Google: Gemini 3.1 Pro Preview Custom Tools vs Google: Gemini 3.1 Pro Preview: Which AI Model Is Better?
Updated March 24, 2026· Based on independent benchmark data
Quick Verdict
Google: Gemini 3.1 Pro Preview Custom Tools and Google: Gemini 3.1 Pro Preview are virtually tied on intelligence (57.2 vs 57.2).
Head-to-Head Comparison
| Metric | Google: Gemini 3.1 Pro Preview Custom Tools | Google: Gemini 3.1 Pro Preview |
|---|---|---|
| Intelligence Score | 57.2 | 57.2 |
| Coding Score | 55.5 | 55.5 |
| Math Score | N/A | N/A |
| Speed (tok/s) | 117 tok/s | 117 tok/s |
| Latency (TTFT) | 21.91s | 21.91s |
| Input Price / 1M tokens | $2.00 | $2.00 |
| Output Price / 1M tokens | $12 | $12 |
| Context Window | 1.0M | 1.0M |
| Max Output Tokens | 66K | 66K |
| Input Modalities | Text + Audio + Image + Video + File | Audio + File + Image + Text + Video |
| Output Modalities | Text | Text |
| Free Tier | No | No |
Detailed Analysis
Intelligence & Quality
Google: Gemini 3.1 Pro Preview Custom Tools and Google: Gemini 3.1 Pro Preview perform similarly on overall intelligence, scoring 57.2 and 57.2 respectively. Their coding capabilities are closely matched (55.5 vs 55.5).
Speed & Latency
Both models deliver similar output speeds: Google: Gemini 3.1 Pro Preview Custom Tools at 117 tok/s and Google: Gemini 3.1 Pro Preview at 117 tok/s. Time to first token is 21.91s for Google: Gemini 3.1 Pro Preview vs 21.91s for Google: Gemini 3.1 Pro Preview Custom Tools, which affects perceived responsiveness in interactive applications.
Pricing
Google: Gemini 3.1 Pro Preview is more affordable at $2.00/1M input tokens ($12/1M output), while Google: Gemini 3.1 Pro Preview Custom Tools costs $2.00/1M input ($12/1M output). For a typical workload of 100 requests per day at 2,000 tokens each, Google: Gemini 3.1 Pro Preview Custom Tools would cost approximately $12.00/month vs $12.00/month for Google: Gemini 3.1 Pro Preview in input costs alone.
Context Window
Both models support the same context window of 1.0M tokens (approximately 524 pages of text).
Frequently Asked Questions
Is Google: Gemini 3.1 Pro Preview Custom Tools better than Google: Gemini 3.1 Pro Preview for coding?
Google: Gemini 3.1 Pro Preview Custom Tools and Google: Gemini 3.1 Pro Preview have identical coding scores of 55.5.
Which is cheaper, Google: Gemini 3.1 Pro Preview Custom Tools or Google: Gemini 3.1 Pro Preview?
Google: Gemini 3.1 Pro Preview is cheaper at $2.00/1M input tokens vs $2.00/1M for Google: Gemini 3.1 Pro Preview Custom Tools.
Is Google: Gemini 3.1 Pro Preview Custom Tools faster than Google: Gemini 3.1 Pro Preview?
Both models have similar output speeds of around 117 tok/s.
Can Google: Gemini 3.1 Pro Preview Custom Tools process images?
Yes, Google: Gemini 3.1 Pro Preview Custom Tools supports image input. Google: Gemini 3.1 Pro Preview also supports images.
Which has a larger context window, Google: Gemini 3.1 Pro Preview Custom Tools or Google: Gemini 3.1 Pro Preview?
Both models have the same context window of 1.0M tokens.
Should I use Google: Gemini 3.1 Pro Preview Custom Tools or Google: Gemini 3.1 Pro Preview?
Both models perform similarly on intelligence benchmarks. Choose based on specific needs: pricing, speed, context window, or provider ecosystem.
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Benchmark data by Artificial Analysis
Data last synced: March 24, 2026