xAI: grok-4.20-reasoning
Grok-4.20-beta-0309-reasoning is the elite, high-intelligence tier of the Grok-4.20 family. It is built on a revolutionary "Society of Mind" multi-agent architecture, where four specialized agents (Captain, Research, Logic, and Critic) work in parallel to debate and verify findings before delivering the final response. Trained on the Colossus 200k GPU cluster using advanced Reinforcement Learning (RL), this model is specifically optimized for Expert-level tasks in medicine, legal analysis, and complex software architecture. It features "Chain-of-Thought" (CoT) reasoning that is 6x more compute-efficient than previous versions, allowing it to solve "Humanity's Last Exam" (HLE) level problems with unprecedented accuracy.
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 |