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grok-3-mini-fast API on AvalAI

xai/grok-3-mini-fast

grok-3-mini-fast is an AI model from xAI that is available through AvalAI's OpenAI-compatible API.

Open dashboardCompare

Price display scale

Input price$0.60 / 1M tokens

Output price$4.00 / 1M tokens

Context window131,072 tokens

Maximum output131,072 tokens

Use grok-3-mini-fast with the AvalAI API

Keep the API key in an environment variable and send requests from server-side code.

Bash

curl https://api.avalai.ir/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $AVALAI_API_KEY" \
  -d '{"model": "xai/grok-3-mini-fast", "messages": [{"role": "user", "content": "Give a concise, practical solution."}]}'

Python

import os
from openai import OpenAI

client = OpenAI(
    api_key=os.environ["AVALAI_API_KEY"],
    base_url="https://api.avalai.ir/v1",
)

response = client.chat.completions.create(
    model="xai/grok-3-mini-fast",
    messages=[{"role": "user", "content": "Give a concise, practical solution."}],
)

print(response.choices[0].message.content)

JavaScript

import OpenAI from "openai";

const client = new OpenAI({
  apiKey: process.env.AVALAI_API_KEY,
  baseURL: "https://api.avalai.ir/v1",
});

const response = await client.chat.completions.create({
  model: "xai/grok-3-mini-fast",
  messages: [{ role: "user", content: "Give a concise, practical solution." }],
});

console.log(response.choices[0].message.content);

Create an API keyRead the quickstart

Capabilities and endpoints

• function_calling
• prompt_caching
• reasoning
• tool_choice
• web_search

grok-3-mini-fast rate limits

Tier	RPM	TPM
0	3	40,000
2	500	2,000,000
3	800	4,000,000
4	1,200	6,000,000
5	1,500	10,000,000

Related models

• grok-3-mini-fast-latest
• grok-3-mini-fast-beta
• grok-3-mini-latest
• grok-3-mini-beta

Frequently asked questions

What is the grok-3-mini-fast API on AvalAI?

Create an AvalAI API key and send the model ID xai/grok-3-mini-fast to one of the supported endpoints shown on this page.

How much does the grok-3-mini-fast API cost on AvalAI?

The grok-3-mini-fast API on AvalAI costs $0.60 per 1M input tokens and $4.00 per 1M output tokens.

What is the token cost for grok-3-mini-fast?

Current AvalAI pricing for grok-3-mini-fast is $0.60 / 1M tokens for input and $4.00 / 1M tokens for output.

What is the grok-3-mini-fast context window?

The recorded maximum input context for grok-3-mini-fast is 131,072 tokens.

Third-party data and freshness

• Pricing, availability, endpoints, and rate limits: AvalAI structured data (authoritative)