Gemini 3.1 Pro Preview is Google’s frontier reasoning model, delivering enhanced software engineering performance, improved agentic reliability, and more efficient token usage across complex workflows. Building on the multimodal foundation.…
Model details →Google: Gemini 3.1 Pro Preview vs OpenAI: GPT-5.6 Terra
OpenAI: GPT-5.6 Terra wins on 3 of 6 axes — pricing and capability skew in its favour for most workloads.
GPT-5.6 Terra is a balanced model in OpenAI's GPT-5.6 series, positioned between the flagship Sol tier and the cost-efficient Luna tier. It is suited for everyday coding, reasoning, and agentic...
Model details →Side-by-side comparison
| Capability | Google: Gemini 3.1 Pro Preview | OpenAI: GPT-5.6 Terra | Winner |
|---|---|---|---|
| Context window Maximum number of input tokens the model can attend to in a single request. | 1.0M | 1.1M | 🏆 OpenAI: GPT-5.6 Terra |
| Input price (per 1M) Cost per million input tokens billed by the provider. | $2.00 | $1.00 | 🏆 OpenAI: GPT-5.6 Terra |
| Output price (per 1M) Cost per million output tokens billed by the provider. | $12.00 | $6.00 | 🏆 OpenAI: GPT-5.6 Terra |
| 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 3.1 Pro Preview better than OpenAI: GPT-5.6 Terra?
OpenAI: GPT-5.6 Terra wins on 3 of 6 axes — pricing and capability skew in its favour for most workloads.
What's the price difference between Google: Gemini 3.1 Pro Preview and OpenAI: GPT-5.6 Terra?
Input: $2.00 vs $1.00 per 1M tokens. Output: $12.00 vs $6.00 per 1M tokens.
What context windows do Google: Gemini 3.1 Pro Preview and OpenAI: GPT-5.6 Terra support?
Google: Gemini 3.1 Pro Preview supports up to 1.0M tokens. OpenAI: GPT-5.6 Terra supports up to 1.1M tokens.
Do both Google: Gemini 3.1 Pro Preview and OpenAI: GPT-5.6 Terra support tool calling?
Google: Gemini 3.1 Pro Preview: yes. OpenAI: GPT-5.6 Terra: yes.
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