Claude 3 OpusvsGrok Code Fast 1
Grok Code Fast 1 is cheaper than Claude 3 Opus at $0.2/M vs $15/M input tokens.
| Spec | Claude 3 Opus | Grok Code Fast 1 |
|---|---|---|
| Input price | $15/M tokens | $0.2/M tokens |
| Output price | $75/M tokens | $1.5/M tokens |
| Context window | 200K tokens | 256K tokens |
| Free API (OpenRouter) | No | No |
| Released | Mar 2024 | Aug 2025 |
Our Verdict
Claude 3 Opus
Grok Code Fast 1
Not enough votes to call it. On the specs, nothing separates them.
Grok Code Fast 1 costs 50x less per token.
Too close to call
Reviewing agent-written code?See a Brief PR report
API pricing
Cost per 1M tokens
Claude 3 Opus
Input
$15.00
Output
$75.00
Grok Code Fast 1
Input
$0.20
75× cheaper
Output
$1.50
50× cheaper
Grok Code Fast 1 is cheaper on both: 75× input, 50× output.
Writing DNA
Style Comparison
Similarity
51%
Grok Code Fast 1 uses 249.7x more bold
Claude 3 Opus
Grok Code Fast 1
54%Vocabulary61%
14wSentence Length18w
0.48Hedging0.82
0.0Bold2.5
3.0Lists2.3
0.00Emoji0.05
0.00Headings0.82
0.06Transitions0.09
Based on 3 + 29 text responses
Research
What we learned reading every model
FAQ
Common questions
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