Claude Haiku 4.5 vs INTELLECT-3
Wins 3 of 6 areas
Coding · Long documents · Following instructions
Wins 1 of 6 areas
Reasoning
Claude Haiku 4.5 wins more areas, narrowly.INTELLECT-3 is cheaper and better at reasoning.
Scores updated · 15 tests both models report · How we compare
Where each one wins
Tests won in each of the six 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 software20Claude Haiku 4.52 of 2 tests
- Long documentsFinding answers in very long texts10Claude Haiku 4.51 of 1 test
- Following instructionsDoing exactly what it is asked10Claude Haiku 4.51 of 1 test
- ReasoningHard problems that need careful thinking02INTELLECT-32 of 3 tests · 1 tie
- AgentsCarrying out multi-step tasks on its own00Even0 each · 1 tie
- FactsGetting facts right instead of making them up11Even1 each
Agents, 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.
INTELLECT-3 costs 78% less for the same work.
The biggest differences
The three tests each model wins by the widest margin. Scores are out of 100.
Where Claude Haiku 4.5 pulls ahead
- Avoids making up answers it doesn't knowAA-Omniscience · Non-hallucination+60.3points ahead
- Reasons across sets of long documentsAA-LCR+34.6points ahead
- Follows unfamiliar, precisely checkable instructionsIFBench+20.3points ahead
Where INTELLECT-3 pulls ahead
- Graduate-level biology, physics and chemistry questionsGPQA Diamond+8.9points ahead
- Very hard expert questions across many subjectsHumanity's Last Exam+2.7points ahead
- Answers hard knowledge questions correctlyAA-Omniscience · Accuracy+1.6points ahead
Every test, side by side
All 15 tests both models report. The winning score is in its model's colour; marks a score checked independently.
CodingClaude Haiku 4.5
- Terminal-Bench HardClaude Haiku 4.5 by 18.227.39.1+18.2
- SciCodeClaude Haiku 4.5 by 3.142.239.1+3.1
ReasoningINTELLECT-3
- GPQA DiamondINTELLECT-3 by 8.967.276.1+8.9
- Humanity's Last ExamINTELLECT-3 by 2.710.413.1+2.7
- CritPttie00.3tie
FactsEven
- AA-Omniscience · Non-hallucinationClaude Haiku 4.5 by 60.372.712.4+60.3
- AA-Omniscience · AccuracyINTELLECT-3 by 1.61819.6+1.6
Long documentsClaude Haiku 4.5
- AA-LCRClaude Haiku 4.5 by 34.674.339.7+34.6
Following instructionsClaude Haiku 4.5
- IFBenchClaude Haiku 4.5 by 20.354.334+20.3
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.
- AA-OmniscienceClaude Haiku 4.5 by 46.4-4.4-50.9+46.4
- τ²-Bench Telecom (AA run)Claude Haiku 4.5 by 28.154.726.6+28.1
- Artificial Analysis Coding IndexClaude Haiku 4.5 by 24.843.919.1+24.8
- AA Agentic IndexINTELLECT-3 by 9.510.319.8+9.5
- AA IntelligenceClaude Haiku 4.5 by 6.316.910.6+6.3
Questions people ask
Which is better, Claude Haiku 4.5 or INTELLECT-3?
Claude Haiku 4.5 wins three of the six areas where both have results: coding, long documents and following instructions. INTELLECT-3 wins reasoning, and costs 78% less. They are level on agents and facts.
Which is better for coding?
Claude Haiku 4.5. It wins 2 of the 2 coding tests both models report; INTELLECT-3 wins none.
Which is cheaper?
Claude Haiku 4.5 costs $1.00 per million input tokens and $5.00 per million output tokens; INTELLECT-3 costs $0.20 and $1.10. That makes INTELLECT-3 about 78% cheaper for the same work.
How do you compare the two?
We use the 15 benchmark tests both models have published scores on. The verdict counts the 10 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.