Model comparison
Chatgpt 4o Latest 20250326 vs Grok 4.1 Fast
Chatgpt 4o Latest 20250326 is the stronger model overall, scoring 43.8 to 41.4 on the Noometry Index.
Last verified . 19 shared benchmarks.
Summary
- They share 19 benchmarks with published results for both. Chatgpt 4o Latest 20250326 scores higher in 8 categories and Grok 4.1 Fast in 1 category; 8 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Grok 4.1 Fast leads 43.4 to 33.8.
Side by side
| Chatgpt 4o Latest 20250326 | Grok 4.1 Fast | |
|---|---|---|
| Provider | OpenAI | xAI |
| Noometry Index | 43.8 | 41.4 |
| Released | — | 2025-06-27 |
| Weights | Proprietary | Proprietary |
| Context window | — | 128K |
| Max output | — | 30K |
| Input $ / M tokens | — | $0.20 |
| Output $ / M tokens | — | $0.50 |
| Results tracked | 21 | 32 |
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Category by category
Coding Chatgpt 4o Latest 20250326 leads
Chatgpt 4o Latest 20250326: 41.6 (#122), Grok 4.1 Fast: 34.1 (#245)
| Benchmark | Chatgpt 4o Latest 20250326 | Grok 4.1 Fast |
|---|---|---|
| LMArena Coding | 1413 | 1411 |
| LMArena WebDev | — | 1242 |
| ALE-Bench | — | 394.93 |
Agentic & Tool Use Not comparable
Chatgpt 4o Latest 20250326: —, Grok 4.1 Fast: 36.3 (#39)
| Benchmark | Chatgpt 4o Latest 20250326 | Grok 4.1 Fast |
|---|---|---|
| Berkeley Function Calling Leaderboard | — | 69.6% |
| τ²-bench Banking | — | 13.1% |
| LMArena Search | — | 1171 |
| Vending-Bench 2 | — | 1,107 |
Reasoning Grok 4.1 Fast leads
Chatgpt 4o Latest 20250326: 33.8 (#71), Grok 4.1 Fast: 43.4 (#49)
| Benchmark | Chatgpt 4o Latest 20250326 | Grok 4.1 Fast |
|---|---|---|
| LMArena Hard Prompts | 1424 | 1407 |
| SimpleBench | — | 56% |
| Kagi LLM Benchmark | 75% | — |
| NYT Connections (extended) | — | 87.4% |
| DTBench | — | 87.7% |
| ForecastBench | — | 61 |
Math Chatgpt 4o Latest 20250326 leads
Chatgpt 4o Latest 20250326: 38.6 (#134), Grok 4.1 Fast: 31.9 (#221)
| Benchmark | Chatgpt 4o Latest 20250326 | Grok 4.1 Fast |
|---|---|---|
| LMArena Math | 1407 | 1408 |
| MathArena Final-Answer Competitions | — | 60.9% |
| ProofBench | — | 4% |
Knowledge Chatgpt 4o Latest 20250326 leads
Chatgpt 4o Latest 20250326: 39.2 (#137), Grok 4.1 Fast: 33.1 (#207)
| Benchmark | Chatgpt 4o Latest 20250326 | Grok 4.1 Fast |
|---|---|---|
| LMArena Expert | 1401 | 1399 |
| Confabulations | 16.6% | — |
| Vectara Hallucination Rate | — | 17.8% |
Multimodal Chatgpt 4o Latest 20250326 leads
Chatgpt 4o Latest 20250326: 39.6 (#58), Grok 4.1 Fast: 37.0 (#76)
| Benchmark | Chatgpt 4o Latest 20250326 | Grok 4.1 Fast |
|---|---|---|
| LMArena Vision | 1243 | 1201 |
Multilingual Chatgpt 4o Latest 20250326 leads
Chatgpt 4o Latest 20250326: 52.9 (#76), Grok 4.1 Fast: 51.0 (#114)
| Benchmark | Chatgpt 4o Latest 20250326 | Grok 4.1 Fast |
|---|---|---|
| LMArena Non-English | 1419 | 1391 |
| LMArena Chinese | 1457 | 1441 |
| LMArena French | 1446 | 1415 |
| LMArena German | 1423 | 1404 |
| LMArena Japanese | 1405 | 1349 |
| LMArena Korean | 1396 | 1361 |
| LMArena Russian | 1429 | 1387 |
| LMArena Spanish | 1434 | 1413 |
Instruction Following Chatgpt 4o Latest 20250326 leads
Chatgpt 4o Latest 20250326: 74.0 (#107), Grok 4.1 Fast: 72.7 (#133)
| Benchmark | Chatgpt 4o Latest 20250326 | Grok 4.1 Fast |
|---|---|---|
| LMArena Instruction Following | 1403 | 1376 |
Long Context Too close to call
Chatgpt 4o Latest 20250326: 43.1 (#107), Grok 4.1 Fast: 42.4 (#126)
| Benchmark | Chatgpt 4o Latest 20250326 | Grok 4.1 Fast |
|---|---|---|
| LMArena Longer Query | 1413 | 1390 |
Writing & Preference Chatgpt 4o Latest 20250326 leads
Chatgpt 4o Latest 20250326: 62.6 (#72), Grok 4.1 Fast: 57.2 (#131)
| Benchmark | Chatgpt 4o Latest 20250326 | Grok 4.1 Fast |
|---|---|---|
| LMArena Text | 1429 | 1408 |
| LMArena Creative Writing | 1405 | 1394 |
| EQ-Bench Creative Writing | 1501 | 1327 |
| LMArena Multi-Turn | 1454 | 1389 |
Frequently asked questions
Is Chatgpt 4o Latest 20250326 better than Grok 4.1 Fast?
Chatgpt 4o Latest 20250326 is the stronger model overall, scoring 43.8 to 41.4 on the Noometry Index.
Is Chatgpt 4o Latest 20250326 or Grok 4.1 Fast better for coding?
Chatgpt 4o Latest 20250326 scores higher on coding benchmarks: 41.6 versus 34.1 in the Noometry coding category.
How many benchmarks do Chatgpt 4o Latest 20250326 and Grok 4.1 Fast share?
19 benchmarks have published results for both models. Chatgpt 4o Latest 20250326 has 21 scored results on Noometry and Grok 4.1 Fast has 32.