Grok 4.20 Beta 0309 (reasoning)

grok-4.20-beta-0309-reasoning · 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.

API Pricing

Input$2 / 1M tokens
Output$6 / 1M tokens
Cache read$0.2 / 1M tokens

Specifications

Context2M tokens
Modalitiestext, image
Featuresthinking, tool calling, function calling, structured outputs, long context

Frequently asked questions

What is Grok 4.20 Beta 0309 (reasoning)?

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.

What is the context length of Grok 4.20 Beta 0309 (reasoning)?

Grok 4.20 Beta 0309 (reasoning) has a 2,000,000 token context window.

How much does Grok 4.20 Beta 0309 (reasoning) cost?

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.

What modalities does Grok 4.20 Beta 0309 (reasoning) support?

Grok 4.20 Beta 0309 (reasoning) accepts text and image input.

What capabilities does Grok 4.20 Beta 0309 (reasoning) support?

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.

How do I call Grok 4.20 Beta 0309 (reasoning) via API?

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.

Who created Grok 4.20 Beta 0309 (reasoning)?

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.