by Grok
Grok 4.20 Beta is our latest flagship model, offering industry-leading speed and agent tool-invocation capabilities. It combines the lowest hallucination rate on the market with strict prompt adherence, enabling it to consistently deliver precise and factual responses.
Grok 4.20 Beta is our latest flagship model, offering industry-leading speed and agent tool-invocation capabilities. It combines the lowest hallucination rate on the market with strict prompt adherence, enabling it to consistently deliver precise and factual responses.
grok-4.20-beta-0309-reasoning has a 2,000,000 token context window.
On AIHubMix, grok-4.20-beta-0309-reasoning costs $2 per million input tokens and $6 per million output tokens. Cached input reads are billed at $0.2 per million tokens.
grok-4.20-beta-0309-reasoning accepts text and image input.
grok-4.20-beta-0309-reasoning supports thinking, tool calling, function calling, structured outputs and long context. Per-protocol parameter support is listed in the capability table on this page.
grok-4.20-beta-0309-reasoning is available through the AIHubMix unified API. The API is OpenAI-compatible: point your OpenAI SDK at https://aihubmix.com/v1, use your AIHubMix API key, and set the model name to grok-4.20-beta-0309-reasoning — no other code changes needed.
grok-4.20-beta-0309-reasoning is developed by Grok. AIHubMix aggregates it alongside models from other providers behind one API and one bill.
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Use grok-4.20-beta-0309-reasoning via the AIHubMix unified API — one interface for every major LLM.