Apertus 8B Instruct vs Claude 3.5 Haiku
Wins 0 of 5 areas
—
Wins 4 of 5 areas
Coding · Facts · Long documents · Following instructions
Claude 3.5 Haiku 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.
- CodingWriting and fixing software02Claude 3.5 Haiku2 of 2 tests
- FactsGetting facts right instead of making them up02Claude 3.5 Haiku2 of 2 tests
- Long documentsFinding answers in very long texts01Claude 3.5 Haiku1 of 1 test
- Following instructionsDoing exactly what it is asked01Claude 3.5 Haiku1 of 1 test
- ReasoningHard problems that need careful thinking11Even1 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.
The biggest differences
The tests each model wins by the widest margin, up to three each. Scores are out of 100.
Where Claude 3.5 Haiku pulls ahead
- Avoids making up answers it doesn't knowAA-Omniscience · Non-hallucination+55points ahead
- Code for real scientific research problemsSciCode+23.3points ahead
- Follows unfamiliar, precisely checkable instructionsIFBench+20.4points ahead
Where Apertus 8B Instruct pulls ahead
- Very hard expert questions across many subjectsHumanity's Last Exam+1.4points 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.
CodingClaude 3.5 Haiku
- SciCodeClaude 3.5 Haiku by 23.34.127.4+23.3
- Terminal-Bench HardClaude 3.5 Haiku by 2.302.3+2.3
ReasoningEven
- GPQA DiamondClaude 3.5 Haiku by 15.225.640.8+15.2
- Humanity's Last ExamApertus 8B Instruct by 1.453.6+1.4
- CritPttie00tie
FactsClaude 3.5 Haiku
- AA-Omniscience · Non-hallucinationClaude 3.5 Haiku by 553.958.9+55
- AA-Omniscience · AccuracyClaude 3.5 Haiku by 3.59.713.2+3.5
Following instructionsClaude 3.5 Haiku
- IFBenchClaude 3.5 Haiku by 20.422.442.8+20.4
Other results4 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-OmniscienceClaude 3.5 Haiku by 54.7-77.2-22.5+54.7
- τ²-Bench Telecom (AA run)Claude 3.5 Haiku by 13.211.424.6+13.2
- AA IntelligenceClaude 3.5 Haiku by 4.14.88.9+4.1
- AA Agentic IndexApertus 8B Instruct by 1.93.81.9+1.9
Questions people ask
Which is better, Apertus 8B Instruct or Claude 3.5 Haiku?
Claude 3.5 Haiku wins four of the five areas where both have results: coding, facts, long documents and following instructions. Apertus 8B Instruct wins none. They are level on reasoning.
Which is better for coding?
Claude 3.5 Haiku. It wins 2 of the 2 coding tests both models report; Apertus 8B Instruct wins none.
How do you compare the two?
We use the 13 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 4 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.