xAI: Grok 3 Mini Beta

by xAI

Grok 3 Mini is a lightweight, smaller thinking model. Unlike traditional models that generate answers immediately, Grok 3 Mini thinks before responding. It’s ideal for reasoning-heavy tasks that don’t demand extensive domain knowledge, and shines in math-specific and quantitative use cases, such as solving challenging puzzles or math problems. Transparent "thinking" traces accessible. Defaults to low reasoning, can boost with setting `reasoning: { effort: "high" }` Note: That there are two xAI endpoints for this model. By default when using this model we will always route you to the base endpoint. If you want the fast endpoint you can add `provider: { sort: throughput}`, to sort by throughput instead.

Avg Score

93.8%

12 answers

Avg Latency

23.3s

8 runs

Pricing

$0.30

input

$0.50

output

per 1M tokens

Context

131K

tokens

Alternatives

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No alternatives found

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Other Models from xAI

Compare performance with other models from the same creator

Model	Score	Latency	Cost/1M
xAI: Grok 3	93.8%	24.7s	$9.00
xAI: Grok 3 Beta	91.7%	26.8s	$9.00
xAI: Grok Code Fast 1	89.2%	16.1s	$0.85
xAI: Grok 3 Mini	87.7%	22.0s	$0.40
xAI: Grok 4.1 Fast	81.4%	14.2s	$0.35
xAI: Grok 4	81.2%	43.0s	$9.00
xAI: Grok 4 Fast	79.3%	18.3s	$0.35

Benchmark Performance

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Price vs Performance

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Current model (baseline)

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Score Over Time

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Benchmark Activity

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Quickstart

Get started with this model using OpenRouter

View on OpenRouter

import { OpenRouter } from "@openrouter/sdk";

const openrouter = new OpenRouter({
  apiKey: "<OPENROUTER_API_KEY>"
});

const completion = await openrouter.chat.completions.create({
  model: "x-ai/grok-3-mini-beta",
  messages: [
    {
      role: "user",
      content: "Hello!"
    }
  ]
});

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

Get your API key at openrouter.ai/keys