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Google

Gemini 3.1 Pro

VS
OpenAI

GPT-5.4 mini

✍️ Analysis by:the whichllmmodel Editorial Team|📅 Updated: June 2026

Decision Recommendation

⚖️ Editorial Verdict: In our analysis, Gemini 3.1 Pro is the premium intelligence choice, scoring 0.2% higher on coding benchmarks. However, this accuracy premium comes with a cost overhead: GPT-5.4 mini is 2.7x cheaper to run and delivers 1.8x faster throughput. If you are building high-volume, simple chatbots or processing massive amounts of text where budget is critical, GPT-5.4 mini offers excellent cost savings. For agentic reasoning, code refactoring, or complex logical tasks, the accuracy premium of Gemini 3.1 Pro fully justifies the cost.

Model Specs

Gemini 3.1 Pro

Benchmarks & Scores

Coding (swe-bench-pro)
54.2%
Reasoning (gpqa-diamond)Winner (+6.8%)
94.3%

Cost & Performance

Cost (per 1M tokens)
$4.50Input: $2.00 | Output: $12.00
Speed
109 tps
Context WindowLarger
1M tokens
Model Specs

GPT-5.4 mini

Benchmarks & Scores

Coding (swe-bench-pro)Winner (+0.2%)
54.4%
Reasoning (gpqa-diamond)
87.5%

Cost & Performance

Cost (per 1M tokens)2.7x cheaper
$1.69Input: $0.75 | Output: $4.50
Speed1.8x faster
201 tps
Context Window
400k tokens
Read our data collection methodology

Frequently Asked Questions

GPT-5.4 mini is cheaper than Gemini 3.1 Pro. GPT-5.4 mini has a blended cost of $1.69/1M tokens, which is about 2.7x cheaper than Gemini 3.1 Pro at $4.50/1M tokens.

GPT-5.4 mini is faster than Gemini 3.1 Pro. GPT-5.4 mini generates 201 tokens per second (tps) compared to Gemini 3.1 Pro which generates 109 tokens per second.

GPT-5.4 mini is better for coding tasks. It scores 54.4% on coding evaluations (swe-bench-pro) compared to Gemini 3.1 Pro which scores 54.2%.

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