DeepSeek: DeepSeek V3 vs xAI: Grok 4 Fast
Side-by-side comparison of DeepSeek: DeepSeek V3 and xAI: Grok 4 Fast. Compare pricing, context window, capabilities, and find out which is better for your workflow.
Verdict
strong confidencexAI: Grok 4 Fast leads overall
xAI: Grok 4 Fast leads in price and context window and capabilities, making it the stronger choice for most workflows. DeepSeek: DeepSeek V3 remains competitive with advantages in max output.
Best for with DeepSeek: DeepSeek V3
Best for with xAI: Grok 4 Fast
Side-by-side
Technical specifications
| DeepSeek: DeepSeek V3 | xAI: Grok 4 Fast | |
|---|---|---|
| Provider | DeepSeek | xAI |
| Input price | $0.32/M | $0.20/M |
| Output price | $0.89/M | $0.50/M |
| Context window | 164K | 2.0M |
| Max output | 164K | 30K |
| Capabilities | Tool use | Tool useVisionReasoning |
| Released | Dec 26, 2024 | Sep 18, 2025 |
Scoring breakdown
How each dimension compares
Price
xAI: Grok 4 Fast leadsDeepSeek: DeepSeek V3
$0.89/M tokens
xAI: Grok 4 Fast
$0.50/M tokens
Context Window
xAI: Grok 4 Fast leadsDeepSeek: DeepSeek V3
164K tokens
xAI: Grok 4 Fast
2.0M tokens
Capabilities
xAI: Grok 4 Fast leadsDeepSeek: DeepSeek V3
1/4
xAI: Grok 4 Fast
3/4
Max Output
DeepSeek: DeepSeek V3 leadsDeepSeek: DeepSeek V3
164K tokens
xAI: Grok 4 Fast
30K tokens
Recency
DeepSeek: DeepSeek V3
Dec 2024
xAI: Grok 4 Fast
Sep 2025
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