# Grok 4.20 Beta

Grok 4.20 Beta 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)

## Model Information

- **Organization**: [xAI](/llm.txt)
- **Slug**: grok-4-20-beta
- **Available at Providers**: 6
- **Release Date**: March 12, 2026

## Providers

| Provider | Name | $ Input (per 1M) | $ Output (per 1M) | Free | Link |
|----------|------|-----------------|------------------|------|------|
| [Airforce API](/llm/airforce.txt) | grok-4.20-beta |  |  |  |  |
| [FastRouter](/llm/fastrouter.txt) | xAI: Grok 4.20 Beta | 2.00 | 6.00 |  | [View](https://fastrouter.ai/models/x-ai/grok-4.20-beta) |
| [Kilo Code](/llm/kilocode.txt) | xAI: Grok 4.20 Beta | 2.00 | 6.00 |  |  |
| [OpenRouter](/llm/openrouter.txt) | Grok 4.20 Beta | 2.00 | 6.00 |  | [View](https://openrouter.ai/x-ai/grok-4.20-beta-20260309) |
| [Venice](/llm/venice.txt) | Grok 4.20 Beta | 2.50 | 7.50 |  |  |
| [Writingmate](/llm/writingmate.txt) | xAI: Grok 4.20 Beta |  |  |  | [View](https://writingmate.ai/models/x-ai/grok-4.20-beta) |

---

[← Back to all providers](/llm.txt)