Grok 4 Fast
Grok 4 Fast is xAI's language model with a 2.0M context window and up to 30K output tokens, available from 2 providers, starting at $0.200 / 1M input and $0.500 / 1M output. A cost-efficient multimodal variant of Grok 4 with a 2-million-token context window, available in both reasoning and non-reasoning configurations.
xAI's language model with a 2.0M context window and up to 30K output tokens, available from 2 providers, starting at $0.200 / 1M input and $0.500 / 1M output. A cost-efficient multimodal variant of Grok 4 with a 2-million-token context window, available in both reasoning and non-reasoning configurations.23.1#109 |
19.0#106 |
41.3#95 |
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0.1#180 |
0.4#114 |
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0.32s#150 |
0.3#114 |
0.4#95 |
0.2#151 |
0.1#98 |
0.6#66 |
177.1#24 |
Capabilities
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Output1/5
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Capabilities2/13
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Pricing by Provider
| Provider | Standard | ||
|---|---|---|---|
| Input $ / 1M | Output $ / 1M | Cache Read $ / 1M | |
 OpenRouter | $0.200 | $0.500 | $0.050 |
 Oracle Cloud (OCI) | $5.00 | $25.00 | N/A |
Cost Calculator
Preset:
Compares every provider & tier in USD
Versions
| Version | Released | Context | Input / 1M | Output / 1M | Status |
|---|---|---|---|---|---|
| Grok 4.20 Multi-Agent | 2.0M | $2.00 | $6.00 | Available | |
| Grok 4.20 Multi Agent Beta | 2.0M | $2.00 | $6.00 | Available | |
| Grok 4 20 Non-Reasoning | 2.0M | — | — | Available | |
| Grok 4 20 Reasoning | 2.0M | — | — | Available | |
| Grok 4 20 | — | 131K | $3.00 | $15.00 | Available |
| Grok 4.1 Fast | 2.0M | $0.200 | $0.500 | Available | |
| Grok 4.1 Fast Non-Reasoning | 2.0M | $0.200 | $0.500 | Available | |
| Grok 4.1 Fast Reasoning | 2.0M | $0.200 | $0.500 | Available | |
| Grok 4 Non-Reasoning | 2.0M | $2.00 | $6.00 | Available | |
| Grok 4 Reasoning | 2.0M | $2.00 | $6.00 | Available | |
| Grok 4 Fast | 2.0M | $0.200 | $0.500 | Current |