Gemini 2.5 Pro Preview (Mar' 25) vs GPT-5.4 (xhigh): Which AI Model Is Better?

Updated March 26, 2026· Based on independent benchmark data

Quick Verdict

GPT-5.4 (xhigh) leads in intelligence with a score of 57.2 vs 30.3. For speed, GPT-5.4 (xhigh) wins at 77 tok/s vs 0 tok/s.

Head-to-Head Comparison

Metric	Gemini 2.5 Pro Preview (Mar' 25)	GPT-5.4 (xhigh)
Intelligence Score	30.3	57.2
Coding Score	46.7	57.3
Math Score	N/A	N/A
Speed (tok/s)	0 tok/s	77 tok/s
Latency (TTFT)	0.00s	181.82s
Input Price / 1M tokens	Free	$2.50
Output Price / 1M tokens	Free	$15
Context Window	N/A

Detailed Analysis

Intelligence & Quality

GPT-5.4 (xhigh) outperforms Gemini 2.5 Pro Preview (Mar' 25) on the intelligence index with a score of 57.2 compared to 30.3. For coding tasks, GPT-5.4 (xhigh) has the edge with a coding score of 57.3 vs 46.7.

Speed & Latency

GPT-5.4 (xhigh) generates output significantly faster at 77 tok/s compared to Gemini 2.5 Pro Preview (Mar' 25)'s 0 tok/s, making it Infinityx faster for streaming responses. Time to first token is 0.00s for Gemini 2.5 Pro Preview (Mar' 25) vs 181.82s for GPT-5.4 (xhigh), which affects perceived responsiveness in interactive applications.

Pricing

Gemini 2.5 Pro Preview (Mar' 25) is completely free, while GPT-5.4 (xhigh) costs $2.50/1M input tokens and $15/1M output tokens.

Best Use Cases

Choose GPT-5.4 (xhigh) when you need higher intelligence (57.2), stronger coding performance (57.3), faster output (77 tok/s).

Choose Gemini 2.5 Pro Preview (Mar' 25) if:

✓You want lower latency (0.00s vs 181.82s TTFT)
✓You want zero cost (Free vs paid)

Choose GPT-5.4 (xhigh) if:

✓You need higher intelligence (score: 57.2 vs 30.3)
✓You prioritize coding performance (score: 57.3 vs 46.7)
✓You need faster throughput (77 tok/s vs 0 tok/s)

Frequently Asked Questions

Is Gemini 2.5 Pro Preview (Mar' 25) better than GPT-5.4 (xhigh) for coding?

GPT-5.4 (xhigh) scores higher on coding benchmarks (57.3 vs 46.7), making it the better choice for programming tasks.

Is Gemini 2.5 Pro Preview (Mar' 25) faster than GPT-5.4 (xhigh)?

GPT-5.4 (xhigh) is faster, producing output at 77 tok/s compared to Gemini 2.5 Pro Preview (Mar' 25)'s 0 tok/s.

Can Gemini 2.5 Pro Preview (Mar' 25) process images?

No, Gemini 2.5 Pro Preview (Mar' 25) does not support image input. Neither model supports image input.

Should I use Gemini 2.5 Pro Preview (Mar' 25) or GPT-5.4 (xhigh)?

It depends on your priorities. GPT-5.4 (xhigh) scores higher on intelligence (57.2), but Gemini 2.5 Pro Preview (Mar' 25) may be better for specific use cases like cost savings or speed-critical applications.

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View Gemini 2.5 Pro Preview (Mar' 25)details →View GPT-5.4 (xhigh)details →Full pricing comparison →

Data last synced: March 26, 2026