Grok 4 API
x-ai/grok-4
Call Grok 4 through UberLLM’s OpenAI-compatible API — routed automatically to the cheapest healthy seller. xAI · 2,000,000 token context. Fee included.
Try it live — no signup
Demo · a few prompts a day, no sign-up
How to use Grok 4 with the OpenAI SDK
Already using the OpenAI SDK? Change one line — the base URL — and call Grok 4 with your existing code. Anthropic SDKs work against https://api.uberllm.dev/v1/messages.
python
from openai import OpenAI
client = OpenAI(
base_url="https://api.uberllm.dev/v1",
api_key="ull_your_key_here",
)
resp = client.chat.completions.create(
model="x-ai/grok-4",
messages=[{"role": "user", "content": "Hello!"}],
)
print(resp.choices[0].message.content)Grok 4 API — FAQ
How much does the Grok 4 API cost?
Grok 4 is on the live market, but no seller is serving it through UberLLM right now.
How do I call Grok 4 via API?
Use any OpenAI-compatible SDK: set the base URL to https://api.uberllm.dev/v1, your UberLLM API key, and model "x-ai/grok-4". Anthropic SDKs work via https://api.uberllm.dev/v1/messages.
Is Grok 4 OpenAI-compatible on UberLLM?
Yes. Every model on UberLLM — including Grok 4 — is served through one OpenAI-compatible endpoint, so you change only the base URL and key.