Model comparison
Grok-2 (Dec 2024) vs Molmo 2 8b
Molmo 2 8b is the stronger model overall, scoring 39.1 to 33.7 on the Noometry Index.
Last verified . 4 shared benchmarks.
Allen Institute for AI (Ai2)Summary
- They share 4 benchmarks with published results for both. Grok-2 (Dec 2024) scores higher in 1 category and Molmo 2 8b in 3 categories; one gap is clear of the uncertainty.
- The widest gap is in reasoning, where Molmo 2 8b leads 25.6 to 16.9.
- Molmo 2 8b has downloadable open weights; the other is API-only.
Side by side
| Grok-2 (Dec 2024) | Molmo 2 8b | |
|---|---|---|
| Provider | xAI | Allen Institute for AI (Ai2) |
| Noometry Index | 33.7 | 39.1 |
| Released | 2024-08-13 | — |
| Weights | Proprietary | Open |
| Context window | — | — |
| Max output | — | — |
| Input $ / M tokens | — | — |
| Output $ / M tokens | — | — |
| Results tracked | 34 | 5 |
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Category by category
Coding Not comparable
Grok-2 (Dec 2024): 33.3 (#258), Molmo 2 8b: —
| Benchmark | Grok-2 (Dec 2024) | Molmo 2 8b |
|---|---|---|
| WeirdML | 22.2% | — |
| LiveBench Coding | 46.4% | — |
| LMArena Coding | 1287 | — |
Reasoning Molmo 2 8b leads
Grok-2 (Dec 2024): 16.9 (#299), Molmo 2 8b: 25.6 (#146)
| Benchmark | Grok-2 (Dec 2024) | Molmo 2 8b |
|---|---|---|
| LMArena Hard Prompts | 1272 | 1287 |
| SimpleBench | 22.7% | — |
| LiveBench Reasoning | 54.8% | — |
| DTBench | 65.2% | — |
| LiveBench Data Analysis | 54.5% | — |
| Epoch Capabilities Index | 130.48 | — |
| LiveBench | 54.3% | — |
Math Not comparable
Grok-2 (Dec 2024): 20.8 (#284), Molmo 2 8b: —
| Benchmark | Grok-2 (Dec 2024) | Molmo 2 8b |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 11.5% | — |
| LiveBench Math | 54.9% | — |
| LMArena Math | 1283 | — |
| MATH Level 5 | 63.5% | — |
| FrontierMath (Feb 2025 set) | 0.7% | — |
Knowledge Not comparable
Grok-2 (Dec 2024): 29.8 (#233), Molmo 2 8b: —
| Benchmark | Grok-2 (Dec 2024) | Molmo 2 8b |
|---|---|---|
| GPQA Diamond | 53.8% | — |
| Confabulations | 20.1% | — |
| LMArena Expert | 1254 | — |
Multimodal Not comparable
Grok-2 (Dec 2024): —, Molmo 2 8b: 30.2 (#112)
| Benchmark | Grok-2 (Dec 2024) | Molmo 2 8b |
|---|---|---|
| LMArena Vision | — | 1081 |
Multilingual Too close to call
Grok-2 (Dec 2024): 43.1 (#188), Molmo 2 8b: 42.7 (#190)
| Benchmark | Grok-2 (Dec 2024) | Molmo 2 8b |
|---|---|---|
| LMArena Non-English | 1282 | 1276 |
| LMArena Chinese | 1289 | — |
| LMArena French | 1318 | — |
| LMArena German | 1287 | — |
| LMArena Japanese | 1244 | — |
| LMArena Korean | 1237 | — |
| LMArena Russian | 1286 | — |
| LMArena Spanish | 1281 | — |
Instruction Following Too close to call
Grok-2 (Dec 2024): 66.9 (#202), Molmo 2 8b: 67.0 (#201)
| Benchmark | Grok-2 (Dec 2024) | Molmo 2 8b |
|---|---|---|
| LMArena Instruction Following | 1270 | 1270 |
| LiveBench Instruction Following | 69.6% | — |
Long Context Not comparable
Grok-2 (Dec 2024): 38.8 (#190), Molmo 2 8b: —
| Benchmark | Grok-2 (Dec 2024) | Molmo 2 8b |
|---|---|---|
| LMArena Longer Query | 1276 | — |
Writing & Preference Too close to call
Grok-2 (Dec 2024): 48.6 (#198), Molmo 2 8b: 49.4 (#191)
| Benchmark | Grok-2 (Dec 2024) | Molmo 2 8b |
|---|---|---|
| LMArena Text | 1305 | 1288 |
| LMArena Creative Writing | 1284 | — |
| Short-Story Creative Writing | 63.6% | — |
| LMArena Multi-Turn | 1290 | — |
| LiveBench Language | 45.6% | — |
Frequently asked questions
Is Grok-2 (Dec 2024) better than Molmo 2 8b?
Molmo 2 8b is the stronger model overall, scoring 39.1 to 33.7 on the Noometry Index.
How many benchmarks do Grok-2 (Dec 2024) and Molmo 2 8b share?
4 benchmarks have published results for both models. Grok-2 (Dec 2024) has 34 scored results on Noometry and Molmo 2 8b has 5.