Model comparison
GLM-4.5 vs Kimi K2.5 Instant
Kimi K2.5 Instant is the stronger model overall, scoring 43.6 to 42.0 on the Noometry Index.
Last verified . 16 shared benchmarks.
Summary
- They share 16 benchmarks with published results for both. GLM-4.5 scores higher in 1 category and Kimi K2.5 Instant in 7 categories; 6 gaps are clear of the uncertainty.
- The widest gap is in long context, where Kimi K2.5 Instant leads 43.9 to 38.2.
Side by side
| GLM-4.5 | Kimi K2.5 Instant | |
|---|---|---|
| Provider | Z.ai (Zhipu) | Moonshot AI |
| Noometry Index | 42.0 | 43.6 |
| Released | 2025-07-27 | — |
| Weights | Open | Open |
| Context window | 131K | — |
| Max output | 98K | — |
| Input $ / M tokens | $0.60 | — |
| Output $ / M tokens | $2.20 | — |
| Results tracked | 27 | 18 |
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Category by category
Coding Kimi K2.5 Instant leads
GLM-4.5: 41.4 (#125), Kimi K2.5 Instant: 42.6 (#97)
| Benchmark | GLM-4.5 | Kimi K2.5 Instant |
|---|---|---|
| LMArena Coding | 1434 | 1484 |
| SWE-bench Verified (bash only) | 54.2% | — |
| LMArena WebDev | — | 1404 |
| WeirdML | 40.6% | — |
| ALE-Bench | 344.82 | — |
| AlgoTune | 1.52 | — |
Reasoning Kimi K2.5 Instant leads
GLM-4.5: 28.6 (#100), Kimi K2.5 Instant: 29.7 (#90)
| Benchmark | GLM-4.5 | Kimi K2.5 Instant |
|---|---|---|
| LMArena Hard Prompts | 1429 | 1443 |
| Kagi LLM Benchmark | 57.9% | — |
Math Too close to call
GLM-4.5: 39.0 (#116), Kimi K2.5 Instant: 39.4 (#105)
| Benchmark | GLM-4.5 | Kimi K2.5 Instant |
|---|---|---|
| LMArena Math | 1427 | 1442 |
Knowledge Kimi K2.5 Instant leads
GLM-4.5: 35.9 (#179), Kimi K2.5 Instant: 40.2 (#123)
| Benchmark | GLM-4.5 | Kimi K2.5 Instant |
|---|---|---|
| LMArena Expert | 1433 | 1440 |
| Humanity's Last Exam | 8.3% | — |
| Confabulations | 11.3% | — |
Multimodal Not comparable
GLM-4.5: —, Kimi K2.5 Instant: 40.2 (#50)
| Benchmark | GLM-4.5 | Kimi K2.5 Instant |
|---|---|---|
| LMArena Vision | — | 1254 |
Multilingual Too close to call
GLM-4.5: 52.8 (#77), Kimi K2.5 Instant: 52.0 (#94)
| Benchmark | GLM-4.5 | Kimi K2.5 Instant |
|---|---|---|
| LMArena Non-English | 1417 | 1406 |
| LMArena Chinese | 1465 | 1449 |
| LMArena French | 1418 | 1403 |
| LMArena German | 1407 | 1413 |
| LMArena Korean | 1380 | 1378 |
| LMArena Russian | 1414 | 1404 |
| LMArena Spanish | 1454 | 1447 |
| LMArena Japanese | 1415 | — |
Instruction Following Kimi K2.5 Instant leads
GLM-4.5: 74.1 (#104), Kimi K2.5 Instant: 75.3 (#65)
| Benchmark | GLM-4.5 | Kimi K2.5 Instant |
|---|---|---|
| LMArena Instruction Following | 1404 | 1430 |
Long Context Kimi K2.5 Instant leads
GLM-4.5: 38.2 (#201), Kimi K2.5 Instant: 43.9 (#83)
| Benchmark | GLM-4.5 | Kimi K2.5 Instant |
|---|---|---|
| LMArena Longer Query | 1412 | 1435 |
| Fiction.LiveBench | 58.3% | — |
Writing & Preference Kimi K2.5 Instant leads
GLM-4.5: 57.5 (#127), Kimi K2.5 Instant: 60.6 (#95)
| Benchmark | GLM-4.5 | Kimi K2.5 Instant |
|---|---|---|
| LMArena Text | 1430 | 1420 |
| LMArena Creative Writing | 1395 | 1381 |
| LMArena Multi-Turn | 1415 | 1427 |
| Short-Story Creative Writing | 73.4% | — |
| EQ-Bench Creative Writing | 1343 | — |
Frequently asked questions
Is GLM-4.5 better than Kimi K2.5 Instant?
Kimi K2.5 Instant is the stronger model overall, scoring 43.6 to 42.0 on the Noometry Index.
Is GLM-4.5 or Kimi K2.5 Instant better for coding?
Kimi K2.5 Instant scores higher on coding benchmarks: 42.6 versus 41.4 in the Noometry coding category.
How many benchmarks do GLM-4.5 and Kimi K2.5 Instant share?
16 benchmarks have published results for both models. GLM-4.5 has 27 scored results on Noometry and Kimi K2.5 Instant has 18.