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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Pricing-50%

Pay-as-you-go rates for this model. More details can be found here.

Input Tokens (1M)

$1.00

Cached Input Tokens (1M)

$0.10

Output Tokens (1M)

$3.00

Capabilities

Input Modalities

TextImage

Output Modalities

Text

Supported Parameters

Available parameters for API requests

Max Completion TokensResponse FormatTemperatureTool ChoiceToolsTop PWeb Search OptionsParallel Tool CallsReasoning Effort

Usage Analytics

Token usage of this model on our platform

Throughput

Time-To-First-Token (TTFT)

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)