DeepSeek V4.1 Flash vs Grok 4.1 Fast
Both have similar output pricing, while Grok 4.1 Fast offers a larger context window. Choose DeepSeek V4.1 Flash or Grok 4.1 Fast based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | DeepSeek V4.1 Flash | Grok 4.1 Fast |
|---|---|---|
| Provider | DeepSeek | Ofox |
| Input / 1M tokens | $0.05 | $0.20 |
| Output / 1M tokens | $0.50 | $0.50 |
| Context window | 1M | 2M |
| Parameters | — | — |
| Open weights | — | No |
| Released | — | Nov 2025 |
| Epoch Capabilities Index score | 159 | — |
| GPQA Diamond score | 93.2 | — |
| LMArena (Chatbot Arena) Elo score | 1465 | 1408 |
| LMArena WebDev Elo score | 1665 | 1242 |
| LMArena Vision Elo score | 1278 | 1201 |
| LiveBench score | — | 60.1 |
FAQ
Is DeepSeek V4.1 Flash or Grok 4.1 Fast cheaper?
DeepSeek V4.1 Flash and Grok 4.1 Fast have comparable output pricing.
Which has the larger context window, DeepSeek V4.1 Flash or Grok 4.1 Fast?
Grok 4.1 Fast has the larger context window (2M tokens).
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.