Claude Haiku 4.5 vs Nova 2.0 Omni Reasoning Medium
Wins 3 of 7 areas
Coding · Facts · Long documents
Wins 3 of 7 areas
Agents · Images and charts · Following instructions
The two are evenly matched.Claude Haiku 4.5 is better at coding and facts; Nova 2.0 Omni Reasoning Medium at agents and images and charts.
Scores updated · 16 tests both models report · How we compare
Where each one wins
Tests won in each of the seven 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
- FactsGetting facts right instead of making them up10Claude Haiku 4.51 of 2 tests · 1 tie
- Long documentsFinding answers in very long texts10Claude Haiku 4.51 of 1 test
- AgentsCarrying out multi-step tasks on its own01Nova 2.0 Omni Reasoning Medium1 of 1 test
- Images and chartsUnderstanding pictures, charts and video01Nova 2.0 Omni Reasoning Medium1 of 1 test
- Following instructionsDoing exactly what it is asked01Nova 2.0 Omni Reasoning Medium1 of 1 test
- ReasoningHard problems that need careful thinking11Even1 each · 1 tie
Agents, images and charts, 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.
Nova 2.0 Omni Reasoning Medium costs 53% 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+66points ahead
- Hard command-line tasks in a real terminalTerminal-Bench Hard+22.8points ahead
- Reasons across sets of long documentsAA-LCR+14.6points ahead
Where Nova 2.0 Omni Reasoning Medium pulls ahead
- Follows unfamiliar, precisely checkable instructionsIFBench+11.9points ahead
- Graduate-level biology, physics and chemistry questionsGPQA Diamond+8.8points ahead
- Harder college exam questions with imagesMMMU-Pro+3.3points ahead
Every test, side by side
All 16 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 22.827.34.5+22.8
- SciCodeClaude Haiku 4.5 by 642.236.2+6
AgentsNova 2.0 Omni Reasoning Medium
- GDPValNova 2.0 Omni Reasoning Medium by 2.311.814.1+2.3
ReasoningEven
- GPQA DiamondNova 2.0 Omni Reasoning Medium by 8.867.276+8.8
- Humanity's Last ExamClaude Haiku 4.5 by 3.410.47+3.4
- CritPttie00tie
FactsClaude Haiku 4.5
- AA-Omniscience · Non-hallucinationClaude Haiku 4.5 by 6672.76.7+66
- AA-Omniscience · Accuracytie1817.7tie
Images and chartsNova 2.0 Omni Reasoning Medium
- MMMU-ProNova 2.0 Omni Reasoning Medium by 3.358.661.9+3.3
Long documentsClaude Haiku 4.5
- AA-LCRClaude Haiku 4.5 by 14.674.359.7+14.6
Following instructionsNova 2.0 Omni Reasoning Medium
- IFBenchNova 2.0 Omni Reasoning Medium by 11.954.366.2+11.9
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 54.7-4.4-59.1+54.7
- Artificial Analysis Coding IndexClaude Haiku 4.5 by 28.843.915.1+28.8
- AA Agentic IndexNova 2.0 Omni Reasoning Medium by 27.910.338.2+27.9
- τ²-Bench Telecom (AA run)Nova 2.0 Omni Reasoning Medium by 25.754.780.4+25.7
- AA IntelligenceClaude Haiku 4.5 by 3.316.913.6+3.3
Questions people ask
Which is better, Claude Haiku 4.5 or Nova 2.0 Omni Reasoning Medium?
Claude Haiku 4.5 and Nova 2.0 Omni Reasoning Medium each win three of the seven areas where both have results. Claude Haiku 4.5 wins coding, facts and long documents; Nova 2.0 Omni Reasoning Medium wins agents, images and charts and following instructions. Nova 2.0 Omni Reasoning Medium costs 53% less. They are level on reasoning.
Which is better for coding?
Claude Haiku 4.5. It wins 2 of the 2 coding tests both models report; Nova 2.0 Omni Reasoning Medium wins none.
Which is cheaper?
Claude Haiku 4.5 costs $1.00 per million input tokens and $5.00 per million output tokens; Nova 2.0 Omni Reasoning Medium costs $0.30 and $2.50. That makes Nova 2.0 Omni Reasoning Medium about 53% cheaper for the same work.
How do you compare the two?
We use the 16 benchmark tests both models have published scores on. The verdict counts the 11 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.