Apertus 8B Instruct vs Tri-21B-Think
Wins 0 of 5 areas
—
Wins 4 of 5 areas
Reasoning · Facts · Long documents · Following instructions
Tri-21B-Think is the stronger all-rounder.
Scores updated · 11 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.
- FactsGetting facts right instead of making them up02Tri-21B-Think2 of 2 tests
- ReasoningHard problems that need careful thinking01Tri-21B-Think1 of 3 tests · 2 ties
- Long documentsFinding answers in very long texts01Tri-21B-Think1 of 1 test
- Following instructionsDoing exactly what it is asked01Tri-21B-Think1 of 1 test
- CodingWriting and fixing software00Even0 each · 1 tie
Coding, long documents and following instructions rest on a single test each.
What it costs
Prices per million tokens, roughly 750,000 words. The bars show the cost of a million tokens read plus a million written.
The biggest differences
The tests each model wins by the widest margin, up to three each. Scores are out of 100.
Where Tri-21B-Think pulls ahead
- Graduate-level biology, physics and chemistry questionsGPQA Diamond+34.5points ahead
- Follows unfamiliar, precisely checkable instructionsIFBench+32.2points ahead
- Avoids making up answers it doesn't knowAA-Omniscience · Non-hallucination+10.7points ahead
Where Apertus 8B Instruct pulls ahead
No clear win on a test scored out of 100.
Every test, side by side
All 11 tests both models report. The winning score is in its model's colour; marks a score checked independently.
ReasoningTri-21B-Think
- GPQA DiamondTri-21B-Think by 34.525.660.1+34.5
- Humanity's Last Examtie55.9tie
- CritPttie00.3tie
FactsTri-21B-Think
- AA-Omniscience · Non-hallucinationTri-21B-Think by 10.73.914.6+10.7
- AA-Omniscience · AccuracyTri-21B-Think by 2.69.712.3+2.6
Following instructionsTri-21B-Think
- IFBenchTri-21B-Think by 32.222.454.6+32.2
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)Tri-21B-Think by 69.611.481+69.6
- AA-OmniscienceTri-21B-Think by 14.7-77.2-62.5+14.7
- AA IntelligenceTri-21B-Think by 4.24.89+4.2
Questions people ask
Which is better, Apertus 8B Instruct or Tri-21B-Think?
Tri-21B-Think wins four of the five areas where both have results: reasoning, facts, long documents and following instructions. Apertus 8B Instruct wins none. They are level on coding.
Which is better for coding?
Neither. All 1 coding tests both models report are ties.
How do you compare the two?
We use the 11 benchmark tests both models have published scores on. The verdict counts the 8 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.