Apriel-v1.6-15B-Thinker vs K2-V2 (high)
Wins 4 of 5 areas
Coding · Reasoning · Long documents · Following instructions
Wins 1 of 5 areas
Facts
Apriel-v1.6-15B-Thinker is the stronger all-rounder.K2-V2 (high) is better at facts.
Scores updated · 12 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.
- CodingWriting and fixing software20Apriel-v1.6-15B-Thinker2 of 2 tests
- ReasoningHard problems that need careful thinking10Apriel-v1.6-15B-Thinker1 of 3 tests · 2 ties
- Long documentsFinding answers in very long texts10Apriel-v1.6-15B-Thinker1 of 1 test
- Following instructionsDoing exactly what it is asked10Apriel-v1.6-15B-Thinker1 of 1 test
- FactsGetting facts right instead of making them up01K2-V2 (high)1 of 2 tests · 1 tie
Long documents and following instructions rest on a single test each.
The biggest differences
The tests each model wins by the widest margin, up to three each. Scores are out of 100.
Where Apriel-v1.6-15B-Thinker pulls ahead
Where K2-V2 (high) pulls ahead
- Answers hard knowledge questions correctlyAA-Omniscience · Accuracy+1.5points ahead
Every test, side by side
All 12 tests both models report. The winning score is in its model's colour; marks a score checked independently.
CodingApriel-v1.6-15B-Thinker
- SciCodeApriel-v1.6-15B-Thinker by 8.737.328.6+8.7
- Terminal-Bench HardApriel-v1.6-15B-Thinker by 4.614.49.8+4.6
ReasoningApriel-v1.6-15B-Thinker
- GPQA DiamondApriel-v1.6-15B-Thinker by 5.273.368.1+5.2
- CritPttie0.30tie
- Humanity's Last Examtie10.810.5tie
FactsK2-V2 (high)
- AA-Omniscience · AccuracyK2-V2 (high) by 1.51718.5+1.5
- AA-Omniscience · Non-hallucinationtie8.19tie
Long documentsApriel-v1.6-15B-Thinker
- AA-LCRApriel-v1.6-15B-Thinker by 15.350.335+15.3
Following instructionsApriel-v1.6-15B-Thinker
- IFBenchApriel-v1.6-15B-Thinker by 969.160.1+9
Other results3 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.
- τ²-Bench Telecom (AA run)Apriel-v1.6-15B-Thinker by 41.569.327.8+41.5
- AA-OmniscienceK2-V2 (high) by 3.8-59.4-55.6+3.8
- AA IntelligenceApriel-v1.6-15B-Thinker by 3.513.49.9+3.5
Questions people ask
Which is better, Apriel-v1.6-15B-Thinker or K2-V2 (high)?
Apriel-v1.6-15B-Thinker wins four of the five areas where both have results: coding, reasoning, long documents and following instructions. K2-V2 (high) wins facts.
Which is better for coding?
Apriel-v1.6-15B-Thinker. It wins 2 of the 2 coding tests both models report; K2-V2 (high) wins none.
How do you compare the two?
We use the 12 benchmark tests both models have published scores on. The verdict counts the 9 tests in the eight capability areas, and a gap under one point (ten on rating-style scales) counts as a tie. The other 3 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.