tokevenGrokvsGrok
Grok 4.3 vs Grok 4.20 Reasoning
Side-by-side comparison of pricing, task quality, and projected cost at higher scale.
Pricing
Side-by-side pricing
Grok 4.3
Mid-tierGrok 4.20 Reasoning
Mid-tierInput $/MTok
$1.25
$1.25
Output $/MTok
$2.50
$2.50
Cache discount
84% off
84% off
Context
1,000K
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
Grok 4.3
Grok 4.20 Reasoning
Guidance
When to use Grok 4.3 vs Grok 4.20 Reasoning
Choose Grok 4.3 when...
- Similar performance; consider provider preference or ecosystem fit.
Choose Grok 4.20 Reasoning when...
- 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.
Grok 4.3
Grok 4.20 Reasoning
100K tokens
$0.16
$0.16
1M tokens
$3.25
$3.25
10M tokens
$32.50
$32.50
FAQ
When should I use Grok 4.3 instead of Grok 4.20 Reasoning?
Grok 4.3 and Grok 4.20 Reasoning perform similarly across all tracked tasks. Pick based on pricing and provider preference.
Is Grok 4.20 Reasoning cheaper than Grok 4.3?
Both models have the same input pricing at $1.25/MTok. Compare output pricing: $2.50 vs $2.50/MTok.
What are the context window sizes for Grok 4.3 and Grok 4.20 Reasoning?
Grok 4.3 has a 1,000K token context window. Grok 4.20 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 Grok 4.3 and Grok 4.20 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.