Model comparison
GLM-4.5-Air vs Molmo 2 8b
GLM-4.5-Air and Molmo 2 8b score almost the same on the Noometry Index (38.9 vs 39.1), so choose on price, context window or the category you care about most.
Last verified . 4 shared benchmarks.
Allen Institute for AI (Ai2)Summary
- They share 4 benchmarks with published results for both. GLM-4.5-Air scores higher in 3 categories and Molmo 2 8b in 1 category; 4 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where GLM-4.5-Air leads 55.9 to 49.4.
Side by side
| GLM-4.5-Air | Molmo 2 8b | |
|---|---|---|
| Provider | Z.ai (Zhipu) | Allen Institute for AI (Ai2) |
| Noometry Index | 38.9 | 39.1 |
| Released | 2025-07-20 | — |
| Weights | Open | Open |
| Context window | 131K | — |
| Max output | 98K | — |
| Input $ / M tokens | $0.20 | — |
| Output $ / M tokens | $1.10 | — |
| Results tracked | 27 | 5 |
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Category by category
Coding Not comparable
GLM-4.5-Air: 33.3 (#259), Molmo 2 8b: —
| Benchmark | GLM-4.5-Air | Molmo 2 8b |
|---|---|---|
| GSO | 2.9% | — |
| LMArena Coding | 1397 | — |
Reasoning Molmo 2 8b leads
GLM-4.5-Air: 24.1 (#166), Molmo 2 8b: 25.6 (#146)
| Benchmark | GLM-4.5-Air | Molmo 2 8b |
|---|---|---|
| LMArena Hard Prompts | 1379 | 1287 |
| Kagi LLM Benchmark | 43% | — |
| ForecastBench | 59.2 | — |
Math Not comparable
GLM-4.5-Air: 36.2 (#170), Molmo 2 8b: —
| Benchmark | GLM-4.5-Air | Molmo 2 8b |
|---|---|---|
| Omni-MATH | 39.1% | — |
| LMArena Math | 1396 | — |
Knowledge Not comparable
GLM-4.5-Air: 35.0 (#191), Molmo 2 8b: —
| Benchmark | GLM-4.5-Air | Molmo 2 8b |
|---|---|---|
| Humanity's Last Exam | 8.1% | — |
| MMLU-Pro | 76.2% | — |
| Vectara Hallucination Rate | 9.3% | — |
| GPQA (HELM) | 59.4% | — |
| LMArena Expert | 1370 | — |
Multimodal Not comparable
GLM-4.5-Air: —, Molmo 2 8b: 30.2 (#112)
| Benchmark | GLM-4.5-Air | Molmo 2 8b |
|---|---|---|
| LMArena Vision | — | 1081 |
Multilingual GLM-4.5-Air leads
GLM-4.5-Air: 49.1 (#135), Molmo 2 8b: 42.7 (#190)
| Benchmark | GLM-4.5-Air | Molmo 2 8b |
|---|---|---|
| LMArena Non-English | 1366 | 1276 |
| LMArena Chinese | 1426 | — |
| LMArena French | 1399 | — |
| LMArena German | 1377 | — |
| LMArena Japanese | 1348 | — |
| LMArena Korean | 1308 | — |
| LMArena Russian | 1373 | — |
| LMArena Spanish | 1386 | — |
Instruction Following GLM-4.5-Air leads
GLM-4.5-Air: 69.6 (#171), Molmo 2 8b: 67.0 (#201)
| Benchmark | GLM-4.5-Air | Molmo 2 8b |
|---|---|---|
| LMArena Instruction Following | 1354 | 1270 |
| IFEval | 81.2% | — |
Long Context Not comparable
GLM-4.5-Air: 41.6 (#135), Molmo 2 8b: —
| Benchmark | GLM-4.5-Air | Molmo 2 8b |
|---|---|---|
| LMArena Longer Query | 1366 | — |
Writing & Preference GLM-4.5-Air leads
GLM-4.5-Air: 55.9 (#139), Molmo 2 8b: 49.4 (#191)
| Benchmark | GLM-4.5-Air | Molmo 2 8b |
|---|---|---|
| LMArena Text | 1384 | 1288 |
| LMArena Creative Writing | 1343 | — |
| WildBench | 78.9% | — |
| LMArena Multi-Turn | 1371 | — |
Frequently asked questions
Is GLM-4.5-Air better than Molmo 2 8b?
GLM-4.5-Air and Molmo 2 8b score almost the same on the Noometry Index (38.9 vs 39.1), so choose on price, context window or the category you care about most.
How many benchmarks do GLM-4.5-Air and Molmo 2 8b share?
4 benchmarks have published results for both models. GLM-4.5-Air has 27 scored results on Noometry and Molmo 2 8b has 5.