Model comparison
GPT-5.4 nano vs o1-pro
GPT-5.4 nano is the stronger model overall, scoring 41.9 to 31.5 on the Noometry Index.
Last verified . 1 shared benchmarks.
Summary
- They share 1 benchmark with published results for both. GPT-5.4 nano scores higher in 2 categories and o1-pro in 0 categories; 2 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where GPT-5.4 nano leads 41.9 to 29.7.
- The biggest single-benchmark swing is ARC-AGI-1: 51.5% for GPT-5.4 nano and 23.3% for o1-pro.
- GPT-5.4 nano is cheaper at $0.20 / $1.25 per million input/output tokens, against $150 / $600 for o1-pro.
- GPT-5.4 nano accepts more context: 400K tokens versus 200K.
Side by side
| GPT-5.4 nano | o1-pro | |
|---|---|---|
| Provider | OpenAI | OpenAI |
| Noometry Index | 41.9 | 31.5 |
| Released | 2026-03-17 | 2025-03-19 |
| Weights | Proprietary | Proprietary |
| Context window | 400K | 200K |
| Max output | 128K | 100K |
| Input $ / M tokens | $0.20 | $150 |
| Output $ / M tokens | $1.25 | $600 |
| Results tracked | 40 | 3 |
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Category by category
Coding Not comparable
GPT-5.4 nano: 43.6 (#84), o1-pro: —
| Benchmark | GPT-5.4 nano | o1-pro |
|---|---|---|
| SciCode | 46.9% | — |
| WeirdML | 49.2% | — |
| LMArena Coding | 1405 | — |
| ALE-Bench | 1,005 | — |
Reasoning GPT-5.4 nano leads
GPT-5.4 nano: 23.7 (#173), o1-pro: 20.4 (#239)
| Benchmark | GPT-5.4 nano | o1-pro |
|---|---|---|
| ARC-AGI-1 | 51.5% | 23.3% |
| ARC-AGI-2 | 5.7% | — |
| Kagi LLM Benchmark | 39.7% | — |
| CritPt | 9.3% | — |
| Chess Puzzles | 30% | — |
| EnigmaEval | — | 6.1% |
| LMArena Hard Prompts | 1381 | — |
| Mystery Game Puzzles | 9% | — |
| DTBench | 80.3% | — |
| LMCA | 36.9% | — |
| Epoch Capabilities Index | 145.81 | — |
| ForecastBench | 57.3 | — |
Math Not comparable
GPT-5.4 nano: 40.9 (#88), o1-pro: —
| Benchmark | GPT-5.4 nano | o1-pro |
|---|---|---|
| FrontierMath (Tiers 1-3) | 44.9% | — |
| FrontierMath Tier 4 | 12.2% | — |
| OTIS Mock AIME 2024-2025 | 87.8% | — |
| ProofBench | 5% | — |
| LMArena Math | 1406 | — |
| FrontierMath (Feb 2025 set) | 25.9% | — |
| FrontierMath Tier 4 (v1) | 6.3% | — |
Knowledge GPT-5.4 nano leads
GPT-5.4 nano: 41.9 (#103), o1-pro: 29.7 (#234)
| Benchmark | GPT-5.4 nano | o1-pro |
|---|---|---|
| GPQA Diamond | 78.5% | — |
| Humanity's Last Exam | — | 8.1% |
| SimpleQA Verified | 11.7% | — |
| Vectara Hallucination Rate | 3.1% | — |
| LMArena Expert | 1396 | — |
Multimodal Not comparable
GPT-5.4 nano: 36.7 (#78), o1-pro: —
| Benchmark | GPT-5.4 nano | o1-pro |
|---|---|---|
| LMArena Vision | 1196 | — |
Multilingual Not comparable
GPT-5.4 nano: 48.6 (#140), o1-pro: —
| Benchmark | GPT-5.4 nano | o1-pro |
|---|---|---|
| LMArena Non-English | 1359 | — |
| LMArena Chinese | 1392 | — |
| LMArena French | 1396 | — |
| LMArena German | 1367 | — |
| LMArena Japanese | 1343 | — |
| LMArena Korean | 1320 | — |
| LMArena Russian | 1363 | — |
| LMArena Spanish | 1371 | — |
Instruction Following Not comparable
GPT-5.4 nano: 71.9 (#144), o1-pro: —
| Benchmark | GPT-5.4 nano | o1-pro |
|---|---|---|
| LMArena Instruction Following | 1362 | — |
Long Context Not comparable
GPT-5.4 nano: 41.6 (#137), o1-pro: —
| Benchmark | GPT-5.4 nano | o1-pro |
|---|---|---|
| LMArena Longer Query | 1366 | — |
Writing & Preference Not comparable
GPT-5.4 nano: 55.7 (#142), o1-pro: —
| Benchmark | GPT-5.4 nano | o1-pro |
|---|---|---|
| LMArena Text | 1372 | — |
| LMArena Creative Writing | 1314 | — |
| LMArena Multi-Turn | 1382 | — |
Frequently asked questions
Is GPT-5.4 nano better than o1-pro?
GPT-5.4 nano is the stronger model overall, scoring 41.9 to 31.5 on the Noometry Index.
Which is cheaper, GPT-5.4 nano or o1-pro?
GPT-5.4 nano is cheaper. It lists at $0.20 per million input tokens and $1.25 per million output tokens; o1-pro lists at $150 and $600.
Which has the bigger context window?
GPT-5.4 nano does, with 400K tokens against 200K.
How many benchmarks do GPT-5.4 nano and o1-pro share?
1 benchmark has published results for both models. GPT-5.4 nano has 40 scored results on Noometry and o1-pro has 3.