Model comparison
Mellum2-12B-A2.5B-Thinking vs MiniCPM5-1B
Head-to-head evidence from 4 shared benchmark results across 3 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.
Evidence parity. Mellum2-12B-A2.5B-Thinking and MiniCPM5-1B share 4 comparable benchmark results. 2 of 8 categories are comparable. 1 result is unique to Mellum2-12B-A2.5B-Thinking; 10 to MiniCPM5-1B.
Updated July 23, 2026- Shared results
- 4
- Mellum2-12B-A2.5B-Thinking only
- 1
- MiniCPM5-1B only
- 10
- Comparable categories
- 2 / 8
Treat this as a split decision. Mellum2-12B-A2.5B-Thinking makes more sense if instruction following is the priority; MiniCPM5-1B is the better fit if you need the larger 131K context window.
Confidence note. This is a partial-evidence comparison with 4 shared benchmark results across 3 evidence categories; 2 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-Thinking and MiniCPM5-1B 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.
MiniCPM5-1B gives you the larger context window at 131K, compared with 128K for Mellum2-12B-A2.5B-Thinking.
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-Thinking | Δ | MiniCPM5-1B |
|---|---|---|---|
| Inst. Following | Mellum2-12B-A2.5B-Thinking76.5 | Margin← 18.0 | MiniCPM5-1B58.5 |
| Knowledge | Mellum2-12B-A2.5B-Thinking57.6 | Margin← 13.6 | MiniCPM5-1B44.0 |
| Math | Mellum2-12B-A2.5B-ThinkingNot measured | MarginNo overlap | MiniCPM5-1B33.1 |
Decisive benchmark drivers
The largest measured benchmark gaps in this matchup, with exact reported values.
More
- Source ↗
IFEval
Inst. FollowingA 76.5%B 80.4%Winner: MiniCPM5-1BΔ 3.9IFEval: Mellum2-12B-A2.5B-Thinking scored 76.5%; MiniCPM5-1B scored 80.4%. MiniCPM5-1B 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-Thinking | MiniCPM5-1B | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | Mellum2-12B-A2.5B-ThinkingNot available | MiniCPM5-1BNot available | A complete price comparison is not available. |
| Generation speedtokens per second | Mellum2-12B-A2.5B-ThinkingNot available | MiniCPM5-1BNot available | A complete speed comparison is not available. |
| First-answer latencyseconds to first token | Mellum2-12B-A2.5B-ThinkingNot available | MiniCPM5-1BNot available | A complete latency comparison is not available. |
| Context windowmaximum listed tokens | Mellum2-12B-A2.5B-Thinking128K | MiniCPM5-1B131K | MiniCPM5-1B lists the larger context window. |
Benchmark Deep Dive
Agentic1 benchmarks
| Benchmark | Mellum2-12B-A2.5B-Thinking | MiniCPM5-1B | Result |
|---|---|---|---|
| BFCL v4Source | 45.6% | 25.1% | Mellum2-12B-A2.5B-Thinking leads |
Coding2 benchmarks
Reasoning1 benchmarks
| Benchmark | Mellum2-12B-A2.5B-Thinking | MiniCPM5-1B | Result |
|---|---|---|---|
| BBHSource | — | 71.9% | Not comparable |
KnowledgeMellum2-12B-A2.5B-Thinking wins5 benchmarks
Math4 benchmarks
Frequently Asked Questions (3)
Which is better, Mellum2-12B-A2.5B-Thinking or MiniCPM5-1B?
Mellum2-12B-A2.5B-Thinking and MiniCPM5-1B 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-Thinking or MiniCPM5-1B?
Mellum2-12B-A2.5B-Thinking has the edge for knowledge tasks in this comparison, averaging 57.6 versus 44. Inside this category, GPQA-D is the benchmark that creates the most daylight between them.
Which is better for instruction following, Mellum2-12B-A2.5B-Thinking or MiniCPM5-1B?
Mellum2-12B-A2.5B-Thinking has the edge for instruction following in this comparison, averaging 76.5 versus 58.5. Inside this category, IFEval is the benchmark that creates the most daylight between them.
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