Model comparison
Chatgpt 4o Latest 20250326 vs MiMo-V2.5-Pro
MiMo-V2.5-Pro is the stronger model overall, scoring 45.2 to 43.8 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 1 category and MiMo-V2.5-Pro in 7 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Chatgpt 4o Latest 20250326 leads 33.8 to 26.8.
- MiMo-V2.5-Pro has downloadable open weights; the other is API-only.
Side by side
| Chatgpt 4o Latest 20250326 | MiMo-V2.5-Pro | |
|---|---|---|
| Provider | OpenAI | Xiaomi |
| Noometry Index | 43.8 | 45.2 |
| Released | — | 2026-04-22 |
| Weights | Proprietary | Open |
| Context window | — | 1.05M |
| Max output | — | 131K |
| Input $ / M tokens | — | $0.43 |
| Output $ / M tokens | — | $0.87 |
| Results tracked | 21 | 27 |
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Category by category
Coding MiMo-V2.5-Pro leads
Chatgpt 4o Latest 20250326: 41.6 (#122), MiMo-V2.5-Pro: 47.4 (#60)
| Benchmark | Chatgpt 4o Latest 20250326 | MiMo-V2.5-Pro |
|---|---|---|
| LMArena Coding | 1413 | 1503 |
| LMArena WebDev | — | 1479 |
| SciCode | — | 50.2% |
| ALE-Bench | — | 899.8 |
Reasoning Chatgpt 4o Latest 20250326 leads
Chatgpt 4o Latest 20250326: 33.8 (#71), MiMo-V2.5-Pro: 26.8 (#130)
| Benchmark | Chatgpt 4o Latest 20250326 | MiMo-V2.5-Pro |
|---|---|---|
| LMArena Hard Prompts | 1424 | 1488 |
| Kagi LLM Benchmark | 75% | — |
| NYT Connections (extended) | — | 34.4% |
| CritPt | — | 4% |
| DTBench | — | 84.5% |
| LMCA | — | 29.5% |
Math MiMo-V2.5-Pro leads
Chatgpt 4o Latest 20250326: 38.6 (#134), MiMo-V2.5-Pro: 40.0 (#96)
| Benchmark | Chatgpt 4o Latest 20250326 | MiMo-V2.5-Pro |
|---|---|---|
| LMArena Math | 1407 | 1481 |
| ProofBench | — | 22% |
Knowledge MiMo-V2.5-Pro leads
Chatgpt 4o Latest 20250326: 39.2 (#137), MiMo-V2.5-Pro: 42.2 (#98)
| Benchmark | Chatgpt 4o Latest 20250326 | MiMo-V2.5-Pro |
|---|---|---|
| LMArena Expert | 1401 | 1503 |
| Confabulations | 16.6% | — |
Multimodal Not comparable
Chatgpt 4o Latest 20250326: 39.6 (#58), MiMo-V2.5-Pro: —
| Benchmark | Chatgpt 4o Latest 20250326 | MiMo-V2.5-Pro |
|---|---|---|
| LMArena Vision | 1243 | — |
Multilingual MiMo-V2.5-Pro leads
Chatgpt 4o Latest 20250326: 52.9 (#76), MiMo-V2.5-Pro: 55.1 (#34)
| Benchmark | Chatgpt 4o Latest 20250326 | MiMo-V2.5-Pro |
|---|---|---|
| LMArena Non-English | 1419 | 1449 |
| LMArena Chinese | 1457 | 1507 |
| LMArena French | 1446 | 1488 |
| LMArena German | 1423 | 1458 |
| LMArena Japanese | 1405 | 1412 |
| LMArena Korean | 1396 | 1437 |
| LMArena Russian | 1429 | 1450 |
| LMArena Spanish | 1434 | 1471 |
Instruction Following MiMo-V2.5-Pro leads
Chatgpt 4o Latest 20250326: 74.0 (#107), MiMo-V2.5-Pro: 77.5 (#21)
| Benchmark | Chatgpt 4o Latest 20250326 | MiMo-V2.5-Pro |
|---|---|---|
| LMArena Instruction Following | 1403 | 1477 |
Long Context MiMo-V2.5-Pro leads
Chatgpt 4o Latest 20250326: 43.1 (#107), MiMo-V2.5-Pro: 45.4 (#37)
| Benchmark | Chatgpt 4o Latest 20250326 | MiMo-V2.5-Pro |
|---|---|---|
| LMArena Longer Query | 1413 | 1483 |
Writing & Preference MiMo-V2.5-Pro leads
Chatgpt 4o Latest 20250326: 62.6 (#72), MiMo-V2.5-Pro: 65.3 (#49)
| Benchmark | Chatgpt 4o Latest 20250326 | MiMo-V2.5-Pro |
|---|---|---|
| LMArena Text | 1429 | 1465 |
| LMArena Creative Writing | 1405 | 1440 |
| EQ-Bench Creative Writing | 1501 | 1493 |
| LMArena Multi-Turn | 1454 | 1477 |
| EQ-Bench 4 | — | 1208 |
Frequently asked questions
Is Chatgpt 4o Latest 20250326 better than MiMo-V2.5-Pro?
MiMo-V2.5-Pro is the stronger model overall, scoring 45.2 to 43.8 on the Noometry Index.
Is Chatgpt 4o Latest 20250326 or MiMo-V2.5-Pro better for coding?
MiMo-V2.5-Pro scores higher on coding benchmarks: 47.4 versus 41.6 in the Noometry coding category.
How many benchmarks do Chatgpt 4o Latest 20250326 and MiMo-V2.5-Pro share?
18 benchmarks have published results for both models. Chatgpt 4o Latest 20250326 has 21 scored results on Noometry and MiMo-V2.5-Pro has 27.