Apertus 8B Instruct vs Claude 3 Haiku
Wins 0 of 5 areas
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Wins 5 of 5 areas
Coding · Reasoning · Facts · Long documents · Following instructions
Claude 3 Haiku is the stronger all-rounder.Apertus 8B Instruct is cheaper.
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.
- FactsGetting facts right instead of making them up02Claude 3 Haiku2 of 2 tests
- ReasoningHard problems that need careful thinking01Claude 3 Haiku1 of 3 tests · 2 ties
- CodingWriting and fixing software01Claude 3 Haiku1 of 2 tests · 1 tie
- Long documentsFinding answers in very long texts01Claude 3 Haiku1 of 1 test
- Following instructionsDoing exactly what it is asked01Claude 3 Haiku1 of 1 test
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.
Apertus 8B Instruct costs 80% 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 Claude 3 Haiku pulls ahead
- Avoids making up answers it doesn't knowAA-Omniscience · Non-hallucination+15.6points ahead
- Code for real scientific research problemsSciCode+14.5points ahead
- Follows unfamiliar, precisely checkable instructionsIFBench+13.7points ahead
Where Apertus 8B Instruct pulls ahead
No clear win on a test scored out of 100.
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 Haiku
- SciCodeClaude 3 Haiku by 14.54.118.6+14.5
- Terminal-Bench Hardtie00.8tie
ReasoningClaude 3 Haiku
- GPQA DiamondClaude 3 Haiku by 11.825.637.4+11.8
- Humanity's Last Examtie54.1tie
- CritPttie00tie
FactsClaude 3 Haiku
- AA-Omniscience · Non-hallucinationClaude 3 Haiku by 15.63.919.5+15.6
- AA-Omniscience · AccuracyClaude 3 Haiku by 7.99.717.6+7.9
Following instructionsClaude 3 Haiku
- IFBenchClaude 3 Haiku by 13.722.436.1+13.7
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 Haiku by 28.6-77.2-48.6+28.6
- τ²-Bench Telecom (AA run)Claude 3 Haiku by 9.711.421.1+9.7
- AA Agentic IndexClaude 3 Haiku by 3.23.87+3.2
- AA Intelligencetie4.85.6tie
Questions people ask
Which is better, Apertus 8B Instruct or Claude 3 Haiku?
Claude 3 Haiku wins all five areas where both have results: coding, reasoning, facts, long documents and following instructions. Apertus 8B Instruct wins none, but costs 80% less.
Which is better for coding?
Claude 3 Haiku. It wins 1 of the 2 coding tests both models report; Apertus 8B Instruct wins none, and 1 is a tie.
Which is cheaper?
Apertus 8B Instruct costs $0.10 per million input tokens and $0.20 per million output tokens; Claude 3 Haiku costs $0.25 and $1.25. That makes Apertus 8B Instruct about 80% cheaper for the same work.
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.