K2 Horizon 3.7B vs Phi 4 Reasoning Plus
K2 Horizon 3.7B leads the LLM Stats Score 21.4 to 14.4.
Institute of Foundation Models · Microsoft · Updated for 2026
Which is better?
K2 Horizon 3.7B leads the overall LLM Stats Score 21.4 to 14.4, ranking #215 overall.
In the 1 individual benchmarks reported for both models, Phi 4 Reasoning Plus wins 1; this is a narrower head-to-head signal than the composite indexes.
Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.
Choose K2 Horizon 3.7B
- overall performance matters — it scores 21.4 and ranks #215 on LLM Stats
- you want the most recent training data — it shipped Sep 2026
Choose Phi 4 Reasoning Plus
- you value its reported benchmark strengths — it wins 1 of 1 exact shared results
At a glance
The differences that matter most.
Capability indexes
Additional strengths measured across groups of related public benchmarks
Individual benchmarks
8 reported for K2 Horizon 3.7B · 11 for Phi 4 Reasoning Plus
K2 Horizon 3.7B outperforms in 0 benchmarks, while Phi 4 Reasoning Plus is better at 0 benchmarks.
Both models are evenly matched across the benchmarks.
Human preference
Blind head-to-head votes and playground preference scores
Model Size
Parameter count comparison
Phi 4 Reasoning Plus has 10.3B more parameters than K2 Horizon 3.7B, making it 278.4% larger.
License
Usage and distribution terms
K2 Horizon 3.7B is licensed under Apache 2.0, while Phi 4 Reasoning Plus uses MIT.
License differences may affect how you can use these models in commercial or open-source projects.
Apache 2.0
Open weights
MIT
Open weights
Release Timeline
When each model was launched
K2 Horizon 3.7B was released on 2026-09-03, while Phi 4 Reasoning Plus was released on 2025-04-30.
K2 Horizon 3.7B is 16 months newer than Phi 4 Reasoning Plus.
Sep 3, 2026
1 months ago
1.3yr newerApr 30, 2025
1.5 years ago
Knowledge Cutoff
When training data ends
Phi 4 Reasoning Plus has a documented knowledge cutoff of 2025-03-01, while K2 Horizon 3.7B's cutoff date is not specified.
We can confirm Phi 4 Reasoning Plus's training data extends to 2025-03-01, but cannot make a direct comparison without K2 Horizon 3.7B's cutoff date.
—
Mar 2025
Outputs Comparison
Judge for yourself.
Run your own prompts against K2 Horizon 3.7B and Phi 4 Reasoning Plus side-by-side, then vote on the output you prefer.
FAQ
Common questions about K2 Horizon 3.7B vs Phi 4 Reasoning Plus.