ConfiaTech

Article

Introducing Mellum2: A 12B Mixture-of-Experts Model by JetBrains

June 1, 2026

Introducing Mellum2: Revolutionizing AI Efficiency with a 12B Mixture-of-Experts Model

In the world of artificial intelligence, bigger isn't always better. While massive AI models can process complex tasks, they often come with a hefty price tag and sluggish performance. What if you could achieve the same results without breaking the bank or upgrading your hardware? Enter Mellum2, a groundbreaking 12B AI model developed by JetBrains that's changing the game with its innovative approach to efficiency and speed.

The Problem with Traditional AI Models

Most AI models today are like giant engines running at full throttle, even for simple tasks. This approach is not only expensive but also slow and unnecessary. The primary concern is no longer just about raw size, but rather about efficiency, latency, and real-world usability. As AI becomes increasingly integrated into our daily lives, the need for faster, more cost-effective solutions has never been more pressing.

Introducing Mellum2: A 12B Mixture-of-Experts Model

Mellum2 is a game-changer in the world of AI. This 12B model activates only 2.5B parameters per task, delivering the same power at over 2x the speed. By doing so, it addresses the pressing issues of efficiency, latency, and usability that plague traditional AI models. Mellum2 is specifically designed for workflows that drive real results, including:

  • Routing decisions: Mellum2's efficiency makes it an ideal choice for routing decisions, where speed and accuracy are crucial.
  • RAG pipelines: By activating only the necessary parameters, Mellum2 streamlines RAG pipelines, reducing latency and increasing productivity.
  • Coding assistants: Mellum2's speed and efficiency make it perfect for coding assistants, enabling developers to work faster and more accurately.
  • Sub-agent tasks: Mellum2's ability to activate only the necessary parameters makes it an excellent choice for sub-agent tasks, where efficiency is paramount.

Key Features of Mellum2

Mellum2 is designed with the needs of AI developers and teams in mind. Some of its key features include:

  • Open-source: Mellum2 is open-source, licensed under Apache 2.0, making it accessible to developers worldwide.
  • Optimized for private deployment: Mellum2 is optimized for private deployment, ensuring that teams can integrate it seamlessly into their workflows.
  • High throughput: Mellum2's innovative approach enables high throughput without the bloat, making it perfect for teams who need to process large amounts of data.

What Does This Mean for AI Development?

Mellum2 has the potential to revolutionize the way we approach AI development. By providing a faster, more cost-effective solution, Mellum2 can help teams:

  • Reduce costs: By activating only the necessary parameters, Mellum2 reduces the computational resources required, leading to significant cost savings.
  • Increase productivity: Mellum2's speed and efficiency enable developers to work faster and more accurately, leading to increased productivity.
  • Improve usability: Mellum2's focus on real-world usability makes it an ideal choice for teams who need to integrate AI into their workflows.

Getting Started with Mellum2

Mellum2 is available now on Hugging Face, making it easy for developers to integrate it into their workflows. To get started, simply:

  • Try Mellum2: Visit the Hugging Face website to try Mellum2 and experience its power for yourself.
  • Read the technical report: Dive deeper into the technical details of Mellum2 with the comprehensive technical report.

Conclusion

Mellum2 is a game-changer in the world of AI. Its innovative approach to efficiency and speed makes it an ideal choice for teams who need to process large amounts of data without breaking the bank. By providing a faster, more cost-effective solution, Mellum2 has the potential to revolutionize the way we approach AI development. Try Mellum2 today and experience the power of efficient AI for yourself.

FAQs

  1. What is Mellum2?
    Mellum2 is a 12B AI model developed by JetBrains that activates only 2.5B parameters per task, delivering the same power at over 2x the speed.
  2. What are the key features of Mellum2?
    Mellum2 is open-source, optimized for private deployment, and perfect for teams who need high throughput without the bloat.
  3. How can I get started with Mellum2?
    Mellum2 is available now on Hugging Face. Simply visit the website to try Mellum2 and experience its power for yourself.

Build with ConfiaTech

Want to ship something like this?

We turn AI research into production systems. Free 30-minute discovery call scheduled within 24 hours.

Book a discovery call