Claude 3.7 SonnetvsGrok Code Fast 1
Grok Code Fast 1 is cheaper than Claude 3.7 Sonnet at $0.2/M vs $3/M input tokens.
| Spec | Claude 3.7 Sonnet | Grok Code Fast 1 |
|---|---|---|
| Input price | $3/M tokens | $0.2/M tokens |
| Output price | $15/M tokens | $1.5/M tokens |
| Context window | 200K tokens | 256K tokens |
| Released | Feb 2025 | Aug 2025 |
| SWE-bench Verified | 70.3% | 70.8% |
Our Verdict
Claude 3.7 Sonnet
Grok Code Fast 1
Not enough votes to call it. On the specs, nothing separates them.
Pick Claude 3.7 Sonnet for Web Design, Image Generation. Pick Grok Code Fast 1 for Reasoning, Analysis. Grok Code Fast 1 costs 10x less per token.
Too close to call
API pricing
Cost per 1M tokens
Claude 3.7 Sonnet
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
59%
Grok Code Fast 1 uses 4.7x more emoji
Claude 3.7 Sonnet
Grok Code Fast 1
61%Vocabulary61%
33wSentence Length18w
0.83Hedging0.82
2.2Bold2.5
4.9Lists2.3
0.00Emoji0.05
1.78Headings0.82
0.16Transitions0.09
Based on 26 + 29 text responses
Research
What we learned reading every model
FAQ
Common questions
Keep exploring
More comparisons
Grok Code Fast 1 vs Ox AlphaNew provider
Claude 3.7 Sonnet vs MiniMax M3New provider
Grok Code Fast 1 vs GPT-5New provider
Grok Code Fast 1 vs Llama 4 MaverickNew provider
Claude 3.7 Sonnet vs Gemma 4 31BNew provider
Claude 3.7 Sonnet vs GLM 4 32BNew provider
Claude 3.7 Sonnet vs GLM 4.5New provider
Claude 3.7 Sonnet vs GLM 4.5 AirNew provider