Grok 4.20 (Reasoning)
By xAI. Unknown parameters, a context window of 1,000,000 tokens, licence Unknown.
Facts
- Released
- 2026-03-09 the release date models.dev records models.dev, read
- Licence
- Unknown
- Open weights
- No models.dev records whether the weights are open models.dev, read
- Parameters
- Unknown
- Active parameters
- Unknown
- Knowledge cutoff
- Unknown
- Context window
- 1,000,000 tokens the context limit models.dev records for the maker's own API models.dev, read
- Longest output
- 30,000 tokens the output limit models.dev records for the maker's own API models.dev, read
- Tool calling
- Yes models.dev records tool_call as true models.dev, read
- Structured output
- Yes models.dev records structured_output as true models.dev, read
- Reasoning controls
- Yes models.dev records reasoning as true models.dev, read
- Inputs and outputs
- text, image, pdf in, text out models.dev, read
- Good for
- Vision: models.dev lists images among its inputs models.dev, read
- Reasoning: models.dev records it as a reasoning model models.dev, read
Prices
| Provider | Input | Output | Context | As of | Source |
|---|---|---|---|---|---|
| xAI direct | 1.25 USD | 2.50 USD | 1,000,000 | older than 30 days; check the provider | models.dev, read |
Run it on your own hardware
No source lists weight files or a parameter count for this model, so its memory needs are Unknown.
Use it from your harness
No endpoint in this directory serves this model yet.
Sources of this page
- models.dev/api.json, read
Paid links
No link in this directory is a paid link or an ad, and no listing is paid for. The order and the contents of every list come from the sources named on this page.