Free credit to start. Top up from $5. Create a key
LLM Gateway
xAI · Text

Grok 4.20 Multi-Agent Beta API pricing

Grok 4.20 Multi-Agent Beta is in the catalog and available on request: ask and it is normally enabled within a business day, at the price shown.

Context window
2M tokens
Type
Text
Capabilities
vision · reasoning
Availability
On request
Model id
xai/grok-4.20-multi-agent-beta
What you pay
Input, per 1M tokens
$1.25
Output, per 1M tokens
$2.50
vendor listyou pay

List price, no platform fee. Billed per request from prepaid credits; every response reports the cost.

Use it

Point the OpenAI SDK at OSMEXO and use xai/grok-4.20-multi-agent-beta

The base URL and the key are the only changes. Streaming, tool calls, structured output and vision behave as they do upstream, and every response carries the billed cost beside the list price.

Python · openai sdk
from openai import OpenAI

client = OpenAI(
    base_url="https://api.osmexo.com/v1",   # was the vendor's URL
    api_key="osm-...",
)
r = client.chat.completions.create(
    model="xai/grok-4.20-multi-agent-beta",
    messages=[{"role": "user", "content": "Hello"}],
)
Trust

Check it is the real Grok 4.20 Multi-Agent Beta, with your own key

The same battery we run before a route goes live: tokenizer fingerprint, knowledge cutoff, hidden-prompt probe and exact-output tasks, scored 0 to 100 against the vendor’s own API. One OpenRouter key verifies any text model; a direct xAI key works too. Exit code 0 means the same model.

bash · verify with your own vendor key
curl -fsSLO https://dashboard.osmexo.com/verify.mjs
OSMEXO_API_KEY=osm-... VENDOR_API_KEY=sk-or-... node verify.mjs --model xai/grok-4.20-multi-agent-beta --vendor openrouter
Questions

About Grok 4.20 Multi-Agent Beta on OSMEXO

How much does Grok 4.20 Multi-Agent Beta cost through OSMEXO?
$1.25 per 1M input tokens and $2.50 per 1M output tokens, billed per request from prepaid credits. That is xAI’s list price; there is no platform fee on top. The price on this page refreshes from the catalog every few minutes.
Is this the same Grok 4.20 Multi-Agent Beta as calling xAI directly?
Yes. Every route for Grok 4.20 Multi-Agent Beta is probed against the vendor’s own API before it serves anyone: tokenizer fingerprint, knowledge cutoff, a hidden-prompt probe and exact-output tasks, scored 0 to 100 with 85 as the approval threshold. You can run the same check from your machine with your own vendor key; the command is on this page.
How do I call Grok 4.20 Multi-Agent Beta with the OpenAI SDK?
Point the official OpenAI SDK at https://api.osmexo.com/v1 with your OSMEXO key and use the model id xai/grok-4.20-multi-agent-beta. Streaming, tool calls, structured output and vision work as they do upstream. Coding agents such as OpenCode, Cline, Roo Code, Continue and Aider take the same base URL and key.
Why is Grok 4.20 Multi-Agent Beta “on request”?
The model is in the catalog but not yet enabled for every key, usually because its routes are still being verified or a vendor key is pending. Ask from the contact form or the dashboard and it is normally enabled within a business day.
More from the catalog

All models and prices →

Start in five minutes

Same models. Same code. Smaller bill.

Create a key, change the base URL, and see on the very first response what you saved.