tokevenClaudevsGrok
Claude Sonnet 5 vs Grok 4.5
Side-by-side comparison of pricing, task quality, and projected cost at higher scale.
Pricing
Side-by-side pricing
Claude Sonnet 5
Mid-tierGrok 4.5
FlagshipInput $/MTok
$2.00
$2.00
Output $/MTok
$10.00
$6.00
Cache discount
90% off
85% off
Context
1M
500K
Quality
Task confidence comparison
Confidence score from zero to one hundred by task type, where higher is better.
Code Generation
68
vs
61
Code Review
96
vs
0
Summarization
64
vs
71
Q&A
89
vs
0
Extraction
70
vs
72
Reasoning
89
vs
87
Classification
86
vs
0
Creative Writing
62
vs
74
Claude Sonnet 5
Grok 4.5
Guidance
When to use Claude Sonnet 5 vs Grok 4.5
Choose Claude Sonnet 5 when...
- -You need strong reasoning (confidence 89 vs 87)
- -You need strong code generation (confidence 68 vs 61)
- -You need a larger context window (1M vs 500K)
Choose Grok 4.5 when...
- -You need strong creative writing (confidence 74 vs 62)
- -You need strong extraction (confidence 72 vs 70)
- -You need strong summarization (confidence 71 vs 64)
At scale
Cost at scale
Estimated cost assuming a seventy percent input and thirty percent output token split.
Claude Sonnet 5
Grok 4.5
100K tokens
$0.44
$0.32Cheaper
1M tokens
$4.40Cheaper
$6.40
10M tokens
$44.00Cheaper
$64.00
FAQ
When should I use Claude Sonnet 5 instead of Grok 4.5?
Claude Sonnet 5 outperforms Grok 4.5 for Code Generation, Reasoning. It costs $2.00/$10.00 per million tokens (input/output).
Is Grok 4.5 cheaper than Claude Sonnet 5?
Both models have the same input pricing at $2.00/MTok. Compare output pricing: $10.00 vs $6.00/MTok.
What are the context window sizes for Claude Sonnet 5 and Grok 4.5?
Claude Sonnet 5 has a 1M 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 Claude Sonnet 5 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.