# Mellum2-12B-A2.5B-Instruct vs MiMo-V2.5

> Side-by-side benchmark comparison for Mellum2-12B-A2.5B-Instruct and MiMo-V2.5 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/mellum2-12b-a2-5b-instruct-vs-mimo-v2-5
- Last updated: September 4, 2026

- Shared sourced benchmarks: 0
- HTML indexing: indexable
- Ranking lane: BenchAlign v5

## Quick Verdict

No benchmark verdict yet: there is no shared sourced benchmark row for Mellum2-12B-A2.5B-Instruct and MiMo-V2.5.

## Summary

- Mellum2-12B-A2.5B-Instruct and MiMo-V2.5 do not currently share a sourced benchmark row. The mirror therefore compares metadata, pricing, context windows, and each model's separately reported coverage without naming a benchmark winner.

## Model Snapshot

| Property | Mellum2-12B-A2.5B-Instruct | MiMo-V2.5 |
|----------|----------|----------|
| Creator | JetBrains | Xiaomi |
| Type | Open Weight | Proprietary |
| Reasoning | Non-Reasoning | Reasoning |
| Context | 128K | 1M |
| Independent public score (not head-to-head) | null | 60.72 |
| Benchmarks Covered | 6 | 15 |
| Pricing (input/output) | N/A | Pricing unavailable / Pricing unavailable |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Mellum2-12B-A2.5B-Instruct public-lane score: 47.8 (Estimated · #82/151)
- MiMo-V2.5 public-lane score: 51.1 (Estimated · #58/151)

| Benchmark | Mellum2-12B-A2.5B-Instruct | MiMo-V2.5 | Winner |
|-----------|-----------|-----------|--------|
| BFCL v4 | 44.2% | Coming soon | Coming soon |
| Claw-Eval | Coming soon | 62.3% | Coming soon |
| MM-ClawBench | Coming soon | 23.8% | Coming soon |
| Terminal-Bench 2.0 | Coming soon | 65.8% | Coming soon |
| Gert Labs | Coming soon | 46.89% | Coming soon |
| ResearchClawBench | Coming soon | 16.9% | Coming soon |
| Terminal-Bench 2.1 (Vals) | Coming soon | 60.7% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Mellum2-12B-A2.5B-Instruct public-lane score: Coming soon
- MiMo-V2.5 public-lane score: 54.8 (Estimated · #45/183)

| Benchmark | Mellum2-12B-A2.5B-Instruct | MiMo-V2.5 | Winner |
|-----------|-----------|-----------|--------|
| LiveCodeBench v6 | 37.2% | Coming soon | Coming soon |
| SWE-bench Pro | Coming soon | 56.1% | Coming soon |
| Terminal-Bench 2.0 | Coming soon | 65.8% | Coming soon |
| LiveCodeBench (Vals) | Coming soon | 81.5% | Coming soon |
| SWE-bench (Vals) | Coming soon | 71.0% | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- Mellum2-12B-A2.5B-Instruct public-lane score: Coming soon
- MiMo-V2.5 public-lane score: 59.2 (#29/48)

| Benchmark | Mellum2-12B-A2.5B-Instruct | MiMo-V2.5 | Winner |
|-----------|-----------|-----------|--------|
| Video-MME (with subtitle) | Coming soon | 87.7% | Coming soon |
| CharXiv | Coming soon | 81% | Coming soon |
| MMMU-Pro | Coming soon | 77.9% | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- Mellum2-12B-A2.5B-Instruct public-lane score: 48.1 (Estimated · #103/181)
- MiMo-V2.5 public-lane score: 53.9 (Estimated · #64/181)

| Benchmark | Mellum2-12B-A2.5B-Instruct | MiMo-V2.5 | Winner |
|-----------|-----------|-----------|--------|
| MMLU-Redux | 78.1% | Coming soon | Coming soon |
| GPQA | 40.9% | Coming soon | Coming soon |
| GPQA-D | 40.9% | Coming soon | Coming soon |
| GPQA Diamond (Vals) | Coming soon | 81.6% | Coming soon |
| MMLU-Pro (Vals) | Coming soon | 82.9% | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- Mellum2-12B-A2.5B-Instruct public-lane score: Coming soon
- MiMo-V2.5 public-lane score: Coming soon

| Benchmark | Mellum2-12B-A2.5B-Instruct | MiMo-V2.5 | Winner |
|-----------|-----------|-----------|--------|
| IFEval | 75.8% | Coming soon | Coming soon |

## FAQ

### Can I compare Mellum2-12B-A2.5B-Instruct and MiMo-V2.5 on BenchLM yet?

Not fully yet. BenchLM is tracking both models, but sourced benchmark coverage is still incomplete for a fair score-level comparison.

### Why does this page show "coming soon" values?

BenchLM only calls winners when public benchmark coverage is available on both sides of the comparison.

## Related Comparisons

- [Mellum2-12B-A2.5B-Instruct vs Mellum2-12B-A2.5B-Thinking](/compare/mellum2-12b-a2-5b-instruct-vs-mellum2-12b-a2-5b-thinking)
- [MiMo-V2.5 vs Mellum2-12B-A2.5B-Thinking](/compare/mellum2-12b-a2-5b-thinking-vs-mimo-v2-5)
- [Mellum2-12B-A2.5B-Instruct vs MiMo-V2.5-Pro](/compare/mellum2-12b-a2-5b-instruct-vs-mimo-v2-5-pro)
- [MiMo-V2.5 vs MiMo-V2.5-Pro](/compare/mimo-v2-5-vs-mimo-v2-5-pro)

## Explore More

- [Mellum2-12B-A2.5B-Instruct profile](/models/mellum2-12b-a2-5b-instruct)
- [MiMo-V2.5 profile](/models/mimo-v2-5)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)