Model comparison
Chatgpt 4o Latest 20250326 vs Llama 3.1-405B
Chatgpt 4o Latest 20250326 is the stronger model overall, scoring 43.8 to 30.7 on the Noometry Index.
Last verified . 20 shared benchmarks.
MetaSummary
- They share 20 benchmarks with published results for both. Chatgpt 4o Latest 20250326 scores higher in 8 categories and Llama 3.1-405B in 0 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where Chatgpt 4o Latest 20250326 leads 62.6 to 38.9.
- The biggest single-benchmark swing is Kagi LLM Benchmark: 75% for Chatgpt 4o Latest 20250326 and 45% for Llama 3.1-405B.
- Llama 3.1-405B has downloadable open weights; the other is API-only.
Side by side
| Chatgpt 4o Latest 20250326 | Llama 3.1-405B | |
|---|---|---|
| Provider | OpenAI | Meta |
| Noometry Index | 43.8 | 30.7 |
| Released | — | 2024-07-23 |
| Weights | Proprietary | Open |
| Context window | — | — |
| Max output | — | — |
| Input $ / M tokens | — | — |
| Output $ / M tokens | — | — |
| Results tracked | 21 | 42 |
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Category by category
Coding Chatgpt 4o Latest 20250326 leads
Chatgpt 4o Latest 20250326: 41.6 (#122), Llama 3.1-405B: 33.1 (#262)
| Benchmark | Chatgpt 4o Latest 20250326 | Llama 3.1-405B |
|---|---|---|
| LMArena Coding | 1413 | 1291 |
| WeirdML | — | 21.4% |
Agentic & Tool Use Not comparable
Chatgpt 4o Latest 20250326: —, Llama 3.1-405B: 21.0 (#140)
| Benchmark | Chatgpt 4o Latest 20250326 | Llama 3.1-405B |
|---|---|---|
| TheAgentCompany | — | 7.4% |
| Cybench | — | 7.5% |
Reasoning Chatgpt 4o Latest 20250326 leads
Chatgpt 4o Latest 20250326: 33.8 (#71), Llama 3.1-405B: 16.8 (#300)
| Benchmark | Chatgpt 4o Latest 20250326 | Llama 3.1-405B |
|---|---|---|
| Kagi LLM Benchmark | 75% | 45% |
| LMArena Hard Prompts | 1424 | 1269 |
| SimpleBench | — | 23% |
| DTBench | — | 61.4% |
| BIG-Bench Hard | — | 82.9% |
| Epoch Capabilities Index | — | 128.75 |
| ForecastBench | — | 59.9 |
| HellaSwag | — | 89.2% |
| PIQA | — | 85.9% |
| WinoGrande | — | 89.2% |
Math Chatgpt 4o Latest 20250326 leads
Chatgpt 4o Latest 20250326: 38.6 (#134), Llama 3.1-405B: 18.4 (#290)
| Benchmark | Chatgpt 4o Latest 20250326 | Llama 3.1-405B |
|---|---|---|
| LMArena Math | 1407 | 1281 |
| OTIS Mock AIME 2024-2025 | — | 9.7% |
| Omni-MATH | — | 24.9% |
| MATH Level 5 | — | 49.8% |
Knowledge Chatgpt 4o Latest 20250326 leads
Chatgpt 4o Latest 20250326: 39.2 (#137), Llama 3.1-405B: 30.4 (#227)
| Benchmark | Chatgpt 4o Latest 20250326 | Llama 3.1-405B |
|---|---|---|
| Confabulations | 16.6% | 17.6% |
| LMArena Expert | 1401 | 1243 |
| GPQA Diamond | — | 50.9% |
| MMLU-Pro | — | 72.3% |
| GPQA (HELM) | — | 52.2% |
| ARC (AI2) Challenge | — | 95.3% |
| MMLU | — | 84.5% |
| TriviaQA | — | 82.7% |
Multimodal Not comparable
Chatgpt 4o Latest 20250326: 39.6 (#58), Llama 3.1-405B: —
| Benchmark | Chatgpt 4o Latest 20250326 | Llama 3.1-405B |
|---|---|---|
| LMArena Vision | 1243 | — |
Multilingual Chatgpt 4o Latest 20250326 leads
Chatgpt 4o Latest 20250326: 52.9 (#76), Llama 3.1-405B: 40.7 (#214)
| Benchmark | Chatgpt 4o Latest 20250326 | Llama 3.1-405B |
|---|---|---|
| LMArena Non-English | 1419 | 1248 |
| LMArena Chinese | 1457 | 1242 |
| LMArena French | 1446 | 1279 |
| LMArena German | 1423 | 1252 |
| LMArena Japanese | 1405 | 1208 |
| LMArena Korean | 1396 | 1184 |
| LMArena Russian | 1429 | 1265 |
| LMArena Spanish | 1434 | 1260 |
Instruction Following Chatgpt 4o Latest 20250326 leads
Chatgpt 4o Latest 20250326: 74.0 (#107), Llama 3.1-405B: 65.9 (#214)
| Benchmark | Chatgpt 4o Latest 20250326 | Llama 3.1-405B |
|---|---|---|
| LMArena Instruction Following | 1403 | 1259 |
| IFEval | — | 81.1% |
Long Context Chatgpt 4o Latest 20250326 leads
Chatgpt 4o Latest 20250326: 43.1 (#107), Llama 3.1-405B: 38.4 (#197)
| Benchmark | Chatgpt 4o Latest 20250326 | Llama 3.1-405B |
|---|---|---|
| LMArena Longer Query | 1413 | 1266 |
Writing & Preference Chatgpt 4o Latest 20250326 leads
Chatgpt 4o Latest 20250326: 62.6 (#72), Llama 3.1-405B: 38.9 (#251)
| Benchmark | Chatgpt 4o Latest 20250326 | Llama 3.1-405B |
|---|---|---|
| LMArena Text | 1429 | 1284 |
| LMArena Creative Writing | 1405 | 1262 |
| EQ-Bench Creative Writing | 1501 | 870 |
| LMArena Multi-Turn | 1454 | 1297 |
| WildBench | — | 78.3% |
Frequently asked questions
Is Chatgpt 4o Latest 20250326 better than Llama 3.1-405B?
Chatgpt 4o Latest 20250326 is the stronger model overall, scoring 43.8 to 30.7 on the Noometry Index.
Is Chatgpt 4o Latest 20250326 or Llama 3.1-405B better for coding?
Chatgpt 4o Latest 20250326 scores higher on coding benchmarks: 41.6 versus 33.1 in the Noometry coding category.
How many benchmarks do Chatgpt 4o Latest 20250326 and Llama 3.1-405B share?
20 benchmarks have published results for both models. Chatgpt 4o Latest 20250326 has 21 scored results on Noometry and Llama 3.1-405B has 42.