K2 Horizon 375B A23B

open weights

Institute of Foundation Models · released 2026-09-03 · 0 offers

Context 524K tokens

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2 of 7 inputs6 radar axes: DesignArena's two boards share one

71.2

dominance-adjusted from 75.0: a better-measured model that is at least as good on each of these inputs ranks above it

AA Coding 61.5Coding Agent v1.4 —AA Intelligence 30.8AA Agentic —Epoch ECI —Software ECI —DesignArena —/—

Radar: percentile among all models measured on each input; a gap means not measured.

11 of 140 registered benchmark versions · bars show the percentile among all models measured on each benchmark.

AA-Briefcase751,303 Elo2026-09-10
AA-Briefcase published 2026-09-10 ↗ · Published board — Tests multi-week professional knowledge-work projects with linked tasks and large source collections.
GDPval-AA v2791,410 Elo2026-09-10
GDPval-AA v2 v2 ↗ · Published board — Tests professional knowledge-work deliverables across occupations using AA's Stirrup harness.
Terminal-Bench v2.1 (AA)7171.9%2026-09-10
Terminal-Bench v2.1 (AA) v2.1 ↗ · Published board — Tests terminal-based work on the 89-task verified refresh using Terminus 2.

SciCode (AA subproblems) v1.0.13742.9%2026-09-10
SciCode (AA subproblems) v1.0.1 ↗ · Published board — Tests scientific Python programming with scientist-annotated background information.
AA Coding Index7261.52026-09-19
AA Coding Index published 2026-09-19 ↗ · Published board — Artificial Analysis publishes this board without a version number; we keep the date each result was retained.

Humanity's Last Exam (AA text-only)8432.0%2026-09-10
Humanity's Last Exam (AA text-only) published 2026-09-10 ↗ · Published board — Tests expert-level knowledge on AA's text-only Humanity's Last Exam subset.
AA-Omniscience Index79-2.972026-09-10
AA-Omniscience Index published 2026-09-10 ↗ · Published board — Tests factual reliability while rewarding correct answers and penalizing hallucinations.

GDP.pdf (AA)387.4%2026-09-10
GDP.pdf (AA) published 2026-09-10 ↗ · Published board — Tests professional reasoning over long PDFs with AA document preparation and grading.
AA-LCR v1.18980.0%2026-09-10
AA-LCR v1.1 v1.1 ↗ · Published board — Tests reasoning across multiple long documents with corrected answer keys and grading.

AA Intelligence Index8830.82026-09-19
AA Intelligence Index published 2026-09-19 ↗ · Published board — Artificial Analysis publishes this board without a version number; we keep the date each result was retained.

CritPt (AA)774.6%2026-09-10
CritPt (AA) published 2026-09-10 ↗ · Published board — Tests research-level physics reasoning with Python, symbolic and numerical answers.
GPQA Diamond (AA)8387.3%2026-09-10
GPQA Diamond (AA) published 2026-09-10 ↗ · Published board — Tests graduate-level biology, physics and chemistry knowledge on the Diamond subset.

τ³-Banking (AA) v1.0.17434.2%2026-09-10
τ³-Banking (AA) v1.0.1 ↗ · Published board — Tests banking support agents that retrieve policies and change account state through tools.

Missing coverage · 132 benchmark versions

No result does not mean a zero, or that the model was never tested. Collection failures and disputed versions retain their distinct status.

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