Claude Sonnet 4.6vsGrok 3
Claude Sonnet 4.6 has a larger context window than Grok 3 (1.0M tokens vs 128K tokens).
| Spec | Claude Sonnet 4.6 | Grok 3 |
|---|---|---|
| Input price | $3/M tokens | — |
| Output price | $15/M tokens | — |
| Context window | 1.0M tokens | 128K tokens |
| Weights | Closed | — |
| Free API (OpenRouter) | No | No |
| Released | Feb 2026 | Feb 2025 |
| SWE-bench Verified | 79.0% | 63.8% |
Our Verdict
Claude Sonnet 4.6
Grok 3
Not enough votes to call it. On the specs, nothing separates them.
Too close to call
Reviewing agent-written code?See a Brief PR report
API pricing
Cost per 1M tokens
Claude Sonnet 4.6
Input
$3.00
Output
$15.00
Grok 3
Input
—
Output
—
Where to run it
4 hosts
Grok 3
No hosts listed on OpenRouter.
Per million tokens. Prices and uptime via OpenRouter, checked 13 Sep 2026.
Writing DNA
Style Comparison
Similarity
25%
Grok 3 uses 10.1x more transitions
Claude Sonnet 4.6
Grok 3
56%Vocabulary54%
36wSentence Length17w
0.53Hedging0.65
5.1Bold2.6
3.4Lists2.3
0.19Emoji0.02
2.10Headings0.48
0.02Transitions0.20
Based on 23 + 27 text responses
Research
What we learned reading every model
FAQ
Common questions
Keep exploring
