Model comparison
Grok 4.20 Multi-Agent vs Molmo 2 8b
Grok 4.20 Multi-Agent is the stronger model overall, scoring 46.2 to 39.1 on the Noometry Index.
Last verified . 5 shared benchmarks.
Allen Institute for AI (Ai2)Summary
- They share 5 benchmarks with published results for both. Grok 4.20 Multi-Agent scores higher in 5 categories and Molmo 2 8b in 0 categories; 5 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Grok 4.20 Multi-Agent leads 43.9 to 25.6.
- Molmo 2 8b has downloadable open weights; the other is API-only.
Side by side
| Grok 4.20 Multi-Agent | Molmo 2 8b | |
|---|---|---|
| Provider | xAI | Allen Institute for AI (Ai2) |
| Noometry Index | 46.2 | 39.1 |
| Released | 2026-03-09 | — |
| Weights | Proprietary | Open |
| Context window | 1M | — |
| Max output | 30K | — |
| Input $ / M tokens | $1.25 | — |
| Output $ / M tokens | $2.50 | — |
| Results tracked | 20 | 5 |
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Category by category
Coding Not comparable
Grok 4.20 Multi-Agent: 43.0 (#92), Molmo 2 8b: —
| Benchmark | Grok 4.20 Multi-Agent | Molmo 2 8b |
|---|---|---|
| LMArena Coding | 1457 | — |
Agentic & Tool Use Not comparable
Grok 4.20 Multi-Agent: —, Molmo 2 8b: —
| Benchmark | Grok 4.20 Multi-Agent | Molmo 2 8b |
|---|---|---|
| LMArena Search | 1204 | — |
Reasoning Grok 4.20 Multi-Agent leads
Grok 4.20 Multi-Agent: 43.9 (#48), Molmo 2 8b: 25.6 (#146)
| Benchmark | Grok 4.20 Multi-Agent | Molmo 2 8b |
|---|---|---|
| LMArena Hard Prompts | 1448 | 1287 |
| NYT Connections (extended) | 89.6% | — |
Math Not comparable
Grok 4.20 Multi-Agent: 39.4 (#104), Molmo 2 8b: —
| Benchmark | Grok 4.20 Multi-Agent | Molmo 2 8b |
|---|---|---|
| LMArena Math | 1442 | — |
Knowledge Not comparable
Grok 4.20 Multi-Agent: 40.4 (#119), Molmo 2 8b: —
| Benchmark | Grok 4.20 Multi-Agent | Molmo 2 8b |
|---|---|---|
| LMArena Expert | 1445 | — |
Multimodal Grok 4.20 Multi-Agent leads
Grok 4.20 Multi-Agent: 40.5 (#48), Molmo 2 8b: 30.2 (#112)
| Benchmark | Grok 4.20 Multi-Agent | Molmo 2 8b |
|---|---|---|
| LMArena Vision | 1259 | 1081 |
Multilingual Grok 4.20 Multi-Agent leads
Grok 4.20 Multi-Agent: 54.4 (#43), Molmo 2 8b: 42.7 (#190)
| Benchmark | Grok 4.20 Multi-Agent | Molmo 2 8b |
|---|---|---|
| LMArena Non-English | 1440 | 1276 |
| LMArena Chinese | 1475 | — |
| LMArena French | 1466 | — |
| LMArena German | 1456 | — |
| LMArena Japanese | 1405 | — |
| LMArena Korean | 1416 | — |
| LMArena Russian | 1457 | — |
| LMArena Spanish | 1447 | — |
Instruction Following Grok 4.20 Multi-Agent leads
Grok 4.20 Multi-Agent: 74.8 (#84), Molmo 2 8b: 67.0 (#201)
| Benchmark | Grok 4.20 Multi-Agent | Molmo 2 8b |
|---|---|---|
| LMArena Instruction Following | 1420 | 1270 |
Long Context Not comparable
Grok 4.20 Multi-Agent: 43.7 (#88), Molmo 2 8b: —
| Benchmark | Grok 4.20 Multi-Agent | Molmo 2 8b |
|---|---|---|
| LMArena Longer Query | 1431 | — |
Writing & Preference Grok 4.20 Multi-Agent leads
Grok 4.20 Multi-Agent: 64.0 (#59), Molmo 2 8b: 49.4 (#191)
| Benchmark | Grok 4.20 Multi-Agent | Molmo 2 8b |
|---|---|---|
| LMArena Text | 1450 | 1288 |
| LMArena Creative Writing | 1436 | — |
| LMArena Multi-Turn | 1452 | — |
Frequently asked questions
Is Grok 4.20 Multi-Agent better than Molmo 2 8b?
Grok 4.20 Multi-Agent is the stronger model overall, scoring 46.2 to 39.1 on the Noometry Index.
How many benchmarks do Grok 4.20 Multi-Agent and Molmo 2 8b share?
5 benchmarks have published results for both models. Grok 4.20 Multi-Agent has 20 scored results on Noometry and Molmo 2 8b has 5.