GPTvsGemini

GPT 5.4 vs Gemini 3.1 Pro

Side-by-side comparison of pricing, task quality, and projected cost at higher scale.

Pricing

Side-by-side pricing

GPT 5.4

Mid-tier

Gemini 3.1 Pro

Mid-tier
Input $/MTok
$2.50
$2.00
Output $/MTok
$15.00
$12.00
Cache discount
90% off
90% off
Context
1.1M
1.0M

Quality

Task confidence comparison

Confidence score from zero to one hundred by task type, where higher is better.
Code Generation
63
vs
57
Code Review
82
vs
84
Summarization
67
vs
80
Q&A
91
vs
87
Extraction
76
vs
75
Reasoning
88
vs
84
Classification
88
vs
86
Creative Writing
79
vs
77
GPT 5.4
Gemini 3.1 Pro

Guidance

When to use GPT 5.4 vs Gemini 3.1 Pro

Choose GPT 5.4 when...

  • -You need strong q&a (confidence 91 vs 87)
  • -You need strong reasoning (confidence 88 vs 84)
  • -You need strong classification (confidence 88 vs 86)
  • -You need strong creative writing (confidence 79 vs 77)
  • -You need a larger context window (1.1M vs 1.0M)

Choose Gemini 3.1 Pro when...

  • -You need strong code review (confidence 84 vs 82)
  • -You need strong summarization (confidence 80 vs 67)
  • -Cost matters: 20% cheaper on input tokens

At scale

Cost at scale

Estimated cost assuming a seventy percent input and thirty percent output token split.
GPT 5.4
Gemini 3.1 Pro
100K tokens
$0.63
$0.50Cheaper
1M tokens
$10.25
$8.20Cheaper
10M tokens
$102.50
$82.00Cheaper

FAQ

When should I use GPT 5.4 instead of Gemini 3.1 Pro?

GPT 5.4 outperforms Gemini 3.1 Pro for Code Generation, Q&A, Extraction. It costs $2.50/$15.00 per million tokens (input/output).

Is Gemini 3.1 Pro cheaper than GPT 5.4?

Yes. Gemini 3.1 Pro input costs $2.00/MTok vs $2.50/MTok for GPT 5.4, saving 20% on input.

What are the context window sizes for GPT 5.4 and Gemini 3.1 Pro?

GPT 5.4 has a 1.1M token context window. Gemini 3.1 Pro has a 1.0M token context window.

Track your real costs

Comparisons show estimated costs at list price. The dashboard reveals your real spend and savings.