Model comparison
Mellum2-12B-A2.5B-Instruct vs Qwen3 235B 2507
Head-to-head evidence from 1 shared benchmark result across 1 category. Overall scores shown here use the public BenchAlign v5 ranking lane.
Public leaderboard positions: Mellum2-12B-A2.5B-Instruct unranked (Not scored); Qwen3 235B 2507 #78 (Estimated). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. Mellum2-12B-A2.5B-Instruct and Qwen3 235B 2507 share 1 comparable benchmark result. 1 of 8 categories are comparable. 4 results are unique to Mellum2-12B-A2.5B-Instruct; 3 to Qwen3 235B 2507.
Updated July 23, 2026- Shared results
- 1
- Mellum2-12B-A2.5B-Instruct only
- 4
- Qwen3 235B 2507 only
- 3
- Comparable categories
- 1 / 8
Treat this as a split decision. Mellum2-12B-A2.5B-Instruct makes more sense if its workflow fits your team better; Qwen3 235B 2507 is the better fit if knowledge is the priority.
Confidence note. This is a partial-evidence comparison with 1 shared benchmark result across 1 evidence category; 1 of 8 categories currently have scoreable aggregates for both models. Treat the verdict as directional until coverage is more balanced.
Why this result
Mellum2-12B-A2.5B-Instruct and Qwen3 235B 2507 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.
Category breakdown
Exact category averages are shown below. Not measured means BenchLM does not have enough sourced public coverage for that model and category.
| Category | Mellum2-12B-A2.5B-Instruct | Δ | Qwen3 235B 2507 |
|---|---|---|---|
| Knowledge | Mellum2-12B-A2.5B-Instruct40.9 | Margin→ 38.0 | Qwen3 235B 250778.9 |
| Multilingual | Mellum2-12B-A2.5B-InstructNot measured | MarginNo overlap | Qwen3 235B 250779.4 |
| Inst. Following | Mellum2-12B-A2.5B-Instruct75.8 | MarginNo overlap | Qwen3 235B 2507Not measured |
Decisive benchmark drivers
The largest measured benchmark gaps in this matchup, with exact reported values.
More
- Source ↗
GPQA
KnowledgeA 40.9%B 77.5%Winner: Qwen3 235B 2507Δ 36.6GPQA: Mellum2-12B-A2.5B-Instruct scored 40.9%; Qwen3 235B 2507 scored 77.5%. Qwen3 235B 2507 wins this benchmark.
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | Mellum2-12B-A2.5B-Instruct | Qwen3 235B 2507 | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | Mellum2-12B-A2.5B-InstructNot available | Qwen3 235B 2507$0 input / $0 output | A complete price comparison is not available. |
| Generation speedtokens per second | Mellum2-12B-A2.5B-InstructNot available | Qwen3 235B 2507Not available | A complete speed comparison is not available. |
| First-answer latencyseconds to first token | Mellum2-12B-A2.5B-InstructNot available | Qwen3 235B 2507Not available | A complete latency comparison is not available. |
| Context windowmaximum listed tokens | Mellum2-12B-A2.5B-Instruct128K | Qwen3 235B 2507128K | Listed context windows are equal. |
Benchmark Deep Dive
Agentic1 benchmarks
| Benchmark | Mellum2-12B-A2.5B-Instruct | Qwen3 235B 2507 | Result |
|---|---|---|---|
| BFCL v4Source | 44.2% | — | Not comparable |
KnowledgeQwen3 235B 2507 wins5 benchmarks
Multilingual1 benchmarks
| Benchmark | Mellum2-12B-A2.5B-Instruct | Qwen3 235B 2507 | Result |
|---|---|---|---|
| MMLU-ProXSource | — | 79.4% | Not comparable |
Inst. Following1 benchmarks
| Benchmark | Mellum2-12B-A2.5B-Instruct | Qwen3 235B 2507 | Result |
|---|---|---|---|
| IFEvalSource | 75.8% | — | Not comparable |
Frequently Asked Questions (2)
Which is better, Mellum2-12B-A2.5B-Instruct or Qwen3 235B 2507?
Mellum2-12B-A2.5B-Instruct and Qwen3 235B 2507 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, Mellum2-12B-A2.5B-Instruct or Qwen3 235B 2507?
Qwen3 235B 2507 has the edge for knowledge tasks in this comparison, averaging 78.9 versus 40.9. Inside this category, GPQA is the benchmark that creates the most daylight between them.
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