Claude Opus 4.5 vs Llama 3.3 Nemotron Super 49B V1
Wins 5 of 5 areas
Coding · Reasoning · Facts · Long documents · Following instructions
Wins 0 of 5 areas
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Claude Opus 4.5 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.
- ReasoningHard problems that need careful thinking30Claude Opus 4.53 of 3 tests
- CodingWriting and fixing software20Claude Opus 4.52 of 2 tests
- FactsGetting facts right instead of making them up20Claude Opus 4.52 of 2 tests
- Long documentsFinding answers in very long texts10Claude Opus 4.51 of 1 test
- Following instructionsDoing exactly what it is asked10Claude Opus 4.51 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.
The biggest differences
The tests each model wins by the widest margin, up to three each. Scores are out of 100.
Where Claude Opus 4.5 pulls ahead
- Reasons across sets of long documentsAA-LCR+59points ahead
- Avoids making up answers it doesn't knowAA-Omniscience · Non-hallucination+30points ahead
- Answers hard knowledge questions correctlyAA-Omniscience · Accuracy+29.5points ahead
Where Llama 3.3 Nemotron Super 49B V1 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 Opus 4.5
- Terminal-Bench HardClaude Opus 4.5 by 47470+47
- SciCodeClaude Opus 4.5 by 21.349.528.2+21.3
ReasoningClaude Opus 4.5
- Humanity's Last ExamClaude Opus 4.5 by 24.530.15.6+24.5
- GPQA DiamondClaude Opus 4.5 by 22.386.664.3+22.3
- CritPtClaude Opus 4.5 by 4.64.60+4.6
FactsClaude Opus 4.5
- AA-Omniscience · Non-hallucinationClaude Opus 4.5 by 30399+30
- AA-Omniscience · AccuracyClaude Opus 4.5 by 29.546.617.1+29.5
Following instructionsClaude Opus 4.5
- IFBenchClaude Opus 4.5 by 19.95838.1+19.9
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 Opus 4.5 by 72.314-58.3+72.3
- τ²-Bench Telecom (AA run)Claude Opus 4.5 by 62.689.526.9+62.6
- Artificial Analysis Coding IndexClaude Opus 4.5 by 38.447.89.4+38.4
- AA IntelligenceClaude Opus 4.5 by 20.229.18.9+20.2
Questions people ask
Which is better, Claude Opus 4.5 or Llama 3.3 Nemotron Super 49B V1?
Claude Opus 4.5 wins all five areas where both have results: coding, reasoning, facts, long documents and following instructions. Llama 3.3 Nemotron Super 49B V1 wins none.
Which is better for coding?
Claude Opus 4.5. It wins 2 of the 2 coding tests both models report; Llama 3.3 Nemotron Super 49B V1 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.