We're excited to announce that xAI's complete suite of Grok models is now live on Definable AI. This isn't just another model addition—it's access to some of the most advanced AI capabilities available, including extended context windows up to 2 million tokens, specialized reasoning configurations, image generation, and cutting-edge coding assistance.

Whether you need deep reasoning, lightning-fast responses, stunning image creation, or expert code assistance, xAI's Grok models deliver—and now they're all available in one place on Definable AI.

What Are xAI Grok Models?

xAI, founded by Elon Musk, developed the Grok family of AI models with a focus on reasoning, reliability, and real-world task performance. Unlike generic AI models, Grok models are specifically engineered for different use cases—from quick responses to deep analytical thinking, from creative image generation to specialized coding tasks.

Now, all eight Grok models are accessible on Definable AI, giving you the flexibility to choose the perfect model for each specific task.

Meet the Complete xAI Grok Lineup on Definable AI

Grok 3 Pro

xAI's flagship model with 131K context window, offering advanced reasoning capabilities, function calling, and structured outputs. Designed for general-purpose language understanding, complex coding, and strategic planning with robust performance across diverse applications.

Best for: Comprehensive analysis, strategic planning, complex problem-solving

Grok 3 High

Grok 3 mini with high reasoning effort configuration, featuring 131K context window and maximum thinking time for complex problems. Returns raw thinking trace while excelling at logic-based tasks requiring deep analysis and mathematical reasoning with detailed steps.

Best for: Mathematical problems, logical puzzles, tasks requiring detailed reasoning traces

Grok 3 Low

Grok 3 mini with low reasoning effort configuration, optimized for quick responses with minimal thinking time across 131K context window. Returns raw thinking trace while delivering fast logical operations and simple problem solving with minimal overhead for rapid completion.

Best for: Quick queries, simple logic tasks, rapid responses when speed matters

Grok 2 Image Pro

xAI's image generation model for creating high-quality images from text prompts, using OpenAI-compatible API endpoints. Ideal for creative applications, visual content generation, and artistic illustrations.

Best for: Image generation, visual content creation, artistic projects

Grok 4 Pro

xAI's advanced reasoning model released July 2025 with 256K context window, featuring parallel tool calling, structured outputs, and multimodal vision capabilities. Designed for high-throughput complex reasoning tasks with comprehensive image and text analysis.

Best for: Complex reasoning with image analysis, multimodal tasks, advanced applications

Grok 4.1 Fast

xAI's best tool-calling model with 2M context window, excelling at complex real-world agentic tasks like customer support and finance. Delivers rapid task completion with 50% lower hallucination rate compared to Grok 4 Fast, setting new standards in factuality and reliability.

Best for: Agentic tasks, customer support automation, financial analysis, factual accuracy

Grok 4 Fast Pro

xAI's cost-efficient model with 2M token context window featuring unified reasoning and non-reasoning architecture, cutting-edge web and X search capabilities. Achieves comparable performance to Grok 4 while using 40% fewer thinking tokens on average for optimal price-performance.

Best for: High-volume tasks, cost-efficient operations, web search integration

Grok Code Fast

xAI's specialized coding model optimized for rapid code generation and development tasks, featuring advanced understanding of programming languages and best practices.

Best for: Code generation, debugging, development tasks, technical documentation

How to Use xAI Models on Definable AI

Getting started with xAI's Grok models is simple and takes less than 5 minutes.

Step 1: Login to Definable AI

Visit www.definable.ai and log into your account. If you don't have an account yet, sign up—it takes less than a minute.

Step 2: Choose Your Plan

Select the plan that matches your needs:

Free Plan (₹0): Test xAI models with limited access

Plus Plan (₹199/month): Regular access to all models including xAI

Pro Plan (₹688/month): Unlimited access to all xAI models and features

Enterprise Plan (₹5,999/month): Team access with advanced features

Pro plan users get full, unlimited access to all eight xAI Grok models.

Step 3: Navigate to Chat

Open the chat interface in Definable AI. You'll see the model selector at the bottom of the screen.

Step 4: Select Your xAI Model

Click on the model dropdown at the bottom of the chat interface. You'll see all eight xAI models listed:

• Grok 3 Pro
• Grok 3 High
• Grok 3 Low
• Grok 2 Image Pro
• Grok 4 Pro
• Grok 4.1 Fast
• Grok 4 Fast Pro
• Grok Code Fast

Choose whichever xAI model fits your current task.

Real-World Examples: xAI Models in Action

Example 1: Image Generation with Grok 2 Image

Step 5: Select Grok 2 Image Model

From the model dropdown, select "Grok 2 Image Pro"

Write Your Prompt:
A futuristic cyberpunk megacity at night, ultra-detailed cinematic wide shot. A glass skybridge plaza suspended high above a neon-lit city, with transparent floors revealing dense skyscrapers far below. People walking across the bridge, some standing, some sitting, wearing futuristic coats and streetwear. Massive holographic billboards and LED panels with Asian typography and symbols glowing in blue, teal, purple, and magenta. Tall sleek skyscrapers with sharp geometric architecture, one central tower rising in the distance with green and cyan lights. Wet reflective surfaces, glowing grid lines embedded in the floor, soft mist and atmospheric haze. Advanced sci-fi streetlights, vending stalls, cyberpunk signage. High realism, ultra sharp focus, global illumination, volumetric lighting, reflections, depth of field. Blade Runner–inspired aesthetic, cinematic sci-fi concept art, 8K quality, photorealistic, dramatic perspective, futuristic urban life.

Generate Image:

Click send and watch as Grok 2 Image creates a stunning, high-quality image from your text prompt in seconds.

Use Cases:

• Marketing materials and social media graphics
• Website imagery and blog illustrations
• Presentation visuals and pitch decks
• Creative projects and artistic concepts
• Product mockups and concept art

Example 2: Quick Query with Grok 4.1 Fast

Step 6: Select Grok 4.1 Fast

Switch to "Grok 4.1 Fast" from the model selector.

Ask Your Question:

If an AI produces a scientific hypothesis that is later experimentally proven true, who is the epistemic author of that knowledge—the AI, the human who validated it, or the dataset that enabled it?At what point does validation transform information into knowledge?

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Get Results:

Within seconds, Grok 4.1 Fast delivers comprehensive, factually accurate analysis with 50% lower hallucination rate than competing models. The 2M context window means it can process vast amounts of information to give you reliable answers.

Use Cases:

• Market research and competitive analysis
• Customer support queries requiring factual accuracy
• Financial data analysis and reporting
• Research synthesis and information gathering
• Real-time decision support

Example 3: Code Debugging with Grok Code Fast

Step 7: Select Grok Code Fast

Switch to "Grok Code Fast" for specialized coding assistance.

Upload Your Code:

const users = []
let isLoggedIn = false

function registerUser(username, password) {
  if (username.length < 3)
    console.log("Username too short")

  users.push({
    id: users.length + 1,
    name: username,
    password: password,
    createdAt: new Date
  })
}

function loginUser(username, password) {
  users.forEach(user => {
    if (user.name == username && user.password = password) {
      isLoggedIn = "true"
      console.log("Login successful")
      return true
    }
  })

  console.log("Invalid credentials")
}

function getUserById(id) {
  return users.filter(u => u.id = id)[0]
}

async function fetchUserProfile(id) {
  const response = fetch("https://api.example.com/user/" + id)
  const data = response.json()
  return data.profile.name
}

function deleteUser(id) {
  for (let i = 0; i <= users.length; i++) {
    if (users[i].id === id) {
      users.splice(i, 1)
    }
  }
}

function calculateUserStats() {
  let totalUsers = users.length
  let activeUsers

  users.map(u => {
    if (u.isActive) {
      activeUsers++
    }
  })

  return {
    total: totalUsers,
    active: activeUsers
  }
}

// ====== TEST EXECUTION ======

registerUser("ab", "12345")
registerUser("john_doe", "password")

loginUser("john_doe", "password")

console.log(getUserById(1))
console.log(fetchUserProfile(1))
console.log(calculateUserStats())

// User management system with fixes for bugs, security, async handling, and best practices.
// - Passwords are hashed using bcrypt for security (install via npm if running in Node.js).
// - IDs are now UUIDs to ensure uniqueness even after deletions.
// - Async operations are properly awaited.
// - Error handling added where appropriate.
// - Refactored into a class for better organization and encapsulation.
// - Used strict equality (===) and proper comparisons.
// - Fixed loops, variable initializations, and logic errors.

const bcrypt = require('bcrypt'); // For password hashing; install with npm install bcrypt
const { v4: uuidv4 } = require('uuid'); // For unique IDs; install with npm install uuid

class UserManager {
  constructor() {
    this.users = [];
    this.isLoggedIn = false; // Global login state (could be per-session in a real app)
  }

  // Registers a user with validation and hashed password.
  async registerUser(username, password) {
    if (username.length < 3) {
      throw new Error('Username must be at least 3 characters long');
    }
    const hashedPassword = await bcrypt.hash(password, 10); // Hash password securely
    const user = {
      id: uuidv4(), // Unique ID
      name: username,
      password: hashedPassword,
      createdAt: new Date(),
      isActive: true // Assume new users are active
    };
    this.users.push(user);
    return user; // Return user for confirmation
  }

  // Logs in a user by checking hashed password.
  async loginUser(username, password) {
    for (const user of this.users) {
      if (user.name === username && await bcrypt.compare(password, user.password)) {
        this.isLoggedIn = true;
        console.log('Login successful');
        return true;
      }
    }
    console.log('Invalid credentials');
    return false;
  }

  // Retrieves user by ID.
  getUserById(id) {
    return this.users.find(u => u.id === id) || null;
  }

  // Fetches user profile from API (properly handles async).
  async fetchUserProfile(id) {
    try {
      const response = await fetch(`https://api.example.com/user/${id}`);
      if (!response.ok) throw new Error('API request failed');
      const data = await response.json();
      return data.profile?.name || 'Unknown';
    } catch (error) {
      console.error('Error fetching profile:', error);
      return null;
    }
  }

  // Deletes a user by ID.
  deleteUser(id) {
    const index = this.users.findIndex(u => u.id === id);
    if (index !== -1) {
      this.users.splice(index, 1);
      return true;
    }
    return false;
  }

  // Calculates user stats.
  calculateUserStats() {
    const totalUsers = this.users.length;
    let activeUsers = 0;
    this.users.forEach(u => {
      if (u.isActive) activeUsers++;
    });
    return { total: totalUsers, active: activeUsers };
  }
}

// ====== TEST EXECUTION ======

(async () => {
  const manager = new UserManager();

  try {
    await manager.registerUser('ab', '12345'); // This will throw an error due to short username
  } catch (e) {
    console.log(e.message);
  }

  await manager.registerUser('john_doe', 'password');
  await manager.loginUser('john_doe', 'password');

  console.log(manager.getUserById(manager.users[0].id)); // Use actual ID
  console.log(await manager.fetchUserProfile(manager.users[0].id));
  console.log(manager.calculateUserStats());
})();

When to Use Each xAI Model

Choose Grok 3 Pro when:

• You need comprehensive, general-purpose AI assistance
• Strategic planning and complex analysis required
• Function calling and structured outputs needed
• Robust performance across diverse applications

Choose Grok 3 High when:

• Solving complex mathematical problems
• Deep logical reasoning required
• You want to see the AI's thinking process
• Maximum thinking time acceptable for accuracy

Choose Grok 3 Low when:

• Quick responses more important than deep analysis
• Simple logical operations needed
• Rapid completion essential
• Straightforward problem solving

Choose Grok 2 Image when:

• Creating visual content from text descriptions
• Marketing materials and social graphics
• Artistic projects and illustrations
• Product mockups and concept visualization

Choose Grok 4 Pro when:

• Complex reasoning with image analysis
• Multimodal tasks combining text and vision
• Parallel tool calling needed
• High-throughput advanced applications

Choose Grok 4.1 Fast when:

• Factual accuracy is critical (50% lower hallucination)
• Customer support automation
• Financial analysis and reporting
• Real-world agentic tasks
• 2M context window needed for massive documents

Choose Grok 4 Fast Pro when:

• Cost efficiency important
• Web and X search integration needed
• High-volume operations
• Comparable performance to Grok 4 at lower token cost

Choose Grok Code Fast when:

• Coding and development tasks
• Debugging and code review
• Technical documentation generation
• Programming language expertise needed

xAI Models + Definable AI Features = Supercharged Productivity

The real power comes from combining xAI models with Definable AI's comprehensive feature set:

xAI + Knowledge Base

Upload your documents to Knowledge Base, then query them with Grok 4.1 Fast's 2M context window for unprecedented document analysis.

Example: Upload 500 pages of company documentation, then ask Grok 4.1 Fast complex questions that require synthesizing information across all documents.

xAI + 500+ Instructions

Combine xAI models with our instruction library for specialized expertise.

Example: Use "Python Expert" instruction with Grok Code Fast for advanced programming assistance.

xAI + MCP Integration

Automate workflows using xAI models through MCP integration.

Example: Set up automated code review using Grok Code Fast, or automated image generation for social posts using Grok 2 Image.

xAI + Multi-Model Comparison

Compare xAI models against Claude, GPT, and Gemini side-by-side.

Example: Ask the same coding question to Grok Code Fast, Claude, and GPT-4, then choose the best solution.

Why xAI on Definable AI Wins

All xAI Models in One Place

No need to manage separate xAI subscriptions or platforms. Access all eight Grok models instantly.

Combined with 30+ Other Features

xAI models work alongside Photo Studio, video generation, AI agents, Knowledge Base, and everything else Definable AI offers.

Compare with Other Models

Use xAI for coding, Claude for analysis, GPT for creativity—all in the same conversation.

Affordable Access

Get all xAI models at ₹688/month (Pro plan) instead of managing separate subscriptions.

Instant Switching

Change between Grok 3 High for deep reasoning and Grok Code Fast for programming in one click.

Getting Started Checklist

✅ Step 1: Sign up at www.definable.ai (Free plan available)

✅ Step 2: Choose your plan (Pro recommended for unlimited xAI access)

✅ Step 3: Open chat interface

✅ Step 4: Select any xAI model from dropdown

✅ Step 5: Start with Grok 2 Image for image generation

✅ Step 6: Try Grok 4.1 Fast for factual queries

✅ Step 7: Use Grok Code Fast for development tasks

✅ Step 8: Explore all eight models to find your favorites

The Future of AI is Multi-Model

The addition of xAI's complete Grok lineup reinforces what we've always believed: the future isn't about finding "the one best AI." It's about having access to specialized models and choosing the right one for each specific task.

xAI excels at reasoning, reliability, and coding. Claude excels at nuanced analysis. GPT excels at creativity. Gemini excels at speed and research.

With Definable AI, you're never limited to one approach. You have them all.

Start Using xAI Models Today

xAI's breakthrough models are live and ready to transform how you work, create, and code.

Access all eight xAI Grok models now:

✅ Free Plan: Test xAI models at ₹0
✅ Plus Plan: Regular access at ₹199/month
✅ Pro Plan: Unlimited xAI at ₹688/month
✅ Enterprise: Team access at ₹5,999/month

Visit www.definable.ai

Definable AI: Where xAI's Power Meets Unlimited Possibilities

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