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IFM
K2 Horizon 375B
NewLive · US + CAtextApache 2.0
Flagship of the Institute of Foundation Models' fully open K2 Horizon family, released with weights, code and training data.
Price per 1M tokens
Input
$0.50
Cached input
—
Output
$0.50
Priced per model · Same in US and CA · Free tier included · Pricing
AA Index
31
#9 of 14
open models we serve
Specs
- Model id
k2-horizon-375b-a23b- Weights released
- Sep 3, 2026
- Parameters
- 375B total · 23B active
- Architecture
- MoE
- Context
- 512K tokens (524,288)
- Input
- text
- License
- Apache 2.0
- Regions
- us, ca
- Weights
- IFM/K2-Horizon-375B-A23B ↗
Benchmarks
- Artificial Analysis Intelligence Index31
Sources: huggingface.co · marktechpost.com · hpcwire.com
Use it
Three lines of code, or zero.
OpenAI-compatible. Use the model id below, or auto to let the router decide when this model is worth it.
import os
from openai import OpenAI
client = OpenAI(base_url=os.environ["ST_BASE_URL"], api_key=os.environ["ST_API_KEY"])
resp = client.chat.completions.create(
model="k2-horizon-375b-a23b",
messages=[{"role": "user", "content": "Hello"}],
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