xAI: grok-4.20-non-reasoning
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).
Inputs used for the providers' own purposes
At least one provider of this model uses your inputs for its own purposes, for example to train AI models. Do not enter personal data of third parties or sensitive data. You can object to this use at any time in your account settings or via "Manage consents" in the chat.
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Supported parameters
All providers = every upstream serving this model supports it. Some providers = depends on which upstream handles the request. Default = the value sent when you leave the parameter unset.
| Parameter | Providers | Default |
|---|---|---|
| frequency_penalty | Some providers | Not sent by default |
| include_reasoning | All providers | - |
| logprobs | All providers | - |
| max_tokens | All providers | - |
| presence_penalty | Some providers | Not sent by default |
| reasoning | All providers | - |
| repetition_penalty | Some providers | Not sent by default |
| response_format | All providers | - |
| seed | All providers | - |
| structured_outputs | All providers | - |
| temperature | All providers | Not sent by default |
| tool_choice | All providers | - |
| tools | All providers | - |
| top_k | Some providers | Not sent by default |
| top_logprobs | All providers | - |
| top_p | All providers | Not sent by default |