K2 Horizon 375B A23B

Available

MBZUAI (IFM)Open source

The flagship sparse-MoE checkpoint of MBZUAI/IFM's K2 Horizon family (released Sep 3, 2026). 375B total / 23B active per token with a native 512K (524,288-token) context and Apache-2.0 weights on Hugging Face (IFM/K2-Horizon-375B-A23B). Ships with k2_horizon reasoning and tool-call parsers for agentic tool use, terminal workflows, and long-horizon reasoning.

Official page ↗Model card ↗

Specifications

License: Open source · Apache-2.0
Weights: Downloadable
Architecture: Mixture-of-Experts
Parameters: 375B · 23B active
Context window: 524K tokens
Max output: —
Knowledge cutoff: —
Price (in / out, $/M): —
Modalities: TextCode

Benchmarks

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Vendor-reported figures are claims until independently verified. See methodology.