Reasoning · language

Use o4-mini with Ruby

Updated 2026-05-21 · By XALEN

How to use o4-mini (Reasoning, ~200B) with Ruby. Install, authenticate, and make your first API call in minutes. Working code example included.

Model

o4-mini

~200B · 200K context · $0.03 input

Framework

Ruby

language · gem install ruby-openai

1. Install

gem install ruby-openai

2. Code

require "openai"

client = OpenAI::Client.new(
  access_token: "xln_test_YOUR_KEY",
  uri_base: "https://api.xalen.io/v1"
)

response = client.chat(
  parameters: {
    model: "o4-mini",
    messages: [{ role: "user", content: "Hello from Ruby!" }]
  }
)
puts response.dig("choices", 0, "message", "content")

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Last updated: 2026-05-21