K2 Horizon 375B A23B
Released
2026-09-03
Last refreshed
2026-09-07
Status
Researched 45d ago
Open sourceCommercial use: permittedCodingRAGAgentsLong contextClassificationJSON / Tool use
K2 Horizon 375B A23B is available now for coding, rag, and agents with open-source and 512K context; evaluate it while provider pricing coverage matures.
MBZUAI releases · 7 in the last 12 months · this family litChangelog →
Specifications
- Family
- K2 Horizon
- Released
- 2026-09-03
- Context
- 512K
- Parameters
- 375B (23B active)
- Architecture
- Mixture of Experts
- Specialization
- agentic
- Openness
- Open source
- License
- Apache 2.0OSI-approvedPermitted
- Weights
- Available
- Code
- Unknown
- Training
- Pretrained
Created by
Pricing
No tracked provider pricing is available yet.
Links
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.
Providers
No active provider routes are tracked for this model yet.
Capabilities
ReasoningJSON / Tool useStructured Outputs
Benchmark peer barsfor Coding
SWE-bench ProRank 45 of 54
Benchmark scores(7)
Scores are benchmark-specific and are direction-aware: the same numeric gap can mean very different outcomes across suites. Use the leaderboard context and this model's provider route to decide whether the winning margin is meaningful for your workload.
| Benchmark | Score | Version | Evaluation | Source |
|---|---|---|---|---|
| 65.3 | Toolathlon-VerifiedObserved 2026-10-12 | — | ||
| 25.3 | AutomationBench PublicObserved 2026-10-12 | — | ||
| 72.8 | BrowseComp (accuracy%), Discard-all@95kObserved 2026-10-12 | — | ||
| 70.2 | Terminal-Bench 2.1Observed 2026-10-12 | — | ||
| 42.6 | SWE-bench Pro (strict, no internet)Observed 2026-10-12 | — | ||
| 32.0 | Humanity's Last Exam (without tools)Observed 2026-10-12 | — | ||
| 87.3 | diamondObserved 2026-10-12 | — |
Migration checks
No linked migration route is available for this model yet.
Created by
Pricing
No tracked provider pricing is available yet.
Links