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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)
Input
$2.00
per 1M tokens
Output
$6.00
per 1M tokens
Blended
$3.00
per 1M tokens
Cheaper than 20% of models. Median price is $0.56/1M tokens.
Daily
$3.00
Monthly
$90.00
Context Window
2.0M
tokens
Larger than 98% of models
Context Window Comparison
Price/1M
$3.00
498th cheapest
436% above median
Top 80%
Context Window
2.0M
1st largest
Top 2%