tokevenClaudevsGrok
Claude Opus 4.8 vs Grok 4.5
Side-by-side comparison of pricing, task quality, and projected cost at higher scale.
Pricing
Side-by-side pricing
Claude Opus 4.8
FlagshipGrok 4.5
FlagshipInput $/MTok
$5.00
$2.00
Output $/MTok
$25.00
$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
63
vs
61
Code Review
94
vs
0
Summarization
69
vs
71
Q&A
85
vs
0
Extraction
73
vs
72
Reasoning
89
vs
87
Classification
80
vs
0
Creative Writing
81
vs
74
Claude Opus 4.8
Grok 4.5
Guidance
When to use Claude Opus 4.8 vs Grok 4.5
Choose Claude Opus 4.8 when...
- -You need strong reasoning (confidence 89 vs 87)
- -You need strong creative writing (confidence 81 vs 74)
- -You need strong extraction (confidence 73 vs 72)
- -You need strong code generation (confidence 63 vs 61)
- -You need a larger context window (1M vs 500K)
Choose Grok 4.5 when...
- -You need strong summarization (confidence 71 vs 69)
- -Cost matters: 60% cheaper on input tokens
At scale
Cost at scale
Estimated cost assuming a seventy percent input and thirty percent output token split.
Claude Opus 4.8
Grok 4.5
100K tokens
$1.10
$0.32Cheaper
1M tokens
$11.00
$6.40Cheaper
10M tokens
$110.00
$64.00Cheaper
FAQ
When should I use Claude Opus 4.8 instead of Grok 4.5?
Claude Opus 4.8 outperforms Grok 4.5 for Code Generation, Extraction, Reasoning. It costs $5.00/$25.00 per million tokens (input/output).
Is Grok 4.5 cheaper than Claude Opus 4.8?
Yes. Grok 4.5 input costs $2.00/MTok vs $5.00/MTok for Claude Opus 4.8, saving 60% on input.
What are the context window sizes for Claude Opus 4.8 and Grok 4.5?
Claude Opus 4.8 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 Opus 4.8 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.