Model comparison
Chatgpt 4o Latest 20250326 vs Claude Opus 4.1
Chatgpt 4o Latest 20250326 is the stronger model overall, scoring 43.2 to 40.8 on the Noometry Index.
Last verified . 18 shared benchmarks.
Summary
- They share 18 benchmarks with published results for both. Chatgpt 4o Latest 20250326 scores higher in 5 categories and Claude Opus 4.1 in 4 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in math, where Chatgpt 4o Latest 20250326 leads 35.8 to 22.0.
Side by side
| Chatgpt 4o Latest 20250326 | Claude Opus 4.1 | |
|---|---|---|
| Provider | OpenAI | Anthropic |
| Noometry Index | 43.2 | 40.8 |
| Released | — | 2025-08-05 |
| Weights | Proprietary | Proprietary |
| Context window | — | 200K |
| Max output | — | 32K |
| Input $ / M tokens | — | $15 |
| Output $ / M tokens | — | $75 |
| Results tracked | 21 | 48 |
Sponsored placements are available on pages like this one. Advertise on Noometry
Category by category
Coding Claude Opus 4.1 leads
Chatgpt 4o Latest 20250326: 41.0 (#122), Claude Opus 4.1: 44.3 (#69)
| Benchmark | Chatgpt 4o Latest 20250326 | Claude Opus 4.1 |
|---|---|---|
| LMArena Coding | 1413 | 1479 |
| SWE-bench Verified | — | 73.3% |
| LMArena WebDev | — | 1390 |
| WeirdML | — | 45.9% |
| ALE-Bench | — | 674.77 |
| AlgoTune | — | 1.34 |
Agentic & Tool Use Not comparable
Chatgpt 4o Latest 20250326: —, Claude Opus 4.1: 34.8 (#38)
| Benchmark | Chatgpt 4o Latest 20250326 | Claude Opus 4.1 |
|---|---|---|
| Terminal-Bench | — | 38% |
| GDPval | — | 43.6% |
| Cybench | — | 42% |
| DeepResearch Bench | — | 48.3% |
| LMArena Search | — | 1148 |
| METR Time Horizons | — | 66.8% |
Reasoning Chatgpt 4o Latest 20250326 leads
Chatgpt 4o Latest 20250326: 32.8 (#64), Claude Opus 4.1: 31.6 (#70)
| Benchmark | Chatgpt 4o Latest 20250326 | Claude Opus 4.1 |
|---|---|---|
| LMArena Hard Prompts | 1424 | 1443 |
| SimpleBench | — | 60% |
| Kagi LLM Benchmark | 75% | — |
| Chess Puzzles | — | 7% |
| EnigmaEval | — | 7.2% |
| EBR-Bench | — | 7.9% |
| Mystery Game Puzzles | — | 21% |
| DTBench | — | 80% |
| LMCA | — | 37.1% |
| Epoch Capabilities Index | — | 144.11 |
| ForecastBench | — | 62 |
Math Chatgpt 4o Latest 20250326 leads
Chatgpt 4o Latest 20250326: 35.8 (#134), Claude Opus 4.1: 22.0 (#267)
| Benchmark | Chatgpt 4o Latest 20250326 | Claude Opus 4.1 |
|---|---|---|
| LMArena Math | 1407 | 1430 |
| FrontierMath (Tiers 1-3) | — | 12.6% |
| FrontierMath Tier 4 | — | 2.4% |
| OTIS Mock AIME 2024-2025 | — | 68.9% |
| FrontierMath (Feb 2025 set) | — | 7.2% |
| FrontierMath Tier 4 (v1) | — | 4.2% |
Knowledge Claude Opus 4.1 leads
Chatgpt 4o Latest 20250326: 38.7 (#131), Claude Opus 4.1: 41.9 (#93)
| Benchmark | Chatgpt 4o Latest 20250326 | Claude Opus 4.1 |
|---|---|---|
| Confabulations | 16.6% | 17.1% |
| LMArena Expert | 1400 | 1439 |
| GPQA Diamond | — | 77.3% |
| Humanity's Last Exam | — | 11.5% |
| Vectara Hallucination Rate | — | 11.8% |
Multimodal Chatgpt 4o Latest 20250326 leads
Chatgpt 4o Latest 20250326: 38.9 (#54), Claude Opus 4.1: 26.2 (#114)
| Benchmark | Chatgpt 4o Latest 20250326 | Claude Opus 4.1 |
|---|---|---|
| LMArena Vision | 1243 | — |
| VPCT | — | 35% |
Multilingual Chatgpt 4o Latest 20250326 leads
Chatgpt 4o Latest 20250326: 53.1 (#72), Claude Opus 4.1: 52.1 (#90)
| Benchmark | Chatgpt 4o Latest 20250326 | Claude Opus 4.1 |
|---|---|---|
| LMArena Non-English | 1419 | 1405 |
| LMArena Chinese | 1456 | 1427 |
| LMArena French | 1447 | 1432 |
| LMArena German | 1424 | 1412 |
| LMArena Japanese | 1406 | 1378 |
| LMArena Korean | 1397 | 1381 |
| LMArena Russian | 1429 | 1421 |
| LMArena Spanish | 1435 | 1448 |
Instruction Following Claude Opus 4.1 leads
Chatgpt 4o Latest 20250326: 74.2 (#102), Claude Opus 4.1: 75.8 (#53)
| Benchmark | Chatgpt 4o Latest 20250326 | Claude Opus 4.1 |
|---|---|---|
| LMArena Instruction Following | 1403 | 1436 |
Long Context Claude Opus 4.1 leads
Chatgpt 4o Latest 20250326: 43.1 (#104), Claude Opus 4.1: 44.5 (#60)
| Benchmark | Chatgpt 4o Latest 20250326 | Claude Opus 4.1 |
|---|---|---|
| LMArena Longer Query | 1413 | 1455 |
Writing & Preference Too close to call
Chatgpt 4o Latest 20250326: 62.8 (#68), Claude Opus 4.1: 62.6 (#70)
| Benchmark | Chatgpt 4o Latest 20250326 | Claude Opus 4.1 |
|---|---|---|
| LMArena Text | 1429 | 1419 |
| LMArena Creative Writing | 1406 | 1412 |
| LMArena Multi-Turn | 1454 | 1444 |
| Short-Story Creative Writing | — | 84.7% |
| EQ-Bench Creative Writing | 1501 | — |
Frequently asked questions
Is Chatgpt 4o Latest 20250326 better than Claude Opus 4.1?
Chatgpt 4o Latest 20250326 is the stronger model overall, scoring 43.2 to 40.8 on the Noometry Index.
Is Chatgpt 4o Latest 20250326 or Claude Opus 4.1 better for coding?
Claude Opus 4.1 scores higher on coding benchmarks: 44.3 versus 41.0 in the Noometry coding category.
How many benchmarks do Chatgpt 4o Latest 20250326 and Claude Opus 4.1 share?
18 benchmarks have published results for both models. Chatgpt 4o Latest 20250326 has 21 scored results on Noometry and Claude Opus 4.1 has 48.