Model comparison
GPT-5.5 Pro vs Nemotron 3 Nano Omni 30B A3B
Head-to-head evidence from 1 shared benchmark result across 1 category. Overall scores shown here use the public BenchAlign v5 ranking lane.
Public leaderboard positions: GPT-5.5 Pro #38 (Estimated); Nemotron 3 Nano Omni 30B A3B #151 (Estimated). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. GPT-5.5 Pro and Nemotron 3 Nano Omni 30B A3B share 1 comparable benchmark result. 1 of 8 categories are comparable. 6 results are unique to GPT-5.5 Pro; 28 to Nemotron 3 Nano Omni 30B A3B.
Updated July 23, 2026- Shared results
- 1
- GPT-5.5 Pro only
- 6
- Nemotron 3 Nano Omni 30B A3B only
- 28
- Comparable categories
- 1 / 8
Pick GPT-5.5 Pro if you want the stronger benchmark profile. Nemotron 3 Nano Omni 30B A3B only becomes the better choice if knowledge is the priority or you want the cheaper token bill.
Confidence note. This is a partial-evidence comparison with 1 shared benchmark result across 1 evidence category; 1 of 8 categories currently have scoreable aggregates for both models. Treat the verdict as directional until coverage is more balanced.
Why this result
GPT-5.5 Pro is clearly ahead on the BenchAlign aggregate, 63.69 to 44.24. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
GPT-5.5 Pro is also the more expensive model on tokens at $30.00 input / $180.00 output per 1M tokens, versus $0.00 input / $0.00 output per 1M tokens for Nemotron 3 Nano Omni 30B A3B. That is roughly Infinityx on output cost alone. GPT-5.5 Pro gives you the larger context window at 1M, compared with 256K for Nemotron 3 Nano Omni 30B A3B.
Category breakdown
Exact category averages are shown below. Not measured means BenchLM does not have enough sourced public coverage for that model and category.
| Category | GPT-5.5 Pro | Δ | Nemotron 3 Nano Omni 30B A3B |
|---|---|---|---|
| Knowledge | GPT-5.5 Pro57.2 | Margin→ 19.1 | Nemotron 3 Nano Omni 30B A3B76.3 |
| Agentic | GPT-5.5 Pro90.1 | MarginNo overlap | Nemotron 3 Nano Omni 30B A3BNot measured |
| Coding | GPT-5.5 ProNot measured | MarginNo overlap | Nemotron 3 Nano Omni 30B A3B32.0 |
| Math | GPT-5.5 Pro48.1 | MarginNo overlap | Nemotron 3 Nano Omni 30B A3BNot measured |
| Multimodal | GPT-5.5 ProNot measured | MarginNo overlap | Nemotron 3 Nano Omni 30B A3B76.3 |
| Inst. Following | GPT-5.5 ProNot measured | MarginNo overlap | Nemotron 3 Nano Omni 30B A3B74.2 |
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | GPT-5.5 Pro | Nemotron 3 Nano Omni 30B A3B | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | GPT-5.5 Pro$30 input / $180 output | Nemotron 3 Nano Omni 30B A3B$0 input / $0 output | Nemotron 3 Nano Omni 30B A3B has the lower combined listed price. |
| Generation speedtokens per second | GPT-5.5 ProNot available | Nemotron 3 Nano Omni 30B A3BNot available | A complete speed comparison is not available. |
| First-answer latencyseconds to first token | GPT-5.5 ProNot available | Nemotron 3 Nano Omni 30B A3BNot available | A complete latency comparison is not available. |
| Context windowmaximum listed tokens | GPT-5.5 Pro1M | Nemotron 3 Nano Omni 30B A3B256K | GPT-5.5 Pro lists the larger context window. |
Benchmark Deep Dive
Agentic5 benchmarks
Coding3 benchmarks
Reasoning2 benchmarks
KnowledgeNemotron 3 Nano Omni 30B A3B wins11 benchmarks
| Benchmark | GPT-5.5 Pro | Nemotron 3 Nano Omni 30B A3B | Result |
|---|---|---|---|
| HLESource | 57.2% | — | Not comparable |
| HLE w/o toolsSource | 43.1% | — | Not comparable |
| MMLU-ProSource | — | 77.3% | Not comparable |
| GPQASource | — | 72.2% | Not comparable |
| GPQA-DSource | — | 72.2% | Not comparable |
| Artificial Analysis Intelligence IndexSource | — | 14.9% | Not comparable |
| AA-GPQA DiamondSource | — | 46.9% | Not comparable |
| AA-HLESource | — | 5.3% | Not comparable |
| AA-Omniscience IndexSource | — | -56.0% | Not comparable |
| AA-Omniscience AccuracySource | — | 14.8% | Not comparable |
| AA-Omniscience Hallucination RateSource | — | 83.1% | Not comparable |
Math4 benchmarks
Multimodal8 benchmarks
| Benchmark | GPT-5.5 Pro | Nemotron 3 Nano Omni 30B A3B | Result |
|---|---|---|---|
| MMMUSource | — | 70.8% | Not comparable |
| MMLongBench-DocSource | — | 57.5% | Not comparable |
| CharXivSource | — | 76.3% | Not comparable |
| ScreenSpot ProSource | — | 57.8% | Not comparable |
| Video-MME (w/o subtitle)Source | — | 72.2% | Not comparable |
| AI2D_TESTSource | — | 88.5% | Not comparable |
| RefCOCO (avg)Source | — | 90.5% | Not comparable |
| AA-MMMU-ProSource | — | 53.2% | Not comparable |
Frequently Asked Questions (2)
Which is better, GPT-5.5 Pro or Nemotron 3 Nano Omni 30B A3B?
GPT-5.5 Pro is ahead on BenchLM's BenchAlign leaderboard, 63.69 to 44.24.
Which is better for knowledge tasks, GPT-5.5 Pro or Nemotron 3 Nano Omni 30B A3B?
Nemotron 3 Nano Omni 30B A3B has the edge for knowledge tasks in this comparison, averaging 76.3 versus 57.2. GPT-5.5 Pro stays close enough that the answer can still flip depending on your workload.
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