Model comparison
GPT-5.4 mini vs GPT-5.4 nano
GPT-5.4 mini is the stronger model overall, scoring 44.8 to 41.9 on the Noometry Index. GPT-5.4 nano costs 3.6× less per token, which makes it the better buy when GPT-5.4 mini's lead doesn't matter for your workload.
Last verified . 40 shared benchmarks.
Summary
- They share 40 benchmarks with published results for both. GPT-5.4 mini scores higher in 9 categories and GPT-5.4 nano in 0 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where GPT-5.4 mini leads 51.4 to 41.8.
- The biggest single-benchmark swing is SimpleQA Verified: 29.4% for GPT-5.4 mini and 11.7% for GPT-5.4 nano.
- GPT-5.4 nano is cheaper at $0.20 / $1.25 per million input/output tokens, against $0.75 / $4.50 for GPT-5.4 mini.
Side by side
| GPT-5.4 mini | GPT-5.4 nano | |
|---|---|---|
| Provider | OpenAI | OpenAI |
| Noometry Index | 44.8 | 41.9 |
| Released | 2026-03-17 | 2026-03-17 |
| Weights | Proprietary | Proprietary |
| Context window | 400K | 400K |
| Max output | 128K | 128K |
| Input $ / M tokens | $0.75 | $0.20 |
| Output $ / M tokens | $4.50 | $1.25 |
| Results tracked | 46 | 40 |
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Category by category
Coding GPT-5.4 mini leads
GPT-5.4 mini: 45.0 (#67), GPT-5.4 nano: 43.1 (#82)
| Benchmark | GPT-5.4 mini | GPT-5.4 nano |
|---|---|---|
| SciCode | 49.9% | 46.9% |
| WeirdML | 60.3% | 49.2% |
| LMArena Coding | 1438 | 1404 |
| ALE-Bench | 1,189 | 1,005 |
| FrontierCode | 27% | — |
| LMArena WebDev | 1397 | — |
Agentic & Tool Use Not comparable
GPT-5.4 mini: 29.6 (#74), GPT-5.4 nano: —
| Benchmark | GPT-5.4 mini | GPT-5.4 nano |
|---|---|---|
| DeepResearch Bench | 36.3% | — |
Reasoning GPT-5.4 mini leads
GPT-5.4 mini: 30.3 (#77), GPT-5.4 nano: 23.8 (#159)
| Benchmark | GPT-5.4 mini | GPT-5.4 nano |
|---|---|---|
| ARC-AGI-2 | 18.9% | 5.7% |
| Kagi LLM Benchmark | 37.9% | 39.7% |
| ARC-AGI-1 | 63.7% | 51.5% |
| CritPt | 10% | 9.3% |
| Chess Puzzles | 24% | 30% |
| LMArena Hard Prompts | 1424 | 1380 |
| Mystery Game Puzzles | 11% | 9% |
| DTBench | 80% | 80.3% |
| LMCA | 40.8% | 36.9% |
| Epoch Capabilities Index | 148.83 | 145.78 |
| ForecastBench | 57 | 57.3 |
| NYT Connections (extended) | 61.8% | — |
| Thematic Generalization | 61.7% | — |
Math GPT-5.4 mini leads
GPT-5.4 mini: 45.4 (#63), GPT-5.4 nano: 40.7 (#76)
| Benchmark | GPT-5.4 mini | GPT-5.4 nano |
|---|---|---|
| FrontierMath (Tiers 1-3) | 51.2% | 44.9% |
| FrontierMath Tier 4 | 9.8% | 12.2% |
| OTIS Mock AIME 2024-2025 | 88.9% | 87.8% |
| ProofBench | 21% | 5% |
| LMArena Math | 1418 | 1406 |
| FrontierMath (Feb 2025 set) | 28.3% | 25.9% |
| FrontierMath Tier 4 (v1) | 2.1% | 6.3% |
Knowledge GPT-5.4 mini leads
GPT-5.4 mini: 51.4 (#62), GPT-5.4 nano: 41.8 (#94)
| Benchmark | GPT-5.4 mini | GPT-5.4 nano |
|---|---|---|
| GPQA Diamond | 86.9% | 78.5% |
| SimpleQA Verified | 29.4% | 11.7% |
| Vectara Hallucination Rate | 5.5% | 3.1% |
| LMArena Expert | 1434 | 1397 |
Multimodal GPT-5.4 mini leads
GPT-5.4 mini: 39.0 (#51), GPT-5.4 nano: 36.0 (#73)
| Benchmark | GPT-5.4 mini | GPT-5.4 nano |
|---|---|---|
| LMArena Vision | 1245 | 1196 |
Multilingual GPT-5.4 mini leads
GPT-5.4 mini: 52.1 (#94), GPT-5.4 nano: 48.8 (#136)
| Benchmark | GPT-5.4 mini | GPT-5.4 nano |
|---|---|---|
| LMArena Non-English | 1405 | 1359 |
| LMArena Chinese | 1446 | 1391 |
| LMArena French | 1440 | 1396 |
| LMArena German | 1407 | 1368 |
| LMArena Japanese | 1375 | 1342 |
| LMArena Korean | 1369 | 1321 |
| LMArena Russian | 1417 | 1363 |
| LMArena Spanish | 1403 | 1368 |
Instruction Following GPT-5.4 mini leads
GPT-5.4 mini: 74.3 (#99), GPT-5.4 nano: 72.1 (#139)
| Benchmark | GPT-5.4 mini | GPT-5.4 nano |
|---|---|---|
| LMArena Instruction Following | 1405 | 1362 |
Long Context GPT-5.4 mini leads
GPT-5.4 mini: 42.9 (#107), GPT-5.4 nano: 41.6 (#131)
| Benchmark | GPT-5.4 mini | GPT-5.4 nano |
|---|---|---|
| LMArena Longer Query | 1407 | 1365 |
Writing & Preference GPT-5.4 mini leads
GPT-5.4 mini: 64.2 (#56), GPT-5.4 nano: 55.9 (#137)
| Benchmark | GPT-5.4 mini | GPT-5.4 nano |
|---|---|---|
| LMArena Text | 1411 | 1372 |
| LMArena Creative Writing | 1370 | 1313 |
| LMArena Multi-Turn | 1429 | 1382 |
| EQ-Bench Creative Writing | 1665 | — |
Frequently asked questions
Is GPT-5.4 mini better than GPT-5.4 nano?
GPT-5.4 mini is the stronger model overall, scoring 44.8 to 41.9 on the Noometry Index. GPT-5.4 nano costs 3.6× less per token, which makes it the better buy when GPT-5.4 mini's lead doesn't matter for your workload.
Which is cheaper, GPT-5.4 mini or GPT-5.4 nano?
GPT-5.4 nano is cheaper. It lists at $0.20 per million input tokens and $1.25 per million output tokens; GPT-5.4 mini lists at $0.75 and $4.50.
Is GPT-5.4 mini or GPT-5.4 nano better for coding?
GPT-5.4 mini scores higher on coding benchmarks: 45.0 versus 43.1 in the Noometry coding category.
Which has the bigger context window?
Both accept 400K tokens.
How many benchmarks do GPT-5.4 mini and GPT-5.4 nano share?
40 benchmarks have published results for both models. GPT-5.4 mini has 46 scored results on Noometry and GPT-5.4 nano has 40.