Grok 4.1 Fast vs Grok 4.20 (Non-Reasoning)
Both have similar output pricing, while Grok 4.20 (Non-Reasoning) offers a larger context window. Choose Grok 4.1 Fast or Grok 4.20 (Non-Reasoning) based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | Grok 4.1 Fast | Grok 4.20 (Non-Reasoning) |
|---|---|---|
| Provider | xAI | xAI |
| Input / 1M tokens | — | $1.25 |
| Output / 1M tokens | — | $2.50 |
| Context window | — | 1M |
| Parameters | — | — |
| Open weights | No | No |
| Released | Nov 2025 | Mar 2026 |
FAQ
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.