Grok 4.20 Beta 0309 (Reasoning) is a text-based AI model by xAI. It features 246 tok/s output speed, $2.00/1M input tokens pricing. It scores 48.5 on the intelligence index.
Output Speed
246 tok/s
Latency (TTFT)
11.75s
Blended Price
$3.00/M
| Input (Prompt) | $2.00 |
| Output (Completion) | $6.00 |
| Cache Read | Free |
| Cache Write | Free |
| Context Length | N/A |
| Max Output Tokens | N/A |
| Input Modalities | Text |
| Output Modalities | Text |
| Tokenizer | N/A |
Grok 4.20 Beta 0309 (Reasoning) costs $2.00/1M input tokens and $6.00/1M output tokens.
Yes, Grok 4.20 Beta 0309 (Reasoning) has a strong coding score of 42.2, placing it among the top coding models.
Grok 4.20 Beta 0309 (Reasoning) generates output at 246 tok/s. Time to first token is 11.75s.
No, Grok 4.20 Beta 0309 (Reasoning) is a paid model. Check the free models page for zero-cost alternatives.
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See the alternatives section above for models with similar capabilities. You can also compare Grok 4.20 Beta 0309 (Reasoning) head-to-head with any model on our comparison page.