Google: Gemini 3.1 Pro Preview vs OpenAI: GPT-5.5
Side-by-side comparison — pricing, context window, capabilities, and live leaderboard data.
Key differences
- Google: Gemini 3.1 Pro Preview is 60% cheaper per 1K input tokens than OpenAI: GPT-5.5 ($0.0020 vs $0.0050).
- Google: Gemini 3.1 Pro Preview is built by Google; OpenAI: GPT-5.5 is built by OpenAI.
Specifications
| Google: Gemini 3.1 Pro Preview | OpenAI: GPT-5.5 | |
|---|---|---|
| Provider | OpenAI | |
| Context window | 1049K | 1050K |
| Max output tokens | 8192 | 8192 |
| Input price / 1K tokens | $0.0020 | $0.0050 |
| Output price / 1K tokens | $0.0120 | $0.0300 |
| Vision support | Yes | Yes |
| Function calling | No | No |
| License | Proprietary | Proprietary |
About Google: Gemini 3.1 Pro Preview
US·ClosedGemini 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...
View Google: Gemini 3.1 Pro Preview reliability and benchmark history →About OpenAI: GPT-5.5
US·ClosedGPT-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...
View OpenAI: GPT-5.5 reliability and benchmark history →Try them yourself
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