xAI: Grok 4.20 Beta

x-ai/grok-4.20-beta

Released Mar 12, 20262,000,000 context

$2/M input tokens$6/M output tokens$5/K web search

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

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xAI: Grok 4.20 Beta

x-ai/grok-4.20-beta

Released Mar 12, 20262,000,000 context

$2/M input tokens$6/M output tokens$5/K web search

Reasoning can be enabled/disabled using the reasoning enabled parameter in the API. Learn more in our docs

Recent activity on Grok 4.20 Beta

Total usage per day on OpenRouter

Prompt

41.7M

Completion

1.06M

Reasoning

596K

Prompt tokens measure input size. Reasoning tokens show internal thinking before a response. Completion tokens reflect total output length.

xAI: Grok 4.20 Beta – Recent Activity and Usage Stats | OpenRouter