tokevenGPTvsGemini
GPT 5.5 vs Gemini 3.5 Flash-Lite
Side-by-side comparison of pricing, task quality, and projected cost at higher scale.
Pricing
Side-by-side pricing
GPT 5.5
FlagshipGemini 3.5 Flash-Lite
Fast / BudgetInput $/MTok
$5.00
$0.30
Output $/MTok
$30.00
$2.50
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
65
vs
58
Code Review
90
vs
52
Summarization
70
vs
67
Q&A
90
vs
78
Extraction
78
vs
69
Reasoning
90
vs
60
Classification
85
vs
85
Creative Writing
73
vs
67
GPT 5.5
Gemini 3.5 Flash-Lite
Guidance
When to use GPT 5.5 vs Gemini 3.5 Flash-Lite
Choose GPT 5.5 when...
- -You need strong code review (confidence 90 vs 52)
- -You need strong q&a (confidence 90 vs 78)
- -You need strong reasoning (confidence 90 vs 60)
- -You need strong extraction (confidence 78 vs 69)
- -You need a larger context window (1.1M vs 1.0M)
Choose Gemini 3.5 Flash-Lite when...
- -Cost matters: 94% cheaper on input tokens
At scale
Cost at scale
Estimated cost assuming a seventy percent input and thirty percent output token split.
GPT 5.5
Gemini 3.5 Flash-Lite
100K tokens
$1.25
$0.10Cheaper
1M tokens
$20.50
$0.96Cheaper
10M tokens
$205.00
$9.60Cheaper
FAQ
When should I use GPT 5.5 instead of Gemini 3.5 Flash-Lite?
GPT 5.5 outperforms Gemini 3.5 Flash-Lite for Code Generation, Code Review, Summarization. It costs $5.00/$30.00 per million tokens (input/output).
Is Gemini 3.5 Flash-Lite cheaper than GPT 5.5?
Yes. Gemini 3.5 Flash-Lite input costs $0.30/MTok vs $5.00/MTok for GPT 5.5, saving 94% on input.
What are the context window sizes for GPT 5.5 and Gemini 3.5 Flash-Lite?
GPT 5.5 has a 1.1M token context window. Gemini 3.5 Flash-Lite has a 1.0M token context window.
Go deeper on either model
Per-call cost calculators, provider lineups, and price history for both models on this page.
Other comparisons
How GPT 5.5 and Gemini 3.5 Flash-Lite stack up against the rest of the field.
Track your real costs
Comparisons show estimated costs at list price. The dashboard reveals your real spend and savings.