Gemini 1.0 Pro vs Gemini 3.1 Pro Preview: Which AI Model Is Better?

Updated March 26, 2026· Based on independent benchmark data

Quick Verdict

Gemini 3.1 Pro Preview leads in intelligence with a score of 57.2 vs 8.5. For speed, Gemini 3.1 Pro Preview wins at 113 tok/s vs 0 tok/s.

Head-to-Head Comparison

Metric	Gemini 1.0 Pro	Gemini 3.1 Pro Preview
Intelligence Score	8.5	57.2
Coding Score	N/A	55.5
Math Score	N/A	N/A
Speed (tok/s)	0 tok/s	113 tok/s
Latency (TTFT)	0.00s	23.84s
Input Price / 1M tokens	Free	$2.00
Output Price / 1M tokens	Free	$12
Context Window	33K	1.0M
Max Output Tokens	N/A	N/A
Input Modalities	Text	Audio + File + Image + Text + Video

Detailed Analysis

Intelligence & Quality

Gemini 3.1 Pro Preview outperforms Gemini 1.0 Pro on the intelligence index with a score of 57.2 compared to 8.5.

Speed & Latency

Gemini 3.1 Pro Preview generates output significantly faster at 113 tok/s compared to Gemini 1.0 Pro's 0 tok/s, making it Infinityx faster for streaming responses. Time to first token is 0.00s for Gemini 1.0 Pro vs 23.84s for Gemini 3.1 Pro Preview, which affects perceived responsiveness in interactive applications.

Pricing

Gemini 1.0 Pro is completely free, while Gemini 3.1 Pro Preview costs $2.00/1M input tokens and $12/1M output tokens.

Context Window

Gemini 3.1 Pro Preview offers a larger context window at 1.0M tokens compared to Gemini 1.0 Pro's 33K. This means Gemini 3.1 Pro Preview can process roughly 524 pages of text in a single request vs 16 pages for Gemini 1.0 Pro.

Best Use Cases

Choose Gemini 3.1 Pro Preview when you need higher intelligence (57.2), faster output (113 tok/s), larger context window (1.0M).

Choose Gemini 1.0 Pro if:

✓You want lower latency (0.00s vs 23.84s TTFT)
✓You want zero cost (Free vs paid)

Choose Gemini 3.1 Pro Preview if:

✓You need higher intelligence (score: 57.2 vs 8.5)
✓You need faster throughput (113 tok/s vs 0 tok/s)
✓You need a larger context window (1.0M vs 33K)
✓You need image understanding (Supports image input)

Frequently Asked Questions

Is Gemini 1.0 Pro faster than Gemini 3.1 Pro Preview?

Gemini 3.1 Pro Preview is faster, producing output at 113 tok/s compared to Gemini 1.0 Pro's 0 tok/s.

Can Gemini 1.0 Pro process images?

No, Gemini 1.0 Pro does not support image input. However, Gemini 3.1 Pro Preview does support images.

Which has a larger context window, Gemini 1.0 Pro or Gemini 3.1 Pro Preview?

Gemini 3.1 Pro Preview has a larger context window at 1.0M compared to Gemini 1.0 Pro's 33K.

Should I use Gemini 1.0 Pro or Gemini 3.1 Pro Preview?

It depends on your priorities. Gemini 3.1 Pro Preview scores higher on intelligence (57.2), but Gemini 1.0 Pro may be better for specific use cases like cost savings or speed-critical applications.

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View Gemini 1.0 Prodetails →View Gemini 3.1 Pro Previewdetails →Full pricing comparison →

Data last synced: March 26, 2026