A.X-K2 vs K2 Horizon 3.7B
Wins 4 of 5 areas
Coding · Reasoning · Facts · Long documents
Wins 0 of 5 areas
—
A.X-K2 is the stronger all-rounder.
Scores updated · 13 tests both models report · How we compare
Where each one wins
Tests won in each of the five areas where both have results. Each piece is one test, so a longer bar means more evidence; grey means the two scored within a point of each other.
- ReasoningHard problems that need careful thinking30A.X-K23 of 3 tests
- CodingWriting and fixing software20A.X-K22 of 2 tests
- FactsGetting facts right instead of making them up20A.X-K22 of 2 tests
- Long documentsFinding answers in very long texts10A.X-K21 of 1 test
- AgentsCarrying out multi-step tasks on its own11Even1 each · 1 tie
Long documents rests on a single test.
The biggest differences
The tests each model wins by the widest margin, up to three each. Scores are out of 100.
Where A.X-K2 pulls ahead
- Code for real scientific research problemsSciCode+19points ahead
- Graduate-level biology, physics and chemistry questionsGPQA Diamond+16.5points ahead
- Very hard expert questions across many subjectsHumanity's Last Exam+15.7points ahead
Where K2 Horizon 3.7B pulls ahead
- Customer-service tasks in a simulated bankτ-Bench V3 · Banking+3.5points ahead
Every test, side by side
All 13 tests both models report. The winning score is in its model's colour; marks a score checked independently.
CodingA.X-K2
- SciCodeA.X-K2 by 194122+19
- Terminal-Bench 2.1A.X-K2 by 10.93928.1+10.9
AgentsEven
- GDPValA.X-K2 by 423.219.2+4
- τ-Bench V3 · BankingK2 Horizon 3.7B by 3.516.119.6+3.5
- Terminal-Bench 4.0tie00tie
ReasoningA.X-K2
- GPQA DiamondA.X-K2 by 16.585.769.2+16.5
- Humanity's Last ExamA.X-K2 by 15.729.613.9+15.7
- CritPtA.X-K2 by 8.98.90+8.9
FactsA.X-K2
- AA-Omniscience · Non-hallucinationA.X-K2 by 11.16755.9+11.1
- AA-Omniscience · AccuracyA.X-K2 by 7.818.610.8+7.8
Other results2 tests, not counted
Tests outside the eight areas. They are not counted above: several are summary scores built from other tests, or the same test under another name.
- AA-OmniscienceA.X-K2 by 20.4-8.2-28.6+20.4
- AA IntelligenceA.X-K2 by 5.921.515.6+5.9
Questions people ask
Which is better, A.X-K2 or K2 Horizon 3.7B?
A.X-K2 wins four of the five areas where both have results: coding, reasoning, facts and long documents. K2 Horizon 3.7B wins none. They are level on agents.
Which is better for coding?
A.X-K2. It wins 2 of the 2 coding tests both models report; K2 Horizon 3.7B wins none.
How do you compare the two?
We use the 13 benchmark tests both models have published scores on. The verdict counts the 11 tests in the eight capability areas, and a gap under one point (ten on rating-style scales) counts as a tie. The other 2 are listed but not counted, because several are summary scores or repeat a test. Each score is the one shown on the model's own page.