DeepSeek: DeepSeek V3.1 vs xAI: Grok 4.1 Fast
Side-by-side comparison of DeepSeek: DeepSeek V3.1 and xAI: Grok 4.1 Fast. Compare pricing, context window, capabilities, and find out which is better for your workflow.
Verdict
strong confidencexAI: Grok 4.1 Fast leads overall
xAI: Grok 4.1 Fast leads in price and context window and capabilities and max output, making it the stronger choice for most workflows. DeepSeek: DeepSeek V3.1 remains a solid alternative depending on your specific needs.
Best for with DeepSeek: DeepSeek V3.1
Best for with xAI: Grok 4.1 Fast
Side-by-side
Technical specifications
| DeepSeek: DeepSeek V3.1 | xAI: Grok 4.1 Fast | |
|---|---|---|
| Provider | DeepSeek | xAI |
| Input price | $0.15/M | $0.20/M |
| Output price | $0.75/M | $0.50/M |
| Context window | 33K | 2.0M |
| Max output | 7K | 30K |
| Capabilities | Tool useReasoning | Tool useVisionReasoning |
| Released | Aug 21, 2025 | Nov 19, 2025 |
Scoring breakdown
How each dimension compares
Price
xAI: Grok 4.1 Fast leadsDeepSeek: DeepSeek V3.1
$0.75/M tokens
xAI: Grok 4.1 Fast
$0.50/M tokens
Context Window
xAI: Grok 4.1 Fast leadsDeepSeek: DeepSeek V3.1
33K tokens
xAI: Grok 4.1 Fast
2.0M tokens
Capabilities
xAI: Grok 4.1 Fast leadsDeepSeek: DeepSeek V3.1
2/4
xAI: Grok 4.1 Fast
3/4
Max Output
xAI: Grok 4.1 Fast leadsDeepSeek: DeepSeek V3.1
7K tokens
xAI: Grok 4.1 Fast
30K tokens
Recency
DeepSeek: DeepSeek V3.1
Aug 2025
xAI: Grok 4.1 Fast
Nov 2025
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