Grok 4.20 Beta

Chat Completions

grok-4.20-beta

xAI|Created Mar 15, 2026|2M context

Chat Completions

Grok 4.20 Beta is xAI’s latest flagship model, offering industry-leading speed and advanced agentic tool-calling capabilities. It features one of the lowest hallucination rates on the market and strong prompt adherence, enabling consistently accurate and reliable responses.

Overview Specifications Activity Performance Uptime Examples API Reference

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Endpoints and request shape

This page collects the public integration surface for the model: supported endpoints, available request parameters, and example calls through the NagaAI API.

Chat Completions

Code Example

Example code for using this model through our API with Python (OpenAI SDK) or cURL. Replace placeholders with your API key and model ID.

Basic request example. Ensure API key permissions. For more details, see our documentation.

from openai import OpenAI

client = OpenAI(
    base_url="https://api.naga.ac/v1",
    api_key="YOUR_API_KEY",
)

resp = client.chat.completions.create(
    model="grok-4.20-beta",
    messages=[
        {"role": "user", "content": "What's 2+2?"}
    ],
    temperature=0.2,
)
print(resp.choices[0].message.content)

Supported Parameters

Available parameters for API requests

Max Completion TokensResponse FormatTemperatureTool ChoiceToolsTop PWeb Search OptionsParallel Tool CallsReasoning Effort