Google: Gemini 3.1 Pro Preview Custom Tools vs OpenAI: GPT-5.4 Pro
Side-by-side comparison of Google: Gemini 3.1 Pro Preview Custom Tools and OpenAI: GPT-5.4 Pro. Compare pricing, context window, capabilities, and find out which is better for your workflow.
Verdict
strong confidenceOpenAI: GPT-5.4 Pro leads overall
OpenAI: GPT-5.4 Pro leads clearly, winning on 3 of 5 dimensions. Choose OpenAI: GPT-5.4 Pro unless your workflow specifically requires Google: Gemini 3.1 Pro Preview Custom Tools's advantages.
Best for with Google: Gemini 3.1 Pro Preview Custom Tools
Best for with OpenAI: GPT-5.4 Pro
Side-by-side
Technical specifications
| Google: Gemini 3.1 Pro Preview Custom Tools | OpenAI: GPT-5.4 Pro | |
|---|---|---|
| Provider | OpenAI | |
| Input price | $2/M | $30/M |
| Output price | $12/M | $180/M |
| Context window | 1.0M | 1.1M |
| Max output | 66K | 128K |
| Capabilities | Tool useVisionAudioReasoning | Tool useVisionReasoning |
| Released | Feb 25, 2026 | Mar 5, 2026 |
Scoring breakdown
How each dimension compares
Price
Google: Gemini 3.1 Pro Preview Custom Tools leadsGoogle: Gemini 3.1 Pro Preview Custom Tools
$2/M in / $12/M out
OpenAI: GPT-5.4 Pro
$30/M in / $180/M out
Context Window
OpenAI: GPT-5.4 Pro leadsGoogle: Gemini 3.1 Pro Preview Custom Tools
1.0M
OpenAI: GPT-5.4 Pro
1.1M
Capabilities
Google: Gemini 3.1 Pro Preview Custom Tools leadsGoogle: Gemini 3.1 Pro Preview Custom Tools
4/4 features
OpenAI: GPT-5.4 Pro
3/4 features
Max Output
OpenAI: GPT-5.4 Pro leadsGoogle: Gemini 3.1 Pro Preview Custom Tools
66K
OpenAI: GPT-5.4 Pro
128K
Release Date
OpenAI: GPT-5.4 Pro leadsGoogle: Gemini 3.1 Pro Preview Custom Tools
Feb 25, 2026
OpenAI: GPT-5.4 Pro
Mar 5, 2026
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