tokevenGPTvsGemini
GPT 5 vs Gemini Omni 1.1 Flash
Side-by-side comparison of pricing, task quality, and projected cost at higher scale.
Pricing
Side-by-side pricing
GPT 5
Mid-tierGemini Omni 1.1 Flash
Fast / BudgetInput $/MTok
$1.25
$1.50
Output $/MTok
$10.00
$9.00
Cache discount
90% off
0% off
Context
272K
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
0
Code Review
0
vs
0
Summarization
0
vs
0
Q&A
0
vs
0
Extraction
0
vs
0
Reasoning
0
vs
0
Classification
0
vs
0
Creative Writing
0
vs
0
GPT 5
Gemini Omni 1.1 Flash
Guidance
When to use GPT 5 vs Gemini Omni 1.1 Flash
Choose GPT 5 when...
- -Cost matters: 17% cheaper on input tokens
Choose Gemini Omni 1.1 Flash when...
- -You need a larger context window (1,048.576K vs 272K)
- Similar performance; consider provider preference or ecosystem fit.
At scale
Cost at scale
Estimated cost assuming a seventy percent input and thirty percent output token split.
GPT 5
Gemini Omni 1.1 Flash
100K tokens
$0.39
$0.38Cheaper
1M tokens
$3.88
$3.75Cheaper
10M tokens
$38.75
$37.50Cheaper
FAQ
When should I use GPT 5 instead of Gemini Omni 1.1 Flash?
GPT 5 and Gemini Omni 1.1 Flash perform similarly across all tracked tasks. Pick based on pricing and provider preference.
Is Gemini Omni 1.1 Flash cheaper than GPT 5?
Gemini Omni 1.1 Flash input costs $1.50/MTok, which is 20% more than GPT 5 at $1.25/MTok.
What are the context window sizes for GPT 5 and Gemini Omni 1.1 Flash?
GPT 5 has a 272K token context window. Gemini Omni 1.1 Flash has a 1,048.576K 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 and Gemini Omni 1.1 Flash 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.