Claude Opus 4.6vsGrok 4
Grok 4 is cheaper than Claude Opus 4.6 at $3/M vs $5/M input tokens.
| Spec | Claude Opus 4.6 | Grok 4 |
|---|---|---|
| Input price | $5/M tokens | $3/M tokens |
| Output price | $25/M tokens | $15/M tokens |
| Context window | 1.0M tokens | 256K tokens |
| Weights | Closed | — |
| Free API (OpenRouter) | No | No |
| Released | Feb 2026 | Jul 2025 |
Our Verdict
Claude Opus 4.6
Grok 4Runner-up
Not enough votes to call it. On the specs, Claude Opus 4.6 has the edge: bigger model tier, newer, bigger context window.
Slight edge
Reviewing agent-written code?See a Brief PR report
API pricing
Cost per 1M tokens
Claude Opus 4.6
Input
$5.00
Output
$25.00
Grok 4
Input
$3.00
1.7× cheaper
Output
$15.00
1.7× cheaper
Grok 4 is cheaper on both: 1.7× input, 1.7× output.
Where to run it
4 hosts
Grok 4
No hosts listed on OpenRouter.
Per million tokens. Prices and uptime via OpenRouter, checked 11 Sep 2026.
Writing DNA
Style Comparison
Similarity
45%
Grok 4 uses 2.5x more transitions
Claude Opus 4.6
Grok 4
56%Vocabulary56%
33wSentence Length18w
0.73Hedging0.65
5.3Bold2.4
2.7Lists2.4
1.16Emoji0.60
1.23Headings0.73
0.02Transitions0.06
Based on 26 + 26 text responses
Research
What we learned reading every model
FAQ
Common questions
Keep exploring
More comparisons
Grok 4 vs Ox AlphaNew provider
Grok 4 vs MiniMax M3New provider
Claude Opus 4.6 vs Gemini 2.5 Pro (I/O Edition)New provider
Claude Opus 4.6 vs Gemini 2.5 Pro Preview 06-05New provider
Claude Opus 4.6 vs Mistral Devstral Small 1.1New provider
Claude Opus 4.6 vs Dots3-Note PreviewNew provider
Claude Opus 4.6 vs Elephant AlphaNew provider
Claude Opus 4.6 vs ERNIE 4.5 300B A47BNew provider