Compare Grok 4.1 Fast NON Reasoning (X Ai) and Grok 4.20 Reasoning (X Ai) by price, context, capabilities, and latency.
Side by side
Compare price, provider, context, capabilities, latency, and source basis.
| Model | Provider | Input | Output | Context | Capabilities | Best for | Latency | Status | Source |
|---|---|---|---|---|---|---|---|---|---|
| Grok 4.1 Fast NON Reasoningx-ai/grok-4.1-fast-non-reasoning | X Ai | $0.029 / 1M tokens | $0.072 / 1M tokens | — | Streaming | General chat via X Ai, API workloads | 1000-3000ms | Catalog | Platform curated |
| Grok 4.20 Reasoningx-ai/grok-4.20-reasoning | X Ai | $0.181 / 1M tokens | $0.362 / 1M tokens | — | Streaming | General chat via X Ai, API workloads | 1000-3000ms | Catalog | Platform curated |
FAQ
Grok 4.1 Fast NON Reasoning is cheaper ($0.029 / 1M tokens input / $0.072 / 1M tokens output) vs Grok 4.20 Reasoning ($0.181 / 1M tokens input / $0.362 / 1M tokens output). Actual cost depends on your input/output token mix — estimate it with the pricing calculator.
Both offer the same context window: — tokens.
Both target High quality. Pick Grok 4.1 Fast NON Reasoning to optimize cost, or Grok 4.1 Fast NON Reasoning for the longer context window. Test both on real prompts before committing production traffic.