Model comparison
Chatgpt 4o Latest 20250326 vs Grok 4.3
Chatgpt 4o Latest 20250326 and Grok 4.3 score almost the same on the Noometry Index (43.8 vs 43.8), so choose on price, context window or the category you care about most.
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 Grok 4.3 in 4 categories; 7 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where Grok 4.3 leads 52.5 to 39.2.
Side by side
| Chatgpt 4o Latest 20250326 | Grok 4.3 | |
|---|---|---|
| Provider | OpenAI | xAI |
| Noometry Index | 43.8 | 43.8 |
| Released | — | 2026-04-17 |
| Weights | Proprietary | Proprietary |
| Context window | — | 1M |
| Max output | — | 30K |
| Input $ / M tokens | — | $1.25 |
| Output $ / M tokens | — | $2.50 |
| Results tracked | 21 | 40 |
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Category by category
Coding Too close to call
Chatgpt 4o Latest 20250326: 41.6 (#122), Grok 4.3: 41.6 (#121)
| Benchmark | Chatgpt 4o Latest 20250326 | Grok 4.3 |
|---|---|---|
| LMArena Coding | 1413 | 1415 |
| LMArena WebDev | — | 1357 |
| SciCode | — | 47.3% |
| WeirdML | — | 49.9% |
| ALE-Bench | — | 944.17 |
Agentic & Tool Use Not comparable
Chatgpt 4o Latest 20250326: —, Grok 4.3: 27.7 (#99)
| Benchmark | Chatgpt 4o Latest 20250326 | Grok 4.3 |
|---|---|---|
| GDP.pdf | — | 8% |
| LMArena Search | — | 1165 |
| Vending-Bench 2 | — | 35.26 |
Reasoning Grok 4.3 leads
Chatgpt 4o Latest 20250326: 33.8 (#71), Grok 4.3: 35.9 (#68)
| Benchmark | Chatgpt 4o Latest 20250326 | Grok 4.3 |
|---|---|---|
| LMArena Hard Prompts | 1424 | 1396 |
| Kagi LLM Benchmark | 75% | — |
| NYT Connections (extended) | — | 55.2% |
| CritPt | — | 8% |
| Chess Puzzles | — | 25% |
| DTBench | — | 90.7% |
| LMCA | — | 38.3% |
| Epoch Capabilities Index | — | 149.16 |
| ForecastBench | — | 60.3 |
Math Grok 4.3 leads
Chatgpt 4o Latest 20250326: 38.6 (#134), Grok 4.3: 46.0 (#74)
| Benchmark | Chatgpt 4o Latest 20250326 | Grok 4.3 |
|---|---|---|
| LMArena Math | 1407 | 1388 |
| FrontierMath (Tiers 1-3) | — | 42.8% |
| FrontierMath Tier 4 | — | 14.6% |
| OTIS Mock AIME 2024-2025 | — | 93.3% |
| ProofBench | — | 11% |
Knowledge Grok 4.3 leads
Chatgpt 4o Latest 20250326: 39.2 (#137), Grok 4.3: 52.5 (#62)
| Benchmark | Chatgpt 4o Latest 20250326 | Grok 4.3 |
|---|---|---|
| LMArena Expert | 1401 | 1385 |
| GPQA Diamond | — | 88.8% |
| SimpleQA Verified | — | 33.2% |
| Confabulations | 16.6% | — |
Multimodal Chatgpt 4o Latest 20250326 leads
Chatgpt 4o Latest 20250326: 39.6 (#58), Grok 4.3: 31.6 (#104)
| Benchmark | Chatgpt 4o Latest 20250326 | Grok 4.3 |
|---|---|---|
| LMArena Vision | 1243 | 1229 |
| Blueprint-Bench 2 | — | 0% |
Multilingual Chatgpt 4o Latest 20250326 leads
Chatgpt 4o Latest 20250326: 52.9 (#76), Grok 4.3: 50.5 (#120)
| Benchmark | Chatgpt 4o Latest 20250326 | Grok 4.3 |
|---|---|---|
| LMArena Non-English | 1419 | 1385 |
| LMArena Chinese | 1457 | 1422 |
| LMArena French | 1446 | 1412 |
| LMArena German | 1423 | 1395 |
| LMArena Japanese | 1405 | 1379 |
| LMArena Korean | 1396 | 1356 |
| LMArena Russian | 1429 | 1399 |
| LMArena Spanish | 1434 | 1398 |
Instruction Following Chatgpt 4o Latest 20250326 leads
Chatgpt 4o Latest 20250326: 74.0 (#107), Grok 4.3: 72.1 (#140)
| Benchmark | Chatgpt 4o Latest 20250326 | Grok 4.3 |
|---|---|---|
| LMArena Instruction Following | 1403 | 1366 |
Long Context Too close to call
Chatgpt 4o Latest 20250326: 43.1 (#107), Grok 4.3: 42.5 (#123)
| Benchmark | Chatgpt 4o Latest 20250326 | Grok 4.3 |
|---|---|---|
| LMArena Longer Query | 1413 | 1393 |
Writing & Preference Chatgpt 4o Latest 20250326 leads
Chatgpt 4o Latest 20250326: 62.6 (#72), Grok 4.3: 58.5 (#118)
| Benchmark | Chatgpt 4o Latest 20250326 | Grok 4.3 |
|---|---|---|
| LMArena Text | 1429 | 1397 |
| LMArena Creative Writing | 1405 | 1380 |
| LMArena Multi-Turn | 1454 | 1406 |
| EQ-Bench Creative Writing | 1501 | — |
| EQ-Bench 4 | — | 1075 |
Frequently asked questions
Is Chatgpt 4o Latest 20250326 better than Grok 4.3?
Chatgpt 4o Latest 20250326 and Grok 4.3 score almost the same on the Noometry Index (43.8 vs 43.8), so choose on price, context window or the category you care about most.
Is Chatgpt 4o Latest 20250326 or Grok 4.3 better for coding?
They score almost the same on coding (41.6 vs 41.6); test both on your own repository before choosing.
How many benchmarks do Chatgpt 4o Latest 20250326 and Grok 4.3 share?
18 benchmarks have published results for both models. Chatgpt 4o Latest 20250326 has 21 scored results on Noometry and Grok 4.3 has 40.