Grok 4.20
Model Information
| Slug | grok-4-20 |
|---|---|
| LLM.txt | View |
| Release Date | March 31, 2026 New |
Organization
| Name | xAI |
|---|---|
| Website | https://x.ai/ |
Model Description
Grok 4.20 is xAI's newest flagship model with industry-leading speed and agentic tool calling capabilities. It combines the lowest hallucination rate on the market with strict prompt adherance, delivering consistently precise and truthful responses.
Reasoning can be enabled/disabled using the `reasoning` `enabled` parameter in the API. [Learn more in our docs](https://openrouter.ai/docs/use-cases/reasoning-tokens#controlling-reasoning-tokens)
Reasoning can be enabled/disabled using the `reasoning` `enabled` parameter in the API. [Learn more in our docs](https://openrouter.ai/docs/use-cases/reasoning-tokens#controlling-reasoning-tokens)
Available at 4 Providers
| Provider | Type | Model Name | Original Model | Input ($/1M) | Output ($/1M) | Free | Actions | |
|---|---|---|---|---|---|---|---|---|
|
Kilo Code |
Code
|
xAI: Grok 4.20
|
x-ai/grok-4.20
|
$2.00 | $6.00 | ||
|
OpenRouter |
Chat
Code
|
Grok 4.20
|
x-ai/grok-4.20
|
$2.00 | $6.00 | ||
|
Cursor |
Code
|
Grok 4.20
|
grok-4-20
|
- | - | ||
|
|
Cursor |
Code
|
Grok 4.20 Thinking
|
grok-4-20-thinking
|
- | - |