Model comparison
GPT-5.4 Pro vs Molmo 2 8b
GPT-5.4 Pro is the stronger model overall, scoring 58.9 to 39.1 on the Noometry Index.
Last verified . 0 shared benchmarks.
Allen Institute for AI (Ai2)Summary
- The widest gap is in reasoning, where GPT-5.4 Pro leads 70.7 to 25.6.
- Molmo 2 8b has downloadable open weights; the other is API-only.
Side by side
| GPT-5.4 Pro | Molmo 2 8b | |
|---|---|---|
| Provider | OpenAI | Allen Institute for AI (Ai2) |
| Noometry Index | 58.9 | 39.1 |
| Released | 2026-03-05 | — |
| Weights | Proprietary | Open |
| Context window | 1.05M | — |
| Max output | 128K | — |
| Input $ / M tokens | $30 | — |
| Output $ / M tokens | $180 | — |
| Results tracked | 16 | 5 |
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Category by category
Coding Not comparable
GPT-5.4 Pro: 43.2 (#90), Molmo 2 8b: —
| Benchmark | GPT-5.4 Pro | Molmo 2 8b |
|---|---|---|
| WeirdML | 57.4% | — |
Reasoning GPT-5.4 Pro leads
GPT-5.4 Pro: 70.7 (#13), Molmo 2 8b: 25.6 (#146)
| Benchmark | GPT-5.4 Pro | Molmo 2 8b |
|---|---|---|
| ARC-AGI-2 | 83.3% | — |
| SimpleBench | 74.1% | — |
| ARC-AGI-1 | 94.5% | — |
| CritPt | 30% | — |
| Chess Puzzles | 58.6% | — |
| EnigmaEval | 23.8% | — |
| LMArena Hard Prompts | — | 1287 |
| Epoch Capabilities Index | 158.93 | — |
Math Not comparable
GPT-5.4 Pro: 72.4 (#22), Molmo 2 8b: —
| Benchmark | GPT-5.4 Pro | Molmo 2 8b |
|---|---|---|
| FrontierMath (Tiers 1-3) | 82.5% | — |
| FrontierMath Tier 4 | 58.5% | — |
| FrontierMath (Feb 2025 set) | 50% | — |
| FrontierMath Tier 4 (v1) | 37.5% | — |
Knowledge Not comparable
GPT-5.4 Pro: 68.3 (#7), Molmo 2 8b: —
| Benchmark | GPT-5.4 Pro | Molmo 2 8b |
|---|---|---|
| GPQA Diamond | 94.6% | — |
| Humanity's Last Exam | 44.3% | — |
| SimpleQA Verified | 46.3% | — |
| Vectara Hallucination Rate | 8.3% | — |
Multimodal Not comparable
GPT-5.4 Pro: —, Molmo 2 8b: 30.2 (#112)
| Benchmark | GPT-5.4 Pro | Molmo 2 8b |
|---|---|---|
| LMArena Vision | — | 1081 |
Multilingual Not comparable
GPT-5.4 Pro: —, Molmo 2 8b: 42.7 (#190)
| Benchmark | GPT-5.4 Pro | Molmo 2 8b |
|---|---|---|
| LMArena Non-English | — | 1276 |
Instruction Following Not comparable
GPT-5.4 Pro: —, Molmo 2 8b: 67.0 (#201)
| Benchmark | GPT-5.4 Pro | Molmo 2 8b |
|---|---|---|
| LMArena Instruction Following | — | 1270 |
Writing & Preference Not comparable
GPT-5.4 Pro: —, Molmo 2 8b: 49.4 (#191)
| Benchmark | GPT-5.4 Pro | Molmo 2 8b |
|---|---|---|
| LMArena Text | — | 1288 |
Frequently asked questions
Is GPT-5.4 Pro better than Molmo 2 8b?
GPT-5.4 Pro is the stronger model overall, scoring 58.9 to 39.1 on the Noometry Index.
How many benchmarks do GPT-5.4 Pro and Molmo 2 8b share?
0 benchmarks have published results for both models. GPT-5.4 Pro has 16 scored results on Noometry and Molmo 2 8b has 5.