Model comparison
Kimi K2.5 Instant vs o1-pro
Kimi K2.5 Instant is the stronger model overall, scoring 43.6 to 31.5 on the Noometry Index.
Last verified . 0 shared benchmarks.
Summary
- The widest gap is in knowledge, where Kimi K2.5 Instant leads 40.2 to 29.7.
- Kimi K2.5 Instant has downloadable open weights; the other is API-only.
Side by side
| Kimi K2.5 Instant | o1-pro | |
|---|---|---|
| Provider | Moonshot AI | OpenAI |
| Noometry Index | 43.6 | 31.5 |
| Released | — | 2025-03-19 |
| Weights | Open | Proprietary |
| Context window | — | 200K |
| Max output | — | 100K |
| Input $ / M tokens | — | $150 |
| Output $ / M tokens | — | $600 |
| Results tracked | 18 | 3 |
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Category by category
Coding Not comparable
Kimi K2.5 Instant: 42.6 (#97), o1-pro: —
| Benchmark | Kimi K2.5 Instant | o1-pro |
|---|---|---|
| LMArena WebDev | 1404 | — |
| LMArena Coding | 1484 | — |
Reasoning Kimi K2.5 Instant leads
Kimi K2.5 Instant: 29.7 (#90), o1-pro: 20.4 (#239)
| Benchmark | Kimi K2.5 Instant | o1-pro |
|---|---|---|
| ARC-AGI-1 | — | 23.3% |
| EnigmaEval | — | 6.1% |
| LMArena Hard Prompts | 1443 | — |
Math Not comparable
Kimi K2.5 Instant: 39.4 (#105), o1-pro: —
| Benchmark | Kimi K2.5 Instant | o1-pro |
|---|---|---|
| LMArena Math | 1442 | — |
Knowledge Kimi K2.5 Instant leads
Kimi K2.5 Instant: 40.2 (#123), o1-pro: 29.7 (#234)
| Benchmark | Kimi K2.5 Instant | o1-pro |
|---|---|---|
| Humanity's Last Exam | — | 8.1% |
| LMArena Expert | 1440 | — |
Multimodal Not comparable
Kimi K2.5 Instant: 40.2 (#50), o1-pro: —
| Benchmark | Kimi K2.5 Instant | o1-pro |
|---|---|---|
| LMArena Vision | 1254 | — |
Multilingual Not comparable
Kimi K2.5 Instant: 52.0 (#94), o1-pro: —
| Benchmark | Kimi K2.5 Instant | o1-pro |
|---|---|---|
| LMArena Non-English | 1406 | — |
| LMArena Chinese | 1449 | — |
| LMArena French | 1403 | — |
| LMArena German | 1413 | — |
| LMArena Korean | 1378 | — |
| LMArena Russian | 1404 | — |
| LMArena Spanish | 1447 | — |
Instruction Following Not comparable
Kimi K2.5 Instant: 75.3 (#65), o1-pro: —
| Benchmark | Kimi K2.5 Instant | o1-pro |
|---|---|---|
| LMArena Instruction Following | 1430 | — |
Long Context Not comparable
Kimi K2.5 Instant: 43.9 (#83), o1-pro: —
| Benchmark | Kimi K2.5 Instant | o1-pro |
|---|---|---|
| LMArena Longer Query | 1435 | — |
Writing & Preference Not comparable
Kimi K2.5 Instant: 60.6 (#95), o1-pro: —
| Benchmark | Kimi K2.5 Instant | o1-pro |
|---|---|---|
| LMArena Text | 1420 | — |
| LMArena Creative Writing | 1381 | — |
| LMArena Multi-Turn | 1427 | — |
Frequently asked questions
Is Kimi K2.5 Instant better than o1-pro?
Kimi K2.5 Instant is the stronger model overall, scoring 43.6 to 31.5 on the Noometry Index.
How many benchmarks do Kimi K2.5 Instant and o1-pro share?
0 benchmarks have published results for both models. Kimi K2.5 Instant has 18 scored results on Noometry and o1-pro has 3.