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: o4 Mini
OpenAI: o4 Mini wins on 2 of 6 axes — pricing and capability skew in its favour for most workloads.
OpenAI o4-mini is a compact reasoning model in the o-series, optimized for fast, cost-efficient performance while retaining strong multimodal and agentic capabilities. It supports tool use and demonstrates competitive reasoning and coding p…
Model details →Side-by-side comparison
| Capability | Google: Gemini 3 Pro Preview | OpenAI: o4 Mini | Winner |
|---|---|---|---|
| Context window Maximum number of input tokens the model can attend to in a single request. | 1.0M | 200K | 🏆 Google: Gemini 3 Pro Preview |
| Input price (per 1M) Cost per million input tokens billed by the provider. | $2.00 | $1.10 | 🏆 OpenAI: o4 Mini |
| Output price (per 1M) Cost per million output tokens billed by the provider. | $12.00 | $4.40 | 🏆 OpenAI: o4 Mini |
| 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: o4 Mini?
OpenAI: o4 Mini 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: o4 Mini?
Input: $2.00 vs $1.10 per 1M tokens. Output: $12.00 vs $4.40 per 1M tokens.
What context windows do Google: Gemini 3 Pro Preview and OpenAI: o4 Mini support?
Google: Gemini 3 Pro Preview supports up to 1.0M tokens. OpenAI: o4 Mini supports up to 200K tokens.
Do both Google: Gemini 3 Pro Preview and OpenAI: o4 Mini support tool calling?
Google: Gemini 3 Pro Preview: yes. OpenAI: o4 Mini: yes.