xAI: Grok 4.20
Grok
Multimodal
Paid
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)
Parameters
-
Context Window
2,000,000
tokens
Input Price
$2
per 1M tokens
Output Price
$6
per 1M tokens
Capabilities
Model capabilities and supported modalities
Performance
Reasoning
Excellent reasoning capabilities with strong logical analysis
Math
-
Coding
-
Knowledge
-
Modalities
Input Modalities
text,image
Output Modalities
text
LLM Price Calculator
Calculate the cost of using this model
$0.003000
$0.018000
Input Cost:$0.003000
Output Cost:$0.018000
Total Cost:$0.021000
Estimated usage: 4,500 tokens
Monthly Cost Estimator
Based on different usage levels
Light Usage
$0.0800
~10 requests
Moderate Usage
$0.8000
~100 requests
Heavy Usage
$8.0000
~1000 requests
Enterprise
$80.0000
~10,000 requests
Note: Estimates based on current token count settings per request.
Last Updated: 2026/04/01