Anthropic: Claude Opus 4.1 vs xAI: Grok 4
Side-by-side comparison of Anthropic: Claude Opus 4.1 and xAI: Grok 4. Compare pricing, context window, capabilities, and find out which is better for your workflow.
Verdict
strong confidencexAI: Grok 4 leads overall
xAI: Grok 4 leads in price and context window, making it the stronger choice for most workflows. Anthropic: Claude Opus 4.1 remains competitive with advantages in max output.
Best for with Anthropic: Claude Opus 4.1
Best for with xAI: Grok 4
Side-by-side
Technical specifications
| Anthropic: Claude Opus 4.1 | xAI: Grok 4 | |
|---|---|---|
| Provider | Anthropic | xAI |
| Input price | $15/M | $3/M |
| Output price | $75/M | $15/M |
| Context window | 200K | 256K |
| Max output | 32K | N/A |
| Capabilities | Tool useVisionReasoning | Tool useVisionReasoning |
| Released | Aug 5, 2025 | Jul 9, 2025 |
Scoring breakdown
How each dimension compares
Price
xAI: Grok 4 leadsAnthropic: Claude Opus 4.1
$75/M tokens
xAI: Grok 4
$15/M tokens
Context Window
xAI: Grok 4 leadsAnthropic: Claude Opus 4.1
200K tokens
xAI: Grok 4
256K tokens
Capabilities
Anthropic: Claude Opus 4.1
3/4
xAI: Grok 4
3/4
Max Output
Anthropic: Claude Opus 4.1 leadsAnthropic: Claude Opus 4.1
32K tokens
xAI: Grok 4
N/A
Recency
Anthropic: Claude Opus 4.1
Aug 2025
xAI: Grok 4
Jul 2025
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