Model comparison
Exaone 4.0 32B vs Mellum2-12B-A2.5B-Instruct
Head-to-head evidence from 0 shared benchmark results across 0 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.
Public leaderboard positions: Exaone 4.0 32B #170 (Estimated); Mellum2-12B-A2.5B-Instruct unranked (Not scored). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. Exaone 4.0 32B and Mellum2-12B-A2.5B-Instruct share 0 comparable benchmark results. 1 of 8 categories are comparable. 13 results are unique to Exaone 4.0 32B; 5 to Mellum2-12B-A2.5B-Instruct.
Updated July 23, 2026- Shared results
- 0
- Exaone 4.0 32B only
- 13
- Mellum2-12B-A2.5B-Instruct only
- 5
- Comparable categories
- 1 / 8
Treat this as a split decision. Exaone 4.0 32B makes more sense if knowledge is the priority or you want the stronger reasoning-first profile; Mellum2-12B-A2.5B-Instruct is the better fit if you would rather avoid the extra latency and token burn of a reasoning model.
Confidence note. This is a partial-evidence comparison with 0 shared benchmark results across 0 evidence categories; 1 of 8 categories currently have scoreable aggregates for both models. Treat the verdict as directional until coverage is more balanced.
Why this result
Exaone 4.0 32B and Mellum2-12B-A2.5B-Instruct finish on the same BenchAlign overall score, so this is less about a single winner and more about where the edge shows up. The BenchAlign headline says tie; the benchmark table is where the real choice happens.
Exaone 4.0 32B is the reasoning model in the pair, while Mellum2-12B-A2.5B-Instruct is not. That usually helps on harder chain-of-thought-heavy tests, but it can also mean more latency and more token spend in real use.
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | Exaone 4.0 32B | Mellum2-12B-A2.5B-Instruct | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | Exaone 4.0 32BNot available | Mellum2-12B-A2.5B-InstructNot available | A complete price comparison is not available. |
| Generation speedtokens per second | Exaone 4.0 32BNot available | Mellum2-12B-A2.5B-InstructNot available | A complete speed comparison is not available. |
| First-answer latencyseconds to first token | Exaone 4.0 32BNot available | Mellum2-12B-A2.5B-InstructNot available | A complete latency comparison is not available. |
| Context windowmaximum listed tokens | Exaone 4.0 32B128K | Mellum2-12B-A2.5B-Instruct128K | Listed context windows are equal. |
Benchmark Deep Dive
Agentic2 benchmarks
Coding1 benchmarks
| Benchmark | Exaone 4.0 32B | Mellum2-12B-A2.5B-Instruct | Result |
|---|---|---|---|
| AA-SciCodeSource | 25.2% | — | Not comparable |
Reasoning2 benchmarks
KnowledgeExaone 4.0 32B wins10 benchmarks
| Benchmark | Exaone 4.0 32B | Mellum2-12B-A2.5B-Instruct | Result |
|---|---|---|---|
| MMLU-ProSource | 81.8% | — | Not comparable |
| Artificial Analysis Intelligence IndexSource | 6.0% | — | Not comparable |
| AA-GPQA DiamondSource | 62.8% | — | Not comparable |
| AA-HLESource | 4.9% | — | Not comparable |
| AA-Omniscience IndexSource | -62.3% | — | Not comparable |
| AA-Omniscience AccuracySource | 10.4% | — | Not comparable |
| AA-Omniscience Hallucination RateSource | 81.0% | — | Not comparable |
| MMLU-ReduxSource | — | 78.1% | Not comparable |
| GPQASource | — | 40.9% | Not comparable |
| GPQA-DSource | — | 40.9% | Not comparable |
Math1 benchmarks
| Benchmark | Exaone 4.0 32B | Mellum2-12B-A2.5B-Instruct | Result |
|---|---|---|---|
| AIME 2025Source | 85.3% | — | Not comparable |
Frequently Asked Questions (2)
Which is better, Exaone 4.0 32B or Mellum2-12B-A2.5B-Instruct?
Exaone 4.0 32B and Mellum2-12B-A2.5B-Instruct are tied on the BenchAlign overall score, so the right pick depends on which category matters most for your use case.
Which is better for knowledge tasks, Exaone 4.0 32B or Mellum2-12B-A2.5B-Instruct?
Exaone 4.0 32B has the edge for knowledge tasks in this comparison, averaging 81.8 versus 40.9. Mellum2-12B-A2.5B-Instruct stays close enough that the answer can still flip depending on your workload.
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