Grok 4.1 Fast vs Hy3
Grok 4.1 Fast is cheaper on output tokens, while Grok 4.1 Fast offers a larger context window. Choose Grok 4.1 Fast or Hy3 based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | Grok 4.1 Fast | Hy3 |
|---|---|---|
| Provider | Ofox | Tencent |
| Input / 1M tokens | $0.20 | $0.13 |
| Output / 1M tokens | $0.50 | $0.53 |
| Context window | 2M | 262K |
| Parameters | — | — |
| Open weights | No | — |
| Released | Nov 2025 | — |
| LiveBench score | 60.1 | — |
| LMArena (Chatbot Arena) Elo score | 1408 | 1437 |
| LMArena WebDev Elo score | 1242 | 1507 |
| LMArena Vision Elo score | 1201 | — |
FAQ
Is Grok 4.1 Fast or Hy3 cheaper?
Grok 4.1 Fast is cheaper on output tokens ($0.50 vs $0.53 per 1M).
Which has the larger context window, Grok 4.1 Fast or Hy3?
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.