Grok

Grok models are fast conversational models.

Models

Model	Code	Notes
Grok 4.5	grok-4.5	Latest flagship.
Grok 4.20 (Non-Reasoning)	grok-4-20-non-reasoning	Fast, non-reasoning.
Grok 4.20 (Reasoning)	grok-4-20-reasoning	Reasoning variant.
Grok 4.3	grok-4.3	High capability.
Grok 4.1 Fast	grok-4-1-fast-reasoning	Optimised for speed.

Capabilities

• tools, tool_choice
• temperature, top_p, max_tokens, response_format

See Parameter Support by Model for the full matrix.

Example

from openai import OpenAI

client = OpenAI(base_url="https://llm.siraya.ai/v1", api_key="<API_KEY>")
resp = client.chat.completions.create(
    model="grok-4-1-fast-reasoning",
    messages=[{"role": "user", "content": "Tell me a joke."}],
)
print(resp.choices[0].message.content)