tokevenGPTvsGemini
GPT 5.6 Terra 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 5.6 Terra
Mid-tierGemini 3.5 Flash
Fast / BudgetInput $/MTok
$2.50
$1.50
Output $/MTok
$15.00
$9.00
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
68
Code Review
84
vs
65
Summarization
92
vs
85
Q&A
92
vs
84
Extraction
90
vs
90
Reasoning
82
vs
60
Classification
89
vs
92
Creative Writing
80
vs
55
GPT 5.6 Terra
Gemini 3.5 Flash
Guidance
When to use GPT 5.6 Terra vs Gemini 3.5 Flash
Choose GPT 5.6 Terra when...
- -You need strong summarization (confidence 92 vs 85)
- -You need strong q&a (confidence 92 vs 84)
- -You need strong code generation (confidence 86 vs 68)
- -You need strong code review (confidence 84 vs 65)
Choose Gemini 3.5 Flash when...
- -You need strong classification (confidence 92 vs 89)
- -Cost matters: 40% 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 3.5 Flash
100K tokens
$0.63
$0.38Cheaper
1M tokens
$6.25
$3.75Cheaper
10M tokens
$62.50
$37.50Cheaper
FAQ
When should I use GPT 5.6 Terra instead of Gemini 3.5 Flash?
GPT 5.6 Terra outperforms Gemini 3.5 Flash for Summarization, Q&A, Code Generation. It costs $2.50/$15.00 per million tokens (input/output).
Is Gemini 3.5 Flash cheaper than GPT 5.6 Terra?
Yes. Gemini 3.5 Flash input costs $1.50/MTok vs $2.50/MTok for GPT 5.6 Terra, saving 40% on input.
What are the context window sizes for GPT 5.6 Terra and Gemini 3.5 Flash?
GPT 5.6 Terra has a 1,000K token context window. Gemini 3.5 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.