tokevenGPTvsGPT
o3 vs o4 Mini
Side-by-side comparison of pricing, task quality, and projected cost at higher scale.
Pricing
Side-by-side pricing
o3
Mid-tiero4 Mini
Fast / BudgetInput $/MTok
$2.00
$1.10
Output $/MTok
$8.00
$4.40
Cache discount
75% off
75% off
Context
200K
200K
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
o3
o4 Mini
Guidance
When to use o3 vs o4 Mini
Choose o3 when...
- Similar performance; consider provider preference or ecosystem fit.
Choose o4 Mini when...
- -Cost matters: 45% cheaper on input tokens
At scale
Cost at scale
Estimated cost assuming a seventy percent input and thirty percent output token split.
o3
o4 Mini
100K tokens
$0.38
$0.21Cheaper
1M tokens
$3.80
$2.09Cheaper
10M tokens
$38.00
$20.90Cheaper
FAQ
When should I use o3 instead of o4 Mini?
o3 and o4 Mini perform similarly across all tracked tasks. Pick based on pricing and provider preference.
Is o4 Mini cheaper than o3?
Yes. o4 Mini input costs $1.10/MTok vs $2.00/MTok for o3, saving 45% on input.
What are the context window sizes for o3 and o4 Mini?
o3 has a 200K token context window. o4 Mini has a 200K 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 o3 and o4 Mini 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.