Model comparison
Chatgpt 4o Latest 20250326 vs o3
o3 is the stronger model overall, scoring 47.5 to 43.8 on the Noometry Index.
Last verified . 21 shared benchmarks.
Summary
- They share 21 benchmarks with published results for both. Chatgpt 4o Latest 20250326 scores higher in 3 categories and o3 in 6 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where o3 leads 54.6 to 39.2.
- The biggest single-benchmark swing is Kagi LLM Benchmark: 75% for Chatgpt 4o Latest 20250326 and 67.6% for o3.
Side by side
| Chatgpt 4o Latest 20250326 | o3 | |
|---|---|---|
| Provider | OpenAI | OpenAI |
| Noometry Index | 43.8 | 47.5 |
| Released | — | 2025-04-16 |
| Weights | Proprietary | Proprietary |
| Context window | — | 200K |
| Max output | — | 100K |
| Input $ / M tokens | — | $2 |
| Output $ / M tokens | — | $8 |
| Results tracked | 21 | 63 |
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Category by category
Coding o3 leads
Chatgpt 4o Latest 20250326: 41.6 (#122), o3: 46.8 (#64)
| Benchmark | Chatgpt 4o Latest 20250326 | o3 |
|---|---|---|
| LMArena Coding | 1413 | 1408 |
| SWE-bench Verified | — | 62.3% |
| SWE-bench Verified (bash only) | — | 58.4% |
| Aider Polyglot | — | 81.3% |
| GSO | — | 8.8% |
| WeirdML | — | 52.4% |
| CadEval | — | 74% |
| ALE-Bench | — | 933.55 |
Agentic & Tool Use Not comparable
Chatgpt 4o Latest 20250326: —, o3: 34.5 (#44)
| Benchmark | Chatgpt 4o Latest 20250326 | o3 |
|---|---|---|
| Berkeley Function Calling Leaderboard | — | 63% |
| GDPval | — | 30.8% |
| DeepResearch Bench | — | 45.2% |
| OSWorld | — | 23% |
| LMArena Search | — | 1144 |
| METR Time Horizons | — | 65.4% |
Reasoning Chatgpt 4o Latest 20250326 leads
Chatgpt 4o Latest 20250326: 33.8 (#71), o3: 32.0 (#78)
| Benchmark | Chatgpt 4o Latest 20250326 | o3 |
|---|---|---|
| Kagi LLM Benchmark | 75% | 67.6% |
| LMArena Hard Prompts | 1424 | 1402 |
| ARC-AGI-2 | — | 6.5% |
| SimpleBench | — | 53.1% |
| ARC-AGI-1 | — | 60.8% |
| CritPt | — | 1.4% |
| Chess Puzzles | — | 38% |
| EnigmaEval | — | 13.1% |
| Mystery Game Puzzles | — | 29% |
| DTBench | — | 84.8% |
| LMCA | — | 39.7% |
| Epoch Capabilities Index | — | 146.86 |
| ForecastBench | — | 62.5 |
Math o3 leads
Chatgpt 4o Latest 20250326: 38.6 (#134), o3: 50.2 (#58)
| Benchmark | Chatgpt 4o Latest 20250326 | o3 |
|---|---|---|
| LMArena Math | 1407 | 1426 |
| FrontierMath (Tiers 1-3) | — | 33.3% |
| OTIS Mock AIME 2024-2025 | — | 84.4% |
| Omni-MATH | — | 71.4% |
| MATH Level 5 | — | 97.8% |
| FrontierMath (Feb 2025 set) | — | 18.7% |
| FrontierMath Tier 4 (v1) | — | 2.1% |
Knowledge o3 leads
Chatgpt 4o Latest 20250326: 39.2 (#137), o3: 54.6 (#52)
| Benchmark | Chatgpt 4o Latest 20250326 | o3 |
|---|---|---|
| Confabulations | 16.6% | 14.4% |
| LMArena Expert | 1401 | 1402 |
| GPQA Diamond | — | 81.8% |
| Humanity's Last Exam | — | 20.3% |
| SimpleQA Verified | — | 49.4% |
| MMLU-Pro | — | 85.9% |
| GPQA (HELM) | — | 75.3% |
Multimodal o3 leads
Chatgpt 4o Latest 20250326: 39.6 (#58), o3: 41.4 (#36)
| Benchmark | Chatgpt 4o Latest 20250326 | o3 |
|---|---|---|
| LMArena Vision | 1243 | 1214 |
| GeoBench | — | 74% |
| VPCT | — | 52% |
Multilingual Chatgpt 4o Latest 20250326 leads
Chatgpt 4o Latest 20250326: 52.9 (#76), o3: 51.7 (#105)
| Benchmark | Chatgpt 4o Latest 20250326 | o3 |
|---|---|---|
| LMArena Non-English | 1419 | 1401 |
| LMArena Chinese | 1457 | 1437 |
| LMArena French | 1446 | 1430 |
| LMArena German | 1423 | 1420 |
| LMArena Japanese | 1405 | 1403 |
| LMArena Korean | 1396 | 1370 |
| LMArena Russian | 1429 | 1406 |
| LMArena Spanish | 1434 | 1395 |
Instruction Following Chatgpt 4o Latest 20250326 leads
Chatgpt 4o Latest 20250326: 74.0 (#107), o3: 72.8 (#127)
| Benchmark | Chatgpt 4o Latest 20250326 | o3 |
|---|---|---|
| LMArena Instruction Following | 1403 | 1368 |
| IFEval | — | 86.9% |
Long Context o3 leads
Chatgpt 4o Latest 20250326: 43.1 (#107), o3: 53.3 (#6)
| Benchmark | Chatgpt 4o Latest 20250326 | o3 |
|---|---|---|
| LMArena Longer Query | 1413 | 1372 |
| Fiction.LiveBench | — | 88.9% |
| CL-bench | — | 17.8% |
Writing & Preference Too close to call
Chatgpt 4o Latest 20250326: 62.6 (#72), o3: 63.5 (#64)
| Benchmark | Chatgpt 4o Latest 20250326 | o3 |
|---|---|---|
| LMArena Text | 1429 | 1410 |
| LMArena Creative Writing | 1405 | 1359 |
| EQ-Bench Creative Writing | 1501 | 1676 |
| LMArena Multi-Turn | 1454 | 1405 |
| Short-Story Creative Writing | — | 83.9% |
| WildBench | — | 86.1% |
Frequently asked questions
Is Chatgpt 4o Latest 20250326 better than o3?
o3 is the stronger model overall, scoring 47.5 to 43.8 on the Noometry Index.
Is Chatgpt 4o Latest 20250326 or o3 better for coding?
o3 scores higher on coding benchmarks: 46.8 versus 41.6 in the Noometry coding category.
How many benchmarks do Chatgpt 4o Latest 20250326 and o3 share?
21 benchmarks have published results for both models. Chatgpt 4o Latest 20250326 has 21 scored results on Noometry and o3 has 63.