GPTvsGemini

GPT 4o (2024-05-13) vs Gemini 3.5 Flash

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

Pricing

Side-by-side pricing

GPT 4o (2024-05-13)

Flagship

Gemini 3.5 Flash

Fast / Budget
Input $/MTok
$5.00
$1.50
Output $/MTok
$15.00
$9.00
Cache discount
0% off
90% off
Context
128K
1,048.576K

Quality

Task confidence comparison

Confidence score from zero to one hundred by task type, where higher is better.
Code Generation
0
vs
68
Code Review
0
vs
65
Summarization
0
vs
85
Q&A
0
vs
84
Extraction
0
vs
90
Reasoning
0
vs
60
Classification
0
vs
92
Creative Writing
0
vs
55
GPT 4o (2024-05-13)
Gemini 3.5 Flash

Guidance

When to use GPT 4o (2024-05-13) vs Gemini 3.5 Flash

Choose GPT 4o (2024-05-13) when...

  • Similar performance; consider provider preference or ecosystem fit.

Choose Gemini 3.5 Flash when...

  • -Cost matters: 70% cheaper on input tokens
  • -You need a larger context window (1,048.576K vs 128K)

At scale

Cost at scale

Estimated cost assuming a seventy percent input and thirty percent output token split.
GPT 4o (2024-05-13)
Gemini 3.5 Flash
100K tokens
$0.80
$0.38Cheaper
1M tokens
$8.00
$3.75Cheaper
10M tokens
$80.00
$37.50Cheaper

FAQ

When should I use GPT 4o (2024-05-13) instead of Gemini 3.5 Flash?

GPT 4o (2024-05-13) and Gemini 3.5 Flash perform similarly across all tracked tasks. Pick based on pricing and provider preference.

Is Gemini 3.5 Flash cheaper than GPT 4o (2024-05-13)?

Yes. Gemini 3.5 Flash input costs $1.50/MTok vs $5.00/MTok for GPT 4o (2024-05-13), saving 70% on input.

What are the context window sizes for GPT 4o (2024-05-13) and Gemini 3.5 Flash?

GPT 4o (2024-05-13) has a 128K token context window. Gemini 3.5 Flash has a 1,048.576K token context window.

Track your real costs

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