The brief

Analyst view

• Founded by Misha Laskin and Ioannis Antonoglou in March 2024, former DeepMind researchers on Gemini and AlphaGo.
• Series B $2B in October 2025 at $8B valuation, led by NVIDIA and Lightspeed.
• Beam, 501B parameters with 23B active per token, announced October 5, 2026 with weights to release under Apache 2.0 in October 2026.

Technical approach

As reported

Sparse mixture-of-experts

Efficient routing of computation

Beam uses 501B total parameters but activates only 23B per token, making it cheaper to run while competing with larger models.

Coding and reasoning

Tasks for AI agents

Beam targets software development automation and complex reasoning, the core of agentic AI systems.

Open weights

Transparency and distribution

Weights, technical report and developer tooling released under Apache 2.0, enabling deployment without licensing restrictions.