Gemini 3 Pro is Google’s flagship frontier model for high-precision multimodal reasoning, combining strong performance across text, image, video, audio, and code with a 1M-token context window. Reasoning Details must be preserved when using…
Model details →Google: Gemini 3 Pro Preview vs OpenAI: GPT-5.5
Google: Gemini 3 Pro Preview wins on 2 of 6 axes — pricing and capability skew in its favour for most workloads.
GPT-5.5 is OpenAI’s frontier model designed for complex professional workloads, building on GPT-5.4 with stronger reasoning, higher reliability, and improved token efficiency on hard tasks. It features a 1M+ token...
Model details →Side-by-side comparison
| Capability | Google: Gemini 3 Pro Preview | OpenAI: GPT-5.5 | Winner |
|---|---|---|---|
| Context window Maximum number of input tokens the model can attend to in a single request. | 1.0M | 1.1M | 🏆 OpenAI: GPT-5.5 |
| Input price (per 1M) Cost per million input tokens billed by the provider. | $2.00 | $5.00 | 🏆 Google: Gemini 3 Pro Preview |
| Output price (per 1M) Cost per million output tokens billed by the provider. | $12.00 | $30.00 | 🏆 Google: Gemini 3 Pro Preview |
| Tool / function calling First-class support for emitting structured tool calls. | Yes | Yes | Tie |
| Vision input Accepts image inputs alongside text. | Yes | Yes | Tie |
| Reasoning mode Internal chain-of-thought / extended-thinking support. | Yes | Yes | Tie |
Frequently asked questions
Is Google: Gemini 3 Pro Preview better than OpenAI: GPT-5.5?
Google: Gemini 3 Pro Preview wins on 2 of 6 axes — pricing and capability skew in its favour for most workloads.
What's the price difference between Google: Gemini 3 Pro Preview and OpenAI: GPT-5.5?
Input: $2.00 vs $5.00 per 1M tokens. Output: $12.00 vs $30.00 per 1M tokens.
What context windows do Google: Gemini 3 Pro Preview and OpenAI: GPT-5.5 support?
Google: Gemini 3 Pro Preview supports up to 1.0M tokens. OpenAI: GPT-5.5 supports up to 1.1M tokens.
Do both Google: Gemini 3 Pro Preview and OpenAI: GPT-5.5 support tool calling?
Google: Gemini 3 Pro Preview: yes. OpenAI: GPT-5.5: yes.
Compare Google: Gemini 3 Pro Preview with other models
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