GPT-5.4 (xhigh) vs Gemini 3.1 Pro Preview: Which AI Model Is Better?

Q: Should I use GPT-5.4 (xhigh) or Gemini 3.1 Pro Preview?

Both models perform similarly on intelligence benchmarks. Choose based on specific needs: pricing, speed, context window, or provider ecosystem.

Updated March 26, 2026· Based on independent benchmark data

Quick Verdict

GPT-5.4 (xhigh) and Gemini 3.1 Pro Preview are virtually tied on intelligence (57.2 vs 57.2). For speed, Gemini 3.1 Pro Preview wins at 113 tok/s vs 77 tok/s.

Head-to-Head Comparison

Metric	GPT-5.4 (xhigh)	Gemini 3.1 Pro Preview
Intelligence Score	57.2	57.2
Coding Score	57.3	55.5
Math Score	N/A	N/A
Speed (tok/s)	77 tok/s	113 tok/s
Latency (TTFT)	181.82s	23.84s
Input Price / 1M tokens	$2.50	$2.00
Output Price / 1M tokens	$15	$12
Context Window	N/A

Detailed Analysis

Intelligence & Quality

GPT-5.4 (xhigh) and Gemini 3.1 Pro Preview perform similarly on overall intelligence, scoring 57.2 and 57.2 respectively. Their coding capabilities are closely matched (57.3 vs 55.5).

Speed & Latency

Gemini 3.1 Pro Preview generates output significantly faster at 113 tok/s compared to GPT-5.4 (xhigh)'s 77 tok/s, making it 1.5x faster for streaming responses. Time to first token is 23.84s for Gemini 3.1 Pro Preview vs 181.82s for GPT-5.4 (xhigh), which affects perceived responsiveness in interactive applications.

Pricing

Gemini 3.1 Pro Preview is more affordable at $2.00/1M input tokens ($12/1M output), while GPT-5.4 (xhigh) costs $2.50/1M input ($15/1M output). For a typical workload of 100 requests per day at 2,000 tokens each, GPT-5.4 (xhigh) would cost approximately $15.00/month vs $12.00/month for Gemini 3.1 Pro Preview in input costs alone.

Best Use Cases

Choose Gemini 3.1 Pro Preview when you need faster output (113 tok/s).

Choose GPT-5.4 (xhigh) if:

✓You prioritize coding performance (score: 57.3 vs 55.5)

Choose Gemini 3.1 Pro Preview if:

✓You need faster throughput (113 tok/s vs 77 tok/s)
✓You want lower latency (23.84s vs 181.82s TTFT)
✓You need image understanding (Supports image input)

Frequently Asked Questions

Is GPT-5.4 (xhigh) better than Gemini 3.1 Pro Preview for coding?

GPT-5.4 (xhigh) scores higher on coding benchmarks (57.3 vs 55.5), making it the better choice for programming tasks.

Which is cheaper, GPT-5.4 (xhigh) or Gemini 3.1 Pro Preview?

Gemini 3.1 Pro Preview is cheaper at $2.00/1M input tokens vs $2.50/1M for GPT-5.4 (xhigh).

Is GPT-5.4 (xhigh) faster than Gemini 3.1 Pro Preview?

Gemini 3.1 Pro Preview is faster, producing output at 113 tok/s compared to GPT-5.4 (xhigh)'s 77 tok/s.

Can GPT-5.4 (xhigh) process images?

No, GPT-5.4 (xhigh) does not support image input. However, Gemini 3.1 Pro Preview does support images.

Should I use GPT-5.4 (xhigh) or Gemini 3.1 Pro Preview?

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View GPT-5.4 (xhigh)details →View Gemini 3.1 Pro Previewdetails →Full pricing comparison →

Data last synced: March 26, 2026