# Mellum2.1-12B-A2.5B-Thinking vs Qwen 3.6 Max (preview)

> Side-by-side benchmark comparison for Mellum2.1-12B-A2.5B-Thinking and Qwen 3.6 Max (preview) across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/mellum2-1-12b-a2-5b-thinking-vs-qwen3-6-max-preview
- Last updated: October 8, 2026

- Shared sourced benchmarks: 1
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Evidence is too thin for a benchmark verdict: Mellum2.1-12B-A2.5B-Thinking and Qwen 3.6 Max (preview) share only 1 sourced benchmark row.

## Summary

- Only 1 shared sourced benchmark row is available. That is not enough for a broad capability verdict, so this mirror does not name an overall winner.
- Qwen 3.6 Max (preview) has the larger published context window at 256K.

## Model Snapshot

| Property | Mellum2.1-12B-A2.5B-Thinking | Qwen 3.6 Max (preview) |
|----------|----------|----------|
| Creator | JetBrains | Alibaba |
| Type | Open Weight | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | 128K | 256K |
| Independent public score (not head-to-head) | null | 51.89 |
| Benchmarks Covered | 7 | 10 |
| Pricing (input/output) | $0.00 / $0.00 | N/A |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Mellum2.1-12B-A2.5B-Thinking public-lane score: Coming soon
- Qwen 3.6 Max (preview) public-lane score: Coming soon

| Benchmark | Mellum2.1-12B-A2.5B-Thinking | Qwen 3.6 Max (preview) | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 17.4% | Coming soon | Coming soon |
| Terminal-Bench 2.0 | Coming soon | 65.4% | Coming soon |
| QwenClawBench | Coming soon | 59.0% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Mellum2.1-12B-A2.5B-Thinking public-lane score: Coming soon
- Qwen 3.6 Max (preview) public-lane score: 43.1 (Supported · #56/146)

| Benchmark | Mellum2.1-12B-A2.5B-Thinking | Qwen 3.6 Max (preview) | Winner |
|-----------|-----------|-----------|--------|
| LiveCodeBench v6 | 82.0% | Coming soon | Coming soon |
| SWE-bench Verified | 47% | Coming soon | Coming soon |
| SWE-bench Pro | 28% | 57.3% | Qwen 3.6 Max (preview) |
| SciCode | Coming soon | 47% | Coming soon |
| NL2Repo | Coming soon | 42.9% | Coming soon |
| Terminal-Bench 2.0 | Coming soon | 65.4% | Coming soon |
| SWE-bench (Vals) | Coming soon | 72.8% | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- Mellum2.1-12B-A2.5B-Thinking public-lane score: Coming soon
- Qwen 3.6 Max (preview) public-lane score: Coming soon

| Benchmark | Mellum2.1-12B-A2.5B-Thinking | Qwen 3.6 Max (preview) | Winner |
|-----------|-----------|-----------|--------|
| MMLU-Redux | 87.8% | Coming soon | Coming soon |
| GPQA-D | 64.6% | Coming soon | Coming soon |
| SuperGPQA | Coming soon | 73.9% | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- Mellum2.1-12B-A2.5B-Thinking public-lane score: Coming soon
- Qwen 3.6 Max (preview) public-lane score: Coming soon

| Benchmark | Mellum2.1-12B-A2.5B-Thinking | Qwen 3.6 Max (preview) | Winner |
|-----------|-----------|-----------|--------|
| IFEval | 90.6% | Coming soon | Coming soon |

### Mathematics

- Winner: Insufficient shared evidence
- Mellum2.1-12B-A2.5B-Thinking public-lane score: Coming soon
- Qwen 3.6 Max (preview) public-lane score: 41.3 (Unranked · 2 rankable rows)

| Benchmark | Mellum2.1-12B-A2.5B-Thinking | Qwen 3.6 Max (preview) | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | Coming soon | 23.103% | Coming soon |
| FrontierMath v2 (Tier 4) | Coming soon | 4.167% | Coming soon |

## FAQ

### Is there enough evidence to pick between Mellum2.1-12B-A2.5B-Thinking and Qwen 3.6 Max (preview)?

Not yet. The models share only 1 sourced benchmark row, so this mirror reports the available measurements and metadata without naming a broad winner.

### What can I compare safely on this page?

Published pricing, context windows, model type, and individual shared benchmark rows are directly comparable. Independent overall scores and non-overlapping benchmark coverage are labeled separately and should not be read as a controlled head-to-head result.

## Related Comparisons

- [Mellum2.1-12B-A2.5B-Thinking vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-mellum2-1-12b-a2-5b-thinking)
- [Qwen 3.6 Max (preview) vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-qwen3-6-max-preview)
- [Mellum2.1-12B-A2.5B-Thinking vs GPT-6 Astra](/compare/gpt-6-astra-vs-mellum2-1-12b-a2-5b-thinking)
- [Qwen 3.6 Max (preview) vs GPT-6 Astra](/compare/gpt-6-astra-vs-qwen3-6-max-preview)

## Explore More

- [Mellum2.1-12B-A2.5B-Thinking profile](/models/mellum2-1-12b-a2-5b-thinking)
- [Qwen 3.6 Max (preview) profile](/models/qwen3-6-max-preview)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)