Model comparison
GPT-5.4 vs o3-mini
GPT-5.4 is the stronger model overall, scoring 59.4 to 36.7 on the Noometry Index. o3-mini costs 2.9× less per token, which makes it the better buy when GPT-5.4's lead doesn't matter for your workload.
Last verified . 36 shared benchmarks.
Summary
- They share 36 benchmarks with published results for both. GPT-5.4 scores higher in 9 categories and o3-mini in 0 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where GPT-5.4 leads 61.8 to 16.3.
- The biggest single-benchmark swing is ARC-AGI-2: 74% for GPT-5.4 and 3% for o3-mini.
- o3-mini is cheaper at $1.10 / $4.40 per million input/output tokens, against $2.50 / $15 for GPT-5.4.
- GPT-5.4 accepts more context: 1.05M tokens versus 200K.
Side by side
| GPT-5.4 | o3-mini | |
|---|---|---|
| Provider | OpenAI | OpenAI |
| Noometry Index | 59.4 | 36.7 |
| Released | 2026-03-05 | 2024-12-20 |
| Weights | Proprietary | Proprietary |
| Context window | 1.05M | 200K |
| Max output | 128K | 100K |
| Input $ / M tokens | $2.50 | $1.10 |
| Output $ / M tokens | $15 | $4.40 |
| Results tracked | 68 | 51 |
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Category by category
Coding GPT-5.4 leads
GPT-5.4: 52.6 (#33), o3-mini: 40.8 (#132)
| Benchmark | GPT-5.4 | o3-mini |
|---|---|---|
| SciCode | 56.6% | 39.8% |
| GSO | 31.4% | 1.3% |
| WeirdML | 77.7% | 43.7% |
| LMArena Coding | 1497 | 1378 |
| SWE-bench Verified | 76.9% | — |
| DeepSWE | 51.8% | — |
| Aider Polyglot | — | 60.4% |
| LMArena WebDev | 1465 | — |
| LiveBench Coding | — | 82.7% |
| MirrorCode | 15.6% | — |
| CadEval | — | 54% |
| ALE-Bench | 1,607 | — |
| AlgoTune | 1.85 | — |
Agentic & Tool Use GPT-5.4 leads
GPT-5.4: 46.5 (#13), o3-mini: 29.6 (#84)
| Benchmark | GPT-5.4 | o3-mini |
|---|---|---|
| Terminal-Bench | 81.8% | — |
| APEX-Agents | 52.4% | — |
| τ²-bench Banking | 39.4% | — |
| Cybench | — | 22.5% |
| DeepResearch Bench | 35.1% | — |
| PostTrainBench | 19% | — |
| GBAEval | 45.1% | — |
| LMArena Search | 1197 | — |
| METR Time Horizons | 74.3% | — |
| Vending-Bench 2 | 6,144 | — |
Reasoning GPT-5.4 leads
GPT-5.4: 61.8 (#19), o3-mini: 16.3 (#305)
| Benchmark | GPT-5.4 | o3-mini |
|---|---|---|
| ARC-AGI-2 | 74% | 3% |
| ARC-AGI-1 | 93.7% | 34.5% |
| CritPt | 23.4% | 0.3% |
| Chess Puzzles | 44% | 17% |
| LMArena Hard Prompts | 1485 | 1366 |
| Mystery Game Puzzles | 37% | 7% |
| DTBench | 94.4% | 68.8% |
| LMCA | 52% | 19% |
| Epoch Capabilities Index | 156.81 | 140.34 |
| ForecastBench | 59.5 | 59.6 |
| SimpleBench | — | 22.8% |
| Kagi LLM Benchmark | 63.8% | — |
| NYT Connections (extended) | 91.3% | — |
| EnigmaEval | 16% | — |
| Thematic Generalization | 80% | — |
| EBR-Bench | 25.4% | — |
| LiveBench Reasoning | — | 89.6% |
| LiveBench Data Analysis | — | 70.6% |
| LiveBench | — | 75.9% |
Math GPT-5.4 leads
GPT-5.4: 73.5 (#19), o3-mini: 28.1 (#244)
| Benchmark | GPT-5.4 | o3-mini |
|---|---|---|
| FrontierMath (Tiers 1-3) | 78.6% | 18.6% |
| FrontierMath Tier 4 | 49% | 0% |
| OTIS Mock AIME 2024-2025 | 97.8% | 76.9% |
| LMArena Math | 1488 | 1396 |
| FrontierMath (Feb 2025 set) | 47.6% | 12.4% |
| FrontierMath Tier 4 (v1) | 27.1% | 4.2% |
| MathArena Final-Answer Competitions | 83.1% | — |
| ProofBench | 56% | — |
| LiveBench Math | — | 77.3% |
| MATH Level 5 | — | 96.5% |
Knowledge GPT-5.4 leads
GPT-5.4: 65.3 (#14), o3-mini: 38.3 (#146)
| Benchmark | GPT-5.4 | o3-mini |
|---|---|---|
| GPQA Diamond | 93.3% | 77% |
| SimpleQA Verified | 45.1% | 15.3% |
| LMArena Expert | 1507 | 1364 |
| Humanity's Last Exam | 36.2% | — |
| Confabulations | — | 17.9% |
| Vectara Hallucination Rate | 7% | — |
Multimodal Not comparable
GPT-5.4: 43.7 (#20), o3-mini: —
| Benchmark | GPT-5.4 | o3-mini |
|---|---|---|
| LMArena Vision | 1303 | — |
| Blueprint-Bench 2 | 27.1% | — |
| Furniture Assembly | 37.5% | — |
| LMArena Document | 1471 | — |
Multilingual GPT-5.4 leads
GPT-5.4: 56.2 (#23), o3-mini: 45.7 (#164)
| Benchmark | GPT-5.4 | o3-mini |
|---|---|---|
| LMArena Non-English | 1465 | 1319 |
| LMArena Chinese | 1519 | 1379 |
| LMArena French | 1493 | 1334 |
| LMArena German | 1472 | 1303 |
| LMArena Japanese | 1485 | 1286 |
| LMArena Korean | 1448 | 1314 |
| LMArena Russian | 1480 | 1304 |
| LMArena Spanish | 1454 | 1321 |
Instruction Following GPT-5.4 leads
GPT-5.4: 77.1 (#27), o3-mini: 75.1 (#72)
| Benchmark | GPT-5.4 | o3-mini |
|---|---|---|
| LMArena Instruction Following | 1469 | 1337 |
| LiveBench Instruction Following | — | 84.4% |
Long Context GPT-5.4 leads
GPT-5.4: 50.3 (#8), o3-mini: 33.8 (#256)
| Benchmark | GPT-5.4 | o3-mini |
|---|---|---|
| LMArena Longer Query | 1473 | 1343 |
| Fiction.LiveBench | — | 50% |
| CL-bench | 27.9% | — |
| CL-bench Life | 21.7% | — |
Writing & Preference GPT-5.4 leads
GPT-5.4: 71.9 (#17), o3-mini: 50.3 (#182)
| Benchmark | GPT-5.4 | o3-mini |
|---|---|---|
| LMArena Text | 1469 | 1337 |
| LMArena Creative Writing | 1439 | 1286 |
| LMArena Multi-Turn | 1482 | 1320 |
| Short-Story Creative Writing | — | 61.7% |
| EQ-Bench Creative Writing | 1840 | — |
| EQ-Bench 4 | 1272 | — |
| LiveBench Language | — | 50.7% |
Frequently asked questions
Is GPT-5.4 better than o3-mini?
GPT-5.4 is the stronger model overall, scoring 59.4 to 36.7 on the Noometry Index. o3-mini costs 2.9× less per token, which makes it the better buy when GPT-5.4's lead doesn't matter for your workload.
Which is cheaper, GPT-5.4 or o3-mini?
o3-mini is cheaper. It lists at $1.10 per million input tokens and $4.40 per million output tokens; GPT-5.4 lists at $2.50 and $15.
Is GPT-5.4 or o3-mini better for coding?
GPT-5.4 scores higher on coding benchmarks: 52.6 versus 40.8 in the Noometry coding category.
Which has the bigger context window?
GPT-5.4 does, with 1.05M tokens against 200K.
How many benchmarks do GPT-5.4 and o3-mini share?
36 benchmarks have published results for both models. GPT-5.4 has 68 scored results on Noometry and o3-mini has 51.