Claude 3 OpusvsClaude 3.7 Sonnet
Claude 3.7 Sonnet is cheaper than Claude 3 Opus at $3/M vs $15/M input tokens.
| Spec | Claude 3 Opus | Claude 3.7 Sonnet |
|---|---|---|
| Input price | $15/M tokens | $3/M tokens |
| Output price | $75/M tokens | $15/M tokens |
| Context window | 200K tokens | 200K tokens |
| Parameters | Not disclosed | Not disclosed |
| Free API (OpenRouter) | No | No |
| Released | Mar 2024 | Feb 2025 |
| MMLU | 86.8% | 80.3% |
Our Verdict
Claude 3 Opus
Claude 3.7 Sonnet
Not enough votes to call it. On the specs, nothing separates them.
Claude 3.7 Sonnet costs 5.0x less per token.
Too close to call
API pricing
Cost per 1M tokens
Claude 3 Opus
Input
$15.00
Output
$75.00
Claude 3.7 Sonnet
Input
$3.00
5.0× cheaper
Output
$15.00
5.0× cheaper
Claude 3.7 Sonnet is cheaper on both: 5.0× input, 5.0× output.
Writing DNA
Style Comparison
Similarity
54%
Claude 3.7 Sonnet uses 217.0x more bold
Claude 3 Opus
Claude 3.7 Sonnet
54%Vocabulary61%
14wSentence Length33w
0.48Hedging0.83
0.0Bold2.2
3.0Lists4.9
0.00Emoji0.00
0.00Headings1.78
0.06Transitions0.16
Based on 3 + 26 text responses
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