K2 Horizon 7B vs Kimi K3.1 Pro
Kimi K3.1 Pro leads the LLM Stats Score 55.5 to 25.7.
Institute of Foundation Models · Moonshot AI · Updated for 2026
Which is better?
Kimi K3.1 Pro leads the overall LLM Stats Score 55.5 to 25.7, ranking #5 overall.
In the 2 individual benchmarks reported for both models, Kimi K3.1 Pro wins 2; 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 7B
- you need open weights you can self-host or fine-tune
Choose Kimi K3.1 Pro
- overall performance matters — it scores 55.5 and ranks #5 on LLM Stats
- your work emphasizes reasoning and coding — it leads those capability indexes
- you value its reported benchmark strengths — it wins 2 of 2 exact shared results
- you want the most recent training data — it shipped Oct 2026
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 7B · 30 for Kimi K3.1 Pro
K2 Horizon 7B outperforms in 0 benchmarks, while Kimi K3.1 Pro is better at 2 benchmarks (BrowseComp, Humanity's Last Exam).
Kimi K3.1 Pro significantly outperforms across most benchmarks.
Human preference
Blind head-to-head votes and playground preference scores
Context Window
Maximum input and output token capacity
Only Kimi K3.1 Pro specifies input context (1,048,576 tokens). Only Kimi K3.1 Pro specifies output context (1,048,576 tokens).
Input capabilities
Documented input modalities across available providers
Kimi K3.1 Pro supports multimodal inputs, whereas K2 Horizon 7B does not.
Kimi K3.1 Pro can handle both text and other forms of data like images, making it suitable for multimodal applications.
K2 Horizon 7B
Kimi K3.1 Pro
Release Timeline
When each model was launched
K2 Horizon 7B was released on 2026-09-03, while Kimi K3.1 Pro was released on 2026-10-23.
Kimi K3.1 Pro is 2 months newer than K2 Horizon 7B.
Sep 3, 2026
1 months ago
Oct 23, 2026
1 weeks ago
1mo newerKnowledge Cutoff
When training data ends
Neither model specifies a knowledge cutoff date.
Unable to compare the recency of their training data.
Outputs Comparison
Judge for yourself.
Run your own prompts against K2 Horizon 7B and Kimi K3.1 Pro side-by-side, then vote on the output you prefer.
FAQ
Common questions about K2 Horizon 7B vs Kimi K3.1 Pro.