Apertus 70B Instruct vs Reka Flash 3
Wins 0 of 5 areas
—
Wins 2 of 5 areas
Coding · Following instructions
Reka Flash 3 wins more areas, narrowly.
Scores updated · 14 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 software01Reka Flash 31 of 2 tests · 1 tie
- Following instructionsDoing exactly what it is asked01Reka Flash 31 of 1 test
- ReasoningHard problems that need careful thinking11Even1 each · 1 tie
- FactsGetting facts right instead of making them up11Even1 each
- Long documentsFinding answers in very long texts00Even0 each · 1 tie
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.
Reka Flash 3 costs 73% less for the same work.
The biggest differences
The tests each model wins by the widest margin, up to three each. Scores are out of 100.
Where Reka Flash 3 pulls ahead
- Graduate-level biology, physics and chemistry questionsGPQA Diamond+25.7points ahead
- Code for real scientific research problemsSciCode+21points ahead
- Follows unfamiliar, precisely checkable instructionsIFBench+4.5points ahead
Where Apertus 70B Instruct pulls ahead
- Avoids making up answers it doesn't knowAA-Omniscience · Non-hallucination+8.5points ahead
- Very hard expert questions across many subjectsHumanity's Last Exam+1.1points ahead
Every test, side by side
All 14 tests both models report. The winning score is in its model's colour; marks a score checked independently.
ReasoningEven
- GPQA DiamondReka Flash 3 by 25.727.252.9+25.7
- Humanity's Last ExamApertus 70B Instruct by 1.15.54.4+1.1
- CritPttie00tie
FactsEven
- AA-Omniscience · Non-hallucinationApertus 70B Instruct by 8.517.28.7+8.5
- AA-Omniscience · AccuracyReka Flash 3 by 2.111.613.7+2.1
Following instructionsReka Flash 3
- IFBenchReka Flash 3 by 4.525.930.4+4.5
Other results5 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)Apertus 70B Instruct by 12.912.90+12.9
- Artificial Analysis Coding IndexReka Flash 3 by 71.98.9+7
- AA Agentic IndexApertus 70B Instruct by 4.34.30+4.3
- AA-OmniscienceApertus 70B Instruct by 3.6-61.5-65.1+3.6
- AA Intelligencetie5.15.6tie
Questions people ask
Which is better, Apertus 70B Instruct or Reka Flash 3?
Reka Flash 3 wins two of the five areas where both have results: coding and following instructions. Apertus 70B Instruct wins none. They are level on reasoning, facts and long documents.
Which is better for coding?
Reka Flash 3. It wins 1 of the 2 coding tests both models report; Apertus 70B Instruct wins none, and 1 is a tie.
Which is cheaper?
Apertus 70B Instruct costs $0.82 per million input tokens and $2.92 per million output tokens; Reka Flash 3 costs $0.20 and $0.80. That makes Reka Flash 3 about 73% cheaper for the same work.
How do you compare the two?
We use the 14 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 5 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.