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K2 Horizon 3.7B

Sep 2026
IK2 Horizon 3.7B
Compare in
on
—per task?
$0.30 / $1.20per 1M in / out?
—output speed?
524Kcontext

Rankingin thinking mode?

Full ranking →
1MiniCPM5 1B0.92G9v3 3B11.73G9v3 39A5B134Command A+14.25Gemini 4 Argon15.1
···
71Ling 3.0 Flash44.172K2 Horizon 3.7B44.173GPT-5 Mini44.3

Strong at

B
Reasoning#149 of 334Knowledge#146 of 318
C
Coding#75 of 132Agents & work tasks#93 of 175Science#188 of 312Long context#150 of 273

Alternatives?

ModelScoreCostPer taskWhat changes
CheaperLing 3.0 Flash VLthinkingOpen×2-83%$0.06 / $0.18Context: 524K → 262K+1BetterGranite 4.2 3BthinkingOpen+68%-90%$0.006Context: 524K → 128KOOpenMiniCPM5 1Bnon-thinking×49——Context: 524K → 131KCheaperGranite 4.2 30BthinkingOpen+73%-46%$0.072Context: 524K → 128K+1CheaperGLM 5.3 FlashmaxOpen+60%-55%$0.28Memory (4-bit): 2.5 GB → 193 GB+5

Run it yourself

estimate
Fits on✓ 8 GB (phone, laptop) · 8-bit✓ 16 GB · full quality✓ 24 GB GPU · full quality✓ 48 GB GPU · full quality✓ 80 GB GPU · full quality
LicenceApache-2.0free for commercial use

Benchmarks

in Chat & Knowledge
AA Intelligence Index 4.3.215.6#140
AA Omniscience Index-28.6#147
AA Omniscience · Accuracy10.8#278
AA Omniscience · Hallucination Rate44.1#72
Humanity's Last Exam13.9#150
GPQA Diamond69.2#190
AA-LCR (long context) 1.162.3#151
CritPt (physics)0#180
GDP.pdf · AA all-pass3.2#99

FAQ

How much does K2 Horizon 3.7B cost?›

$0.30 per 1M input tokens and $1.20 per 1M output tokens (cheapest host: Featherless).

Is K2 Horizon 3.7B free to use?›

There is no free API; the cheapest paid price is $0.30 per 1M input tokens. The weights are open, so you can run it yourself.

How good is K2 Horizon 3.7B, and what is it best at?›

#149 of 334 in Chat & Knowledge, #75 of 132 in Coding, #69 of 133 in Agents & Tool Use, #99 of 133 in Vision & Documents.

Is K2 Horizon 3.7B better than Ling 3.0 Flash?›

On AA Omniscience · Hallucination Rate, K2 Horizon 3.7B scores 44.1 vs 44.1 — about the same.

How can I use K2 Horizon 3.7B?›

Through the API of Featherless.

What is the context window of K2 Horizon 3.7B?›

524K tokens.

When was K2 Horizon 3.7B released? Is there a newer version?›

Released 2026-09-03. It is the current version in its line.

Is K2 Horizon 3.7B open source?›

Yes, the weights are open (Apache-2.0 licence).

Can I run K2 Horizon 3.7B locally?›

The weights are open and can be self-hosted; hardware needs are not confirmed yet.

Can K2 Horizon 3.7B read images?›

No, it accepts text only.

What is K2 Horizon 3.7B?›

K2 Horizon 3.7B is an open-weights language model from Institute of Foundation Models, released Sep 2026.

What are the best alternatives to K2 Horizon 3.7B?›

Ling 3.0 Flash VL (cheaper), Granite 4.2 3B (better), MiniCPM5 1B (open weights).