Model comparison
Chatgpt 4o Latest 20250326 vs Kimi K2.5 Instant
Chatgpt 4o Latest 20250326 and Kimi K2.5 Instant score almost the same on the Noometry Index (43.8 vs 43.6), so choose on price, context window or the category you care about most.
Last verified . 17 shared benchmarks.
Summary
- They share 17 benchmarks with published results for both. Chatgpt 4o Latest 20250326 scores higher in 3 categories and Kimi K2.5 Instant in 6 categories; 5 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Chatgpt 4o Latest 20250326 leads 33.8 to 29.7.
- Kimi K2.5 Instant has downloadable open weights; the other is API-only.
Side by side
| Chatgpt 4o Latest 20250326 | Kimi K2.5 Instant | |
|---|---|---|
| Provider | OpenAI | Moonshot AI |
| Noometry Index | 43.8 | 43.6 |
| Released | — | — |
| Weights | Proprietary | Open |
| Context window | — | — |
| Max output | — | — |
| Input $ / M tokens | — | — |
| Output $ / M tokens | — | — |
| Results tracked | 21 | 18 |
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Category by category
Coding Kimi K2.5 Instant leads
Chatgpt 4o Latest 20250326: 41.6 (#122), Kimi K2.5 Instant: 42.6 (#97)
| Benchmark | Chatgpt 4o Latest 20250326 | Kimi K2.5 Instant |
|---|---|---|
| LMArena Coding | 1413 | 1484 |
| LMArena WebDev | — | 1404 |
Reasoning Chatgpt 4o Latest 20250326 leads
Chatgpt 4o Latest 20250326: 33.8 (#71), Kimi K2.5 Instant: 29.7 (#90)
| Benchmark | Chatgpt 4o Latest 20250326 | Kimi K2.5 Instant |
|---|---|---|
| LMArena Hard Prompts | 1424 | 1443 |
| Kagi LLM Benchmark | 75% | — |
Math Too close to call
Chatgpt 4o Latest 20250326: 38.6 (#134), Kimi K2.5 Instant: 39.4 (#105)
| Benchmark | Chatgpt 4o Latest 20250326 | Kimi K2.5 Instant |
|---|---|---|
| LMArena Math | 1407 | 1442 |
Knowledge Kimi K2.5 Instant leads
Chatgpt 4o Latest 20250326: 39.2 (#137), Kimi K2.5 Instant: 40.2 (#123)
| Benchmark | Chatgpt 4o Latest 20250326 | Kimi K2.5 Instant |
|---|---|---|
| LMArena Expert | 1401 | 1440 |
| Confabulations | 16.6% | — |
Multimodal Too close to call
Chatgpt 4o Latest 20250326: 39.6 (#58), Kimi K2.5 Instant: 40.2 (#50)
| Benchmark | Chatgpt 4o Latest 20250326 | Kimi K2.5 Instant |
|---|---|---|
| LMArena Vision | 1243 | 1254 |
Multilingual Too close to call
Chatgpt 4o Latest 20250326: 52.9 (#76), Kimi K2.5 Instant: 52.0 (#94)
| Benchmark | Chatgpt 4o Latest 20250326 | Kimi K2.5 Instant |
|---|---|---|
| LMArena Non-English | 1419 | 1406 |
| LMArena Chinese | 1457 | 1449 |
| LMArena French | 1446 | 1403 |
| LMArena German | 1423 | 1413 |
| LMArena Korean | 1396 | 1378 |
| LMArena Russian | 1429 | 1404 |
| LMArena Spanish | 1434 | 1447 |
| LMArena Japanese | 1405 | — |
Instruction Following Kimi K2.5 Instant leads
Chatgpt 4o Latest 20250326: 74.0 (#107), Kimi K2.5 Instant: 75.3 (#65)
| Benchmark | Chatgpt 4o Latest 20250326 | Kimi K2.5 Instant |
|---|---|---|
| LMArena Instruction Following | 1403 | 1430 |
Long Context Too close to call
Chatgpt 4o Latest 20250326: 43.1 (#107), Kimi K2.5 Instant: 43.9 (#83)
| Benchmark | Chatgpt 4o Latest 20250326 | Kimi K2.5 Instant |
|---|---|---|
| LMArena Longer Query | 1413 | 1435 |
Writing & Preference Chatgpt 4o Latest 20250326 leads
Chatgpt 4o Latest 20250326: 62.6 (#72), Kimi K2.5 Instant: 60.6 (#95)
| Benchmark | Chatgpt 4o Latest 20250326 | Kimi K2.5 Instant |
|---|---|---|
| LMArena Text | 1429 | 1420 |
| LMArena Creative Writing | 1405 | 1381 |
| LMArena Multi-Turn | 1454 | 1427 |
| EQ-Bench Creative Writing | 1501 | — |
Frequently asked questions
Is Chatgpt 4o Latest 20250326 better than Kimi K2.5 Instant?
Chatgpt 4o Latest 20250326 and Kimi K2.5 Instant score almost the same on the Noometry Index (43.8 vs 43.6), so choose on price, context window or the category you care about most.
Is Chatgpt 4o Latest 20250326 or Kimi K2.5 Instant better for coding?
Kimi K2.5 Instant scores higher on coding benchmarks: 42.6 versus 41.6 in the Noometry coding category.
How many benchmarks do Chatgpt 4o Latest 20250326 and Kimi K2.5 Instant share?
17 benchmarks have published results for both models. Chatgpt 4o Latest 20250326 has 21 scored results on Noometry and Kimi K2.5 Instant has 18.