12/M | $14/M |
| Context | 2M tokens | 1M tokens |
| Multimodal | Native (text/image/audio/video) | Text, image |
Which to Choose
Gemini wins for multimodal and long-context tasks. GPT-5.5 wins for coding and structured API outputs. For most enterprises, GPT-5.5 is more practical for text workloads; Gemini for research and media analysis.
Related: AI Model Comparison 2026 · 3-Way Showdown
