GPT-5.6 Sol vs Nemotron 3 Ultra 550B A55B
Wins 6 of 7 areas
Coding · Agents · Reasoning · Facts · Math · Long documents
Wins 1 of 7 areas
Following instructions
GPT-5.6 Sol is the stronger all-rounder.Nemotron 3 Ultra 550B A55B is cheaper and better at following instructions.
Scores updated · 38 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 software60GPT-5.6 Sol6 of 6 tests
- AgentsCarrying out multi-step tasks on its own50GPT-5.6 Sol5 of 5 tests
- ReasoningHard problems that need careful thinking50GPT-5.6 Sol5 of 5 tests
- MathCompetition and research-level math20GPT-5.6 Sol2 of 2 tests
- FactsGetting facts right instead of making them up21GPT-5.6 Sol2 of 3 tests
- Long documentsFinding answers in very long texts10GPT-5.6 Sol1 of 1 test
- Following instructionsDoing exactly what it is asked02Nemotron 3 Ultra 550B A55B2 of 2 tests
Long documents rests on a single test.
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.
Nemotron 3 Ultra 550B A55B costs 87% less for the same work.
The biggest differences
The three tests each model wins by the widest margin. Scores are out of 100.
Where GPT-5.6 Sol pulls ahead
- Finds hard-to-locate facts by browsing the webBrowseComp+46points ahead
- Complex command-line tasks across many fieldsTerminal-Bench 4.0+39.4points ahead
- Multi-step tasks using many real software toolsMCP Atlas+38.9points ahead
Where Nemotron 3 Ultra 550B A55B pulls ahead
- Avoids making up answers it doesn't knowAA-Omniscience · Non-hallucination+62.5points ahead
- Follows unfamiliar, precisely checkable instructionsIFBench+8.7points ahead
- Follows detailed instructions exactlyLiveBench · Instruction Following+1.6points ahead
Every test, side by side
All 38 tests both models report. The winning score is in its model's colour; marks a score checked independently.
CodingGPT-5.6 Sol
- Terminal-Bench 2.1GPT-5.6 Sol by 34.18853.9+34.1
- Terminal-Bench HardGPT-5.6 Sol by 29.565.936.4+29.5
- LiveBench · Agentic CodingGPT-5.6 Sol by 17.556.238.7+17.5
- SciCodeGPT-5.6 Sol by 16.857.140.3+16.8
- SWE-bench ProGPT-5.6 Sol by 14.964.649.7+14.9
- LiveBench · CodingGPT-5.6 Sol by 13.283.970.7+13.2
AgentsGPT-5.6 Sol
- BrowseCompGPT-5.6 Sol by 4690.444.4+46
- Terminal-Bench 4.0GPT-5.6 Sol by 39.439.90.5+39.4
- MCP AtlasGPT-5.6 Sol by 38.983.644.7+38.9
- τ-Bench V3 · BankingGPT-5.6 Sol by 30.144.314.2+30.1
- GDPValGPT-5.6 Sol by 29.755.425.7+29.7
ReasoningGPT-5.6 Sol
- CritPtGPT-5.6 Sol by 29.232.33.1+29.2
- SimpleBenchGPT-5.6 Sol by 23.164.841.7+23.1
- Humanity's Last ExamGPT-5.6 Sol by 21.149.528.4+21.1
- LiveBench · ReasoningGPT-5.6 Sol by 1791.774.7+17
- GPQA DiamondGPT-5.6 Sol by 7.494.186.7+7.4
FactsGPT-5.6 Sol
- AA-Omniscience · Non-hallucinationNemotron 3 Ultra 550B A55B by 62.57.870.3+62.5
- SimpleQA VerifiedGPT-5.6 Sol by 37.369.732.4+37.3
- AA-Omniscience · AccuracyGPT-5.6 Sol by 36.859.422.6+36.8
MathGPT-5.6 Sol
- LiveBench · MathematicsGPT-5.6 Sol by 7.596.288.7+7.5
- AIME 2026GPT-5.6 Sol by 5.799.994.2+5.7
Following instructionsNemotron 3 Ultra 550B A55B
- IFBenchNemotron 3 Ultra 550B A55B by 8.772.781.4+8.7
- LiveBench · Instruction FollowingNemotron 3 Ultra 550B A55B by 1.671.873.5+1.6
Other results14 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.
- GDPval-AA v2GPT-5.6 Sol by 563 rating points17111148+563 rating
- Toolathlon VerifiedGPT-5.6 Sol by 40.674.934.3+40.6
- AA Agentic IndexGPT-5.6 Sol by 28.850.521.7+28.8
- Artificial Analysis Coding IndexGPT-5.6 Sol by 28.177.449.3+28.1
- HLE (with tools)GPT-5.6 Sol by 27.164.537.4+27.1
- livebench_data_analysisGPT-5.6 Sol by 25.379.854.5+25.3
- AA IntelligenceGPT-5.6 Sol by 24.14722.9+24.1
- AA-OmniscienceGPT-5.6 Sol by 22.422-0.4+22.4
- SWEBench Pro PublicGPT-5.6 Sol by 18.264.646.4+18.2
- livebench_languageGPT-5.6 Sol by 16.987.770.8+16.9
- τ³-Bench BankingGPT-5.6 Sol by 14.63318.4+14.6
- Global-MMLU-LiteGPT-5.6 Sol by 6.291.885.6+6.2
- τ²-Bench Telecom (AA run)GPT-5.6 Sol by 1.885.183.3+1.8
- StrongREJECTtie98.598.7tie
Questions people ask
Which is better, GPT-5.6 Sol or Nemotron 3 Ultra 550B A55B?
GPT-5.6 Sol wins six of the seven areas where both have results: coding, agents, reasoning, facts, math and long documents. Nemotron 3 Ultra 550B A55B wins following instructions, and costs 87% less.
Which is better for coding?
GPT-5.6 Sol. It wins 6 of the 6 coding tests both models report; Nemotron 3 Ultra 550B A55B wins none.
Which is cheaper?
GPT-5.6 Sol costs $4.00 per million input tokens and $20.00 per million output tokens; Nemotron 3 Ultra 550B A55B costs $0.60 and $2.50. That makes Nemotron 3 Ultra 550B A55B about 87% cheaper for the same work.
How do you compare the two?
We use the 38 benchmark tests both models have published scores on. The verdict counts the 24 tests in the eight capability areas, and a gap under one point (ten on rating-style scales) counts as a tie. The other 14 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.