DeepSeek V4.1 Flash vs xAI Grok 4.1 Fast Non-Reasoning
xAI Grok 4.1 Fast Non-Reasoning is cheaper on output tokens, while xAI Grok 4.1 Fast Non-Reasoning offers a larger context window. Choose DeepSeek V4.1 Flash or xAI Grok 4.1 Fast Non-Reasoning based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | DeepSeek V4.1 Flash | xAI Grok 4.1 Fast Non-Reasoning |
|---|---|---|
| Provider | DeepSeek | Helicone |
| Input / 1M tokens | $0.02 | $0.20 |
| Output / 1M tokens | $1.00 | $0.50 |
| Context window | 1M | 2M |
| Parameters | — | — |
| Open weights | — | No |
| Released | — | Nov 2025 |
| LMArena (Chatbot Arena) Elo score | 1464 | — |
| GPQA Diamond score | 93.2 | — |
| LMArena WebDev Elo score | 1664 | — |
| LMArena Vision Elo score | 1278 | — |
| Epoch Capabilities Index score | 156 | — |
| LiveBench score | — | 31.6 |
FAQ
Is DeepSeek V4.1 Flash or xAI Grok 4.1 Fast Non-Reasoning cheaper?
xAI Grok 4.1 Fast Non-Reasoning is cheaper on output tokens ($0.50 vs $1.00 per 1M).
Which has the larger context window, DeepSeek V4.1 Flash or xAI Grok 4.1 Fast Non-Reasoning?
xAI Grok 4.1 Fast Non-Reasoning 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.