GPTvsGemini

GPT 5.6 Terra vs Gemini 3 Flash

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

Pricing

Side-by-side pricing

GPT 5.6 Terra

Mid-tier

Gemini 3 Flash

Fast / Budget
Input $/MTok
$2.50
$0.50
Output $/MTok
$15.00
$3.00
Cache discount
90% off
75% off
Context
1,000K
1,000K

Quality

Task confidence comparison

Confidence score from zero to one hundred by task type, where higher is better.
Code Generation
86
vs
65
Code Review
84
vs
62
Summarization
92
vs
83
Q&A
92
vs
82
Extraction
90
vs
86
Reasoning
82
vs
58
Classification
89
vs
88
Creative Writing
80
vs
52
GPT 5.6 Terra
Gemini 3 Flash

Guidance

When to use GPT 5.6 Terra vs Gemini 3 Flash

Choose GPT 5.6 Terra when...

  • -You need strong summarization (confidence 92 vs 83)
  • -You need strong q&a (confidence 92 vs 82)
  • -You need strong extraction (confidence 90 vs 86)
  • -You need strong classification (confidence 89 vs 88)

Choose Gemini 3 Flash when...

  • -Cost matters: 80% cheaper on input tokens

At scale

Cost at scale

Estimated cost assuming a seventy percent input and thirty percent output token split.
GPT 5.6 Terra
Gemini 3 Flash
100K tokens
$0.63
$0.13Cheaper
1M tokens
$6.25
$1.25Cheaper
10M tokens
$62.50
$12.50Cheaper

FAQ

When should I use GPT 5.6 Terra instead of Gemini 3 Flash?

GPT 5.6 Terra outperforms Gemini 3 Flash for Summarization, Q&A, Extraction. It costs $2.50/$15.00 per million tokens (input/output).

Is Gemini 3 Flash cheaper than GPT 5.6 Terra?

Yes. Gemini 3 Flash input costs $0.50/MTok vs $2.50/MTok for GPT 5.6 Terra, saving 80% on input.

What are the context window sizes for GPT 5.6 Terra and Gemini 3 Flash?

GPT 5.6 Terra has a 1,000K token context window. Gemini 3 Flash has a 1,000K token context window.

Track your real costs

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