tokevenGPTvsGrok
GPT 4o vs Grok 4.20 Non-Reasoning
Side-by-side comparison of pricing, task quality, and projected cost at higher scale.
Pricing
Side-by-side pricing
GPT 4o
Mid-tierGrok 4.20 Non-Reasoning
Mid-tierInput $/MTok
$2.50
$1.25
Output $/MTok
$10.00
$2.50
Cache discount
50% off
84% off
Context
128K
1,000K
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 4o
Grok 4.20 Non-Reasoning
Guidance
When to use GPT 4o vs Grok 4.20 Non-Reasoning
Choose GPT 4o when...
- Similar performance; consider provider preference or ecosystem fit.
Choose Grok 4.20 Non-Reasoning when...
- -Cost matters: 50% cheaper on input tokens
- -You need a larger context window (1,000K vs 128K)
At scale
Cost at scale
Estimated cost assuming a seventy percent input and thirty percent output token split.
GPT 4o
Grok 4.20 Non-Reasoning
100K tokens
$0.47
$0.16Cheaper
1M tokens
$4.75
$3.25Cheaper
10M tokens
$47.50
$32.50Cheaper
FAQ
When should I use GPT 4o instead of Grok 4.20 Non-Reasoning?
GPT 4o and Grok 4.20 Non-Reasoning perform similarly across all tracked tasks. Pick based on pricing and provider preference.
Is Grok 4.20 Non-Reasoning cheaper than GPT 4o?
Yes. Grok 4.20 Non-Reasoning input costs $1.25/MTok vs $2.50/MTok for GPT 4o, saving 50% on input.
What are the context window sizes for GPT 4o and Grok 4.20 Non-Reasoning?
GPT 4o has a 128K token context window. Grok 4.20 Non-Reasoning has a 1,000K 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 4o and Grok 4.20 Non-Reasoning 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.