xAI: Grok 4.20 (Non-Reasoning) API
Grok-4.20-beta-0309-non-reasoning is the ultra-fast, efficiency-first variant of the Grok-4.20 family. Released as part of the March 2026 update, this model bypasses the "Reasoning Trace" (Chain-of-Thought) layers to provide near-instantaneous responses for high-volume data processing. It is powered by the Colossus supercluster and features a "Rapid Learning" architecture that incorporates real-time X platform data with millisecond latency. This model is ideal for tasks where immediate pattern recognition, fast drafting, or real-time information retrieval from X (Twitter) is required, offering the lowest hallucination rate in the non-reasoning class through its "Society of Mind" multi-agent verification (performed silently in the background).
- Context window: 2,000,000 tokens
- Max output: 2,000,000 tokens
- Input: text, image
- Output: text
- Tool calling: Supported
- File input: Supported
- Released: 2026-03-08
- Knowledge cutoff: 2026-02-28
Frequently Asked Questions
What is the context window of Grok 4.20 (Non-Reasoning)?
Grok 4.20 (Non-Reasoning) supports a context window of up to 2,000,000 tokens.
Does Grok 4.20 (Non-Reasoning) support function calling?
Yes. Grok 4.20 (Non-Reasoning) supports tool / function calling.
What is the knowledge cutoff of Grok 4.20 (Non-Reasoning)?
The knowledge cutoff of Grok 4.20 (Non-Reasoning) is 2026-02-28.