Model comparison
Molmo 2 8b vs Step 2 16k Exp 202412
Molmo 2 8b and Step 2 16k Exp 202412 score almost the same on the Noometry Index (39.1 vs 39.2), so choose on price, context window or the category you care about most.
Last verified . 4 shared benchmarks.
Allen Institute for AI (Ai2)
StepFunSummary
- They share 4 benchmarks with published results for both. Molmo 2 8b scores higher in 0 categories and Step 2 16k Exp 202412 in 4 categories; 2 gaps are clear of the uncertainty.
- Molmo 2 8b has downloadable open weights; the other is API-only.
Side by side
| Molmo 2 8b | Step 2 16k Exp 202412 | |
|---|---|---|
| Provider | Allen Institute for AI (Ai2) | StepFun |
| Noometry Index | 39.1 | 39.2 |
| Released | — | — |
| Weights | Open | Proprietary |
| Context window | — | — |
| Max output | — | — |
| Input $ / M tokens | — | — |
| Output $ / M tokens | — | — |
| Results tracked | 5 | 12 |
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Category by category
Coding Not comparable
Molmo 2 8b: —, Step 2 16k Exp 202412: 38.5 (#174)
| Benchmark | Molmo 2 8b | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Coding | — | 1316 |
Reasoning Too close to call
Molmo 2 8b: 25.6 (#146), Step 2 16k Exp 202412: 25.9 (#142)
| Benchmark | Molmo 2 8b | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Hard Prompts | 1287 | 1299 |
Math Not comparable
Molmo 2 8b: —, Step 2 16k Exp 202412: 36.3 (#169)
| Benchmark | Molmo 2 8b | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Math | — | 1304 |
Knowledge Not comparable
Molmo 2 8b: —, Step 2 16k Exp 202412: 35.2 (#187)
| Benchmark | Molmo 2 8b | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Expert | — | 1279 |
Multimodal Not comparable
Molmo 2 8b: 30.2 (#112), Step 2 16k Exp 202412: —
| Benchmark | Molmo 2 8b | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Vision | 1081 | — |
Multilingual Step 2 16k Exp 202412 leads
Molmo 2 8b: 42.7 (#190), Step 2 16k Exp 202412: 43.7 (#181)
| Benchmark | Molmo 2 8b | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Non-English | 1276 | 1290 |
| LMArena Chinese | — | 1331 |
| LMArena Russian | — | 1324 |
Instruction Following Too close to call
Molmo 2 8b: 67.0 (#201), Step 2 16k Exp 202412: 67.9 (#192)
| Benchmark | Molmo 2 8b | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Instruction Following | 1270 | 1287 |
Long Context Not comparable
Molmo 2 8b: —, Step 2 16k Exp 202412: 39.7 (#170)
| Benchmark | Molmo 2 8b | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Longer Query | — | 1307 |
Writing & Preference Step 2 16k Exp 202412 leads
Molmo 2 8b: 49.4 (#191), Step 2 16k Exp 202412: 52.3 (#173)
| Benchmark | Molmo 2 8b | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Text | 1288 | 1321 |
| LMArena Creative Writing | — | 1328 |
| LMArena Multi-Turn | — | 1292 |
Frequently asked questions
Is Molmo 2 8b better than Step 2 16k Exp 202412?
Molmo 2 8b and Step 2 16k Exp 202412 score almost the same on the Noometry Index (39.1 vs 39.2), so choose on price, context window or the category you care about most.
How many benchmarks do Molmo 2 8b and Step 2 16k Exp 202412 share?
4 benchmarks have published results for both models. Molmo 2 8b has 5 scored results on Noometry and Step 2 16k Exp 202412 has 12.