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)
| Signal | Strength | Weight | Impact |
|---|---|---|---|
| Capabilitiesjust now | 100 | 30% | +30.0 |
| Context Windowjust now | 100 | 15% | +15.0 |
| Recencyjust now | 100 | 15% | +15.0 |
| Output Capacityjust now | 20 | 15% | +3.0 |
| Pricingjust now | 6 | 25% | +1.5 |
Community and practitioner feedback adds real-world signal on top of benchmarks and pricing.
Share your experience with Grok 4.20 Beta and help the community make better decisions.
Cost Estimator
You save $11.14/month vs category average