tokevenClaudevsGrok
Claude Sonnet 5 vs Grok 4.3
Side-by-side comparison of pricing, task quality, and projected cost at higher scale.
Pricing
Side-by-side pricing
Claude Sonnet 5
Mid-tierGrok 4.3
Mid-tierInput $/MTok
$2.00
$1.25
Output $/MTok
$10.00
$2.50
Cache discount
90% off
84% off
Context
1M
1M
Quality
Task confidence comparison
Confidence score from zero to one hundred by task type, where higher is better.
Code Generation
68
vs
39
Code Review
96
vs
0
Summarization
64
vs
60
Q&A
89
vs
0
Extraction
70
vs
70
Reasoning
89
vs
71
Classification
86
vs
0
Creative Writing
62
vs
71
Claude Sonnet 5
Grok 4.3
Guidance
When to use Claude Sonnet 5 vs Grok 4.3
Choose Claude Sonnet 5 when...
- -You need strong reasoning (confidence 89 vs 71)
- -You need strong code generation (confidence 68 vs 39)
- -You need strong summarization (confidence 64 vs 60)
Choose Grok 4.3 when...
- -You need strong creative writing (confidence 71 vs 62)
- -Cost matters: 38% cheaper on input tokens
At scale
Cost at scale
Estimated cost assuming a seventy percent input and thirty percent output token split.
Claude Sonnet 5
Grok 4.3
100K tokens
$0.44
$0.16Cheaper
1M tokens
$4.40
$3.25Cheaper
10M tokens
$44.00
$32.50Cheaper
FAQ
When should I use Claude Sonnet 5 instead of Grok 4.3?
Claude Sonnet 5 outperforms Grok 4.3 for Code Generation, Summarization, Reasoning. It costs $2.00/$10.00 per million tokens (input/output).
Is Grok 4.3 cheaper than Claude Sonnet 5?
Yes. Grok 4.3 input costs $1.25/MTok vs $2.00/MTok for Claude Sonnet 5, saving 38% on input.
What are the context window sizes for Claude Sonnet 5 and Grok 4.3?
Claude Sonnet 5 has a 1M token context window. Grok 4.3 has a 1M 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 Claude Sonnet 5 and Grok 4.3 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.