Model comparison
Molmo 2 8b vs Qwen3.5 Plus
Qwen3.5 Plus is the stronger model overall, scoring 42.9 to 39.1 on the Noometry Index.
Last verified . 0 shared benchmarks.
Allen Institute for AI (Ai2)
Alibaba (Qwen)Summary
- The widest gap is in reasoning, where Qwen3.5 Plus leads 32.8 to 25.6.
- Molmo 2 8b has downloadable open weights; the other is API-only.
Side by side
| Molmo 2 8b | Qwen3.5 Plus | |
|---|---|---|
| Provider | Allen Institute for AI (Ai2) | Alibaba (Qwen) |
| Noometry Index | 39.1 | 42.9 |
| Released | — | 2026-02-16 |
| Weights | Open | Proprietary |
| Context window | — | 1M |
| Max output | — | 66K |
| Input $ / M tokens | — | $0.40 |
| Output $ / M tokens | — | $2.40 |
| Results tracked | 5 | 15 |
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Category by category
Coding Not comparable
Molmo 2 8b: —, Qwen3.5 Plus: —
| Benchmark | Molmo 2 8b | Qwen3.5 Plus |
|---|---|---|
| ALE-Bench | — | 621.92 |
Agentic & Tool Use Not comparable
Molmo 2 8b: —, Qwen3.5 Plus: —
| Benchmark | Molmo 2 8b | Qwen3.5 Plus |
|---|---|---|
| Vending-Bench 2 | — | 0.54 |
Reasoning Qwen3.5 Plus leads
Molmo 2 8b: 25.6 (#146), Qwen3.5 Plus: 32.8 (#74)
| Benchmark | Molmo 2 8b | Qwen3.5 Plus |
|---|---|---|
| Chess Puzzles | — | 22% |
| LMArena Hard Prompts | 1287 | — |
| Mystery Game Puzzles | — | 17% |
| DTBench | — | 80.5% |
| LMCA | — | 36.4% |
| Epoch Capabilities Index | — | 146.78 |
Math Not comparable
Molmo 2 8b: —, Qwen3.5 Plus: 49.6 (#61)
| Benchmark | Molmo 2 8b | Qwen3.5 Plus |
|---|---|---|
| OTIS Mock AIME 2024-2025 | — | 86.7% |
| FrontierMath (Feb 2025 set) | — | 21% |
| FrontierMath Tier 4 (v1) | — | 2.1% |
Knowledge Not comparable
Molmo 2 8b: —, Qwen3.5 Plus: 46.0 (#83)
| Benchmark | Molmo 2 8b | Qwen3.5 Plus |
|---|---|---|
| GPQA Diamond | — | 84.8% |
| SimpleQA Verified | — | 25.4% |
| Vectara Hallucination Rate | — | 10.7% |
Multimodal Not comparable
Molmo 2 8b: 30.2 (#112), Qwen3.5 Plus: —
| Benchmark | Molmo 2 8b | Qwen3.5 Plus |
|---|---|---|
| LMArena Vision | 1081 | — |
Multilingual Not comparable
Molmo 2 8b: 42.7 (#190), Qwen3.5 Plus: —
| Benchmark | Molmo 2 8b | Qwen3.5 Plus |
|---|---|---|
| LMArena Non-English | 1276 | — |
Instruction Following Not comparable
Molmo 2 8b: 67.0 (#201), Qwen3.5 Plus: —
| Benchmark | Molmo 2 8b | Qwen3.5 Plus |
|---|---|---|
| LMArena Instruction Following | 1270 | — |
Long Context Not comparable
Molmo 2 8b: —, Qwen3.5 Plus: 43.0 (#113)
| Benchmark | Molmo 2 8b | Qwen3.5 Plus |
|---|---|---|
| CL-bench | — | 19.8% |
| CL-bench Life | — | 12.4% |
Writing & Preference Not comparable
Molmo 2 8b: 49.4 (#191), Qwen3.5 Plus: —
| Benchmark | Molmo 2 8b | Qwen3.5 Plus |
|---|---|---|
| LMArena Text | 1288 | — |
Frequently asked questions
Is Molmo 2 8b better than Qwen3.5 Plus?
Qwen3.5 Plus is the stronger model overall, scoring 42.9 to 39.1 on the Noometry Index.
How many benchmarks do Molmo 2 8b and Qwen3.5 Plus share?
0 benchmarks have published results for both models. Molmo 2 8b has 5 scored results on Noometry and Qwen3.5 Plus has 15.