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Institute of Foundation Models

K2 Horizon 0.9B

  • Released
  • Open weights
  • Apache 2.0
Intelligence Index

Reasoning setting

3.0#83 of 83measured models
Measured · Artificial Analysis v4.3.2
Context window
131.07K tok

Performance profile

ReasoningRank #106 of 107
29.3%
GPQA Diamond
CodingRank #94 of 94
6.9%
SciCode

Capabilities

Context window

Modalities

Measured setting

Reasoning trade-offs

Source (opens in a new tab)
Intelligence Index v4.3.2
Reasoning
Intelligence Index
3.0

Pricing & access

No API offering listed in our tracked sources.

Run locally

Benchmarks

Full leaderboardSource (opens in a new tab)

Humanity’s Last Exam

Frontier reasoning

K2 Horizon 0.9B · Reasoning#106 of 126

  1. 1Claude Opus 5.5Max61.4%
  2. 2Claude Fable 5.1Max59.1%
  3. 3Gemini 4 ArgonHigh57.1%
  4. 104Llama 3.2 Instruct 11B (Vision)Standard5.5%
  5. 105NVIDIA Nemotron Nano 12B v2 VLReasoning5.5%
  6. 106Ministral 3 3BStandard5.4%
  7. 106K2 Horizon 0.9BReasoning5.4%
  8. 108Tiny Aya GlobalStandard5.2%
  9. 109Granite 4.0 MicroStandard5.0%
  10. 110Phi-4 Multimodal InstructStandard5.0%

Peers use their best measured result on this benchmark.

Alternatives

Each model at its highest-scoring measured setting · Intelligence Index v4.3.2 and its evaluation cost per task.