K2 Horizon 375B A23B
K2 Horizon 375B A23B is available now for rag, agents, and long context with open-source and 524k context; evaluate it while provider pricing coverage matures.
Use it for
- Teams evaluating rag, agents, and long context
- Workloads that can use a 524k context window
Do not use it for
- Cost-sensitive launches that need sourced token pricing
- Vision or document-understanding workloads
- Teams that need a tracked hosted API route today
- Family
- K2 Horizon
- Released
- 2026-09-03
- Context
- 524k
- Parameters
- 375B (23B active)
- Architecture
- Mixture of Experts
- Specialization
- agentic
- Openness
- Open source
- License
- Apache 2.0OSI-approvedCommercial use: permitted
- Weights
- Available
- Code
- Unknown
- Training
- Pretrained
No tracked provider token pricing is available yet.
About
K2-Horizon-375B-A23B is IFM's flagship sparse MoE K2 Horizon checkpoint: 375B total parameters with 23B active per token, native 512K context (524,288 tokens), and Apache 2.0 weights on Hugging Face (IFM/K2-Horizon-375B-A23B). Released September 3, 2026 with k2_horizon reasoning and tool-call parsers for agentic tool use, terminal workflows, and long-horizon reasoning.
Top use-case fit: coding, agents, and build tasks
RAG
Included by capability and metadata signals in the decision map.
Agents
Included by capability and metadata signals in the decision map.
Long context
Included by capability and metadata signals in the decision map.
Provider price ladder
No tracked provider token pricing is available for this model yet.
Capabilities
Benchmark peer barsfor RAG
No task-mapped benchmark peers are available for this model yet.
Migration checks
No linked migration route is available for this model yet.
No tracked provider token pricing is available yet.