tokevenGPTvsGrok
o3 Mini vs Grok 4.5
Side-by-side comparison of pricing, task quality, and projected cost at higher scale.
Pricing
Side-by-side pricing
o3 Mini
Fast / BudgetGrok 4.5
FlagshipInput $/MTok
$1.10
$2.00
Output $/MTok
$4.40
$6.00
Cache discount
50% off
85% off
Context
200K
500K
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 Mini
Grok 4.5
Guidance
When to use o3 Mini vs Grok 4.5
Choose o3 Mini when...
- -Cost matters: 45% cheaper on input tokens
Choose Grok 4.5 when...
- -You need a larger context window (500K vs 200K)
- 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.
o3 Mini
Grok 4.5
100K tokens
$0.21Cheaper
$0.32
1M tokens
$2.09Cheaper
$6.40
10M tokens
$20.90Cheaper
$64.00
FAQ
When should I use o3 Mini instead of Grok 4.5?
o3 Mini and Grok 4.5 perform similarly across all tracked tasks. Pick based on pricing and provider preference.
Is Grok 4.5 cheaper than o3 Mini?
Grok 4.5 input costs $2.00/MTok, which is 82% more than o3 Mini at $1.10/MTok.
What are the context window sizes for o3 Mini and Grok 4.5?
o3 Mini has a 200K token context window. Grok 4.5 has a 500K 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 Mini and Grok 4.5 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.