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Head-to-head comparison

Gemma 4 31B vs K2 Horizon 375B A23B

Gemma 4 31B (Google) and K2 Horizon 375B A23B (IFM) compared on the ModelCap Index, API price, context window, provider availability, weight access and every public benchmark board they share. Figures are the same ones shown on the live rankings; nothing here is a hidden score.

Snapshot as of 13 September 2026

As of 13 September 2026, Gemma 4 31B holds the stronger ModelCap Index position (#27 vs #30).

Which should you choose?

Choose Gemma 4 31B if…

  • you want the stronger overall ModelCap Index position — #27 against #30 (68.9 vs 67.3 points).
  • you want provider choice — 12 listed API providers against 0.

Choose K2 Horizon 375B A23B if…

  • you want the more recently listed model — K2 Horizon 375B A23B was listed 1 September 2026, Gemma 4 31B 2 April 2026.

Gemma 4 31B vs K2 Horizon 375B A23B: specs, pricing and context

Specification comparison of Gemma 4 31B and K2 Horizon 375B A23B
FieldGemma 4 31BGoogleK2 Horizon 375B A23BIFM
ModelCap Index position#27#30
Index score68.967.3
EvidenceMeasuredEstimated
Input price / 1M tokens$0.09Unlisted
Output price / 1M tokens$0.34Unlisted
Context window262K tokens— tokens
Max output tokens16K—
API providers listed120
Weight accessOpen weightsOpen weights
Input modalitiesImage, Text, VideoText
First listed2 April 20261 September 2026
PublisherGoogleIFM

Evidence: 3 public benchmark observations across 3 boards · global-corpus-prior over 186 held-out anchors (21%); launch card against 6 resolved peers on 11 rows (79%); optimism haircut 0 from cross-lab-probe; shrunk 4.1 toward the measured corpus. Prices are the lowest listed API offer per million tokens observed on the OpenRouter catalogue.

Benchmark scores: Gemma 4 31B vs K2 Horizon 375B A23B

Public benchmark boards where Gemma 4 31B or K2 Horizon 375B A23B has a published result
BoardGemma 4 31BK2 Horizon 375B A23BLeads
Arena codingArena (LMArena)14991483–1514—Only one result
AA Terminal-Bench 2.1Artificial Analysis29.2%terminal-bench:2.1:terminus-2:e2b:pass-at-1:3-repeats:source-model="Gemma 4 31B (Non-reasoning)":reasoning=false—Only one result
AA τ²-Bench TelecomArtificial Analysis65.5%tau2:telecom:dual-control:pass-at-1:3-repeats:source-model="Gemma 4 31B (Non-reasoning)":reasoning=false—Only one result
AA Humanity's Last ExamArtificial Analysis11.8%hle:may-2025:text-only-2158:no-tools:pass-at-1:source-model="Gemma 4 31B (Non-reasoning)":reasoning=false—Only one result
WildClawBench OpenClawWildClawBench37.6—Only one result

Scores are the sources' own published figures for each model's best evaluated configuration; ModelCap never re-runs a benchmark.

Want a different pairing? Open the interactive comparison tool to swap either model for any current ranked language model.

Gemma 4 31B vs K2 Horizon 375B A23B: common questions

Is Gemma 4 31B better than K2 Horizon 375B A23B?

Gemma 4 31B ranks higher on the ModelCap Index as of 13 September 2026: #27 against #30. That is a capability ranking built from public benchmark evidence with published uncertainty; whether it is "better" for you also depends on price, context and where you can run it. Their published uncertainty intervals overlap, so the rank difference alone does not establish a reliable capability advantage for your workload.

Is Gemma 4 31B cheaper than K2 Horizon 375B A23B?

At least one of the two has no listed API price on ModelCap right now, so no price comparison is made.

Which has the bigger context window, Gemma 4 31B or K2 Horizon 375B A23B?

Both publish a 262K-token context window.

Which is better for coding, Gemma 4 31B or K2 Horizon 375B A23B?

The two models do not share a coding benchmark board on ModelCap yet, so no head-to-head coding score is published; the ModelCap Index position is the closest overall signal.

Are Gemma 4 31B and K2 Horizon 375B A23B open-weight models?

Gemma 4 31B: Open weights. K2 Horizon 375B A23B: Open weights. Open weights mean the checkpoint can be downloaded and self-hosted under its licence; API-only models are available solely through hosted endpoints.

Where can I run Gemma 4 31B and K2 Horizon 375B A23B?

ModelCap currently lists 12 API providers for Gemma 4 31B and 0 for K2 Horizon 375B A23B, from the OpenRouter catalogue snapshot the site serves; each model page lists the providers and their prices.

How current is this Gemma 4 31B vs K2 Horizon 375B A23B comparison?

Every figure comes from the sealed ModelCap dataset published 13 September 2026; the page re-renders within a minute of each data refresh, and the ModelCap Index positions are the same ones shown on the live rankings.

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