Claude Sonnet 4.6vsGrok Code Fast 1
Grok Code Fast 1 is cheaper than Claude Sonnet 4.6 at $0.2/M vs $3/M input tokens.
| Spec | Claude Sonnet 4.6 | Grok Code Fast 1 |
|---|---|---|
| Input price | $3/M tokens | $0.2/M tokens |
| Output price | $15/M tokens | $1.5/M tokens |
| Context window | 1.0M tokens | 256K tokens |
| Released | Feb 2026 | Aug 2025 |
| SWE-bench Verified | 79.0% | 70.8% |
Our Verdict
Claude Sonnet 4.6
Grok Code Fast 1Runner-up
Not enough votes to call it. On the specs, Claude Sonnet 4.6 has the edge: bigger model tier, newer, bigger context window.
Grok Code Fast 1 costs 10x less per token.
Slight edge
API pricing
Cost per 1M tokens
Claude Sonnet 4.6
Input
$3.00
Output
$15.00
Grok Code Fast 1
Input
$0.20
15× cheaper
Output
$1.50
10× cheaper
Grok Code Fast 1 is cheaper on both — 15× input, 10× output
Writing DNA
Style Comparison
Similarity
34%
Grok Code Fast 1 uses 5.5x more transitions
Claude Sonnet 4.6
Grok Code Fast 1
56%Vocabulary60%
36wSentence Length17w
0.53Hedging0.97
5.1Bold2.8
3.4Lists2.5
0.19Emoji0.06
2.10Headings0.89
0.02Transitions0.11
Based on 23 + 23 text responses
Research
What we learned reading every model
FAQ
Common questions
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