Grok 4 vs Grok 4.1 Fast Non Reasoning
Grok 4.1 Fast Non Reasoning is cheaper on output tokens, while Grok 4.1 Fast Non Reasoning offers a larger context window. Choose Grok 4 or Grok 4.1 Fast Non Reasoning based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | Grok 4 | Grok 4.1 Fast Non Reasoning |
|---|---|---|
| Provider | ZenMux | ZenMux |
| Input / 1M tokens | $3.00 | $0.20 |
| Output / 1M tokens | $15.00 | $0.50 |
| Context window | 256K | 2M |
| Parameters | 3T | — |
| Open weights | No | No |
| Released | Jul 2025 | Nov 2025 |
FAQ
Is Grok 4 or Grok 4.1 Fast Non Reasoning cheaper?
Grok 4.1 Fast Non Reasoning is cheaper on output tokens ($0.50 vs $15.00 per 1M).
Which has the larger context window, Grok 4 or Grok 4.1 Fast Non Reasoning?
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.