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Gemma 4 31B vs K2 Horizon 32B

Gemma 4 31B and K2 Horizon 32B are closely matched at 32.5 and 30.2 on the LLM Stats Score.

Google · Institute of Foundation Models · Updated for 2026

Which is better?

Gemma 4 31B and K2 Horizon 32B are closely matched on the overall LLM Stats Score at 32.5 and 30.2.

In the 2 individual benchmarks reported for both models, Gemma 4 31B 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 Gemma 4 31B

  • you value its reported benchmark strengths — it wins 2 of 2 exact shared results

Choose K2 Horizon 32B

  • you want the most recent training data — it shipped Sep 2026

At a glance

The differences that matter most.

Core performance indexes
32.5
#129
30.2
#147
33.0
#121
30.0
#147
13.3
#122
14.2
#120
Cost, coverage & limits
Benchmark wins
2 of 2
0 of 2
Input price
$0.09 / M
— / M
Output price
$0.34 / M
— / M
Context window
262,144
—

Capability indexes

Additional strengths measured across groups of related public benchmarks

1 shared
Index
Gemma 4 31B
K2 Horizon 32B
29.2#94
22.2#152
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

12 reported for Gemma 4 31B · 9 for K2 Horizon 32B

2 shared

Gemma 4 31B outperforms in 2 benchmarks (GPQA, Humanity's Last Exam), while K2 Horizon 32B is better at 0 benchmarks.

Gemma 4 31B significantly outperforms across most benchmarks.

Fri Oct 30 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground preference scores

Model Size

Parameter count comparison

1.3B diff

K2 Horizon 32B has 1.3B more parameters than Gemma 4 31B, making it 4.2% larger.

Google
Gemma 4 31B
30.7Bparameters
Institute of Foundation Models
K2 Horizon 32B
32.0Bparameters
30.7B
Gemma 4 31B
32.0B
K2 Horizon 32B

Context Window

Maximum input and output token capacity

Only Gemma 4 31B specifies input context (262,144 tokens). Only Gemma 4 31B specifies output context (262,144 tokens).

Google
Gemma 4 31B
Input262,144 tokens
Output262,144 tokens
Institute of Foundation Models
K2 Horizon 32B
Input- tokens
Output- tokens
Fri Oct 30 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Gemma 4 31B supports multimodal inputs, whereas K2 Horizon 32B does not.

Gemma 4 31B can handle both text and other forms of data like images, making it suitable for multimodal applications.

Gemma 4 31B

Text
Images
Audio
Video

K2 Horizon 32B

Text
Images
Audio
Video

License

Usage and distribution terms

Both models are licensed under Apache 2.0.

Both models share the same licensing terms, providing consistent usage rights.

Gemma 4 31B

Apache 2.0

Open weights

K2 Horizon 32B

Apache 2.0

Open weights

Release Timeline

When each model was launched

Gemma 4 31B was released on 2026-04-02, while K2 Horizon 32B was released on 2026-09-03.

K2 Horizon 32B is 5 months newer than Gemma 4 31B.

Gemma 4 31B

Apr 2, 2026

6 months ago

K2 Horizon 32B

Sep 3, 2026

1 months ago

5mo newer

Knowledge Cutoff

When training data ends

Gemma 4 31B has a documented knowledge cutoff of 2025-01-01, while K2 Horizon 32B's cutoff date is not specified.

We can confirm Gemma 4 31B's training data extends to 2025-01-01, but cannot make a direct comparison without K2 Horizon 32B's cutoff date.

Gemma 4 31B

Jan 2025

K2 Horizon 32B

—

Outputs Comparison

Notice missing or incorrect data?

Judge for yourself.

Run your own prompts against Gemma 4 31B and K2 Horizon 32B side-by-side, then vote on the output you prefer.

Gemma 4 31B
✓ Preferred
K2 Horizon 32B
Open in Playground

FAQ

Common questions about Gemma 4 31B vs K2 Horizon 32B.

Which is better, Gemma 4 31B or K2 Horizon 32B?

Gemma 4 31B and K2 Horizon 32B are closely matched on the LLM Stats Score at 32.5 and 30.2. Gemma 4 31B is made by Google and K2 Horizon 32B is made by Institute of Foundation Models. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Gemma 4 31B compare to K2 Horizon 32B in benchmarks?

Gemma 4 31B scores AIME 2026: 89.2%, MMMLU: 88.4%, t2-bench: 86.4%, MathVision: 85.6%, MMLU-Pro: 85.2%. K2 Horizon 32B scores GPQA: 82.8%, OmniScience (non-hallucination rate): 69.7%, AA-LCR: 68.0%, Terminal-Bench 2.1: 62.6%, SciCode: 37.9%.

What are the context window sizes for Gemma 4 31B and K2 Horizon 32B?

Gemma 4 31B supports 262K tokens and K2 Horizon 32B supports an unknown number of tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Gemma 4 31B and K2 Horizon 32B?

Key differences include LLM Stats Score (32.5 vs 30.2), multimodal support (yes vs no). See the full comparison above for benchmark-by-benchmark results.

Who makes Gemma 4 31B and K2 Horizon 32B?

Gemma 4 31B is developed by Google and K2 Horizon 32B is developed by Institute of Foundation Models.