# Qwen3.6 Plus vs Spark-X2.6-4B

> Side-by-side benchmark comparison for Qwen3.6 Plus and Spark-X2.6-4B across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/qwen3-6-plus-vs-spark-x2-6-4b
- Last updated: October 20, 2026

- Shared sourced benchmarks: 12
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Qwen3.6 Plus leads by point estimate. Conditional score ranges do not establish rank confidence. Choose using the category evidence and your own workload tests.

## Summary

- Qwen3.6 Plus has the higher overall point estimate 53.75 to 40.14. Conditional score ranges do not establish rank confidence.
- The clearest category separation is in reasoning, where the averages are 73.9 for Qwen3.6 Plus and 48.8 for Spark-X2.6-4B.
- The biggest single benchmark swing is τ³-bench results in Agentic, with scores of 70.7% and 34.7%.
- Spark-X2.6-4B is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.

## Model Snapshot

| Property | Qwen3.6 Plus | Spark-X2.6-4B |
|----------|----------|----------|
| Creator | Alibaba | SparkLLM |
| Type | Proprietary | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 1M |
| Overall Score | 53.75 | 40.14 |
| Benchmarks Covered | 49 | 20 |
| Pricing (input/output) | Pricing unavailable / Pricing unavailable | $0.00 / $0.00 |

## Category Breakdown

### Agentic

- Winner: Directional only
- Qwen3.6 Plus public-lane score: 34.4 (Supported · #85/131)
- Spark-X2.6-4B public-lane score: 33 (Estimated · #89/131)

| Benchmark | Qwen3.6 Plus | Spark-X2.6-4B | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | 61.6% | Coming soon | Coming soon |
| Claw-Eval | 58.8% | 69.9% | Spark-X2.6-4B |
| QwenClawBench | 57.2% | Coming soon | Coming soon |
| τ³-bench results | 70.7% | 34.7% | Qwen3.6 Plus |
| VITA-Bench | 44.3% | Coming soon | Coming soon |
| DeepPlanning | 41.5% | Coming soon | Coming soon |
| Toolathlon | 39.8% | Coming soon | Coming soon |
| MCP Atlas | 48.2% | 62.4% | Spark-X2.6-4B |
| MCP-Tasks | 74.1% | Coming soon | Coming soon |
| WideResearch | 74.3% | Coming soon | Coming soon |
| Gert Labs | 50.60% | Coming soon | Coming soon |
| ResearchClawBench | 18.0% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 53.2% | Coming soon | Coming soon |
| BFCL v4 | Coming soon | 71.8% | Coming soon |
| τ²-bench results | Coming soon | 86.9% | Coming soon |
| BrowseComp | Coming soon | 53.1% | Coming soon |
| HLE w/ tools | Coming soon | 36.9% | Coming soon |

### Coding

- Winner: Directional only
- Qwen3.6 Plus public-lane score: 40 (Supported · #67/152)
- Spark-X2.6-4B public-lane score: 30.6 (Estimated · #95/152)

| Benchmark | Qwen3.6 Plus | Spark-X2.6-4B | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | 78.8% | 62.8% | Qwen3.6 Plus |
| SWE-bench Pro | 56.6% | 54.3% | Qwen3.6 Plus |
| SWE Multilingual | 73.8% | 64.7% | Qwen3.6 Plus |
| LiveCodeBench v6 | 87.1% | Coming soon | Coming soon |
| NL2Repo | 37.9% | Coming soon | Coming soon |
| Terminal-Bench 2.0 | 61.6% | Coming soon | Coming soon |
| Vibe Code Bench | 25.56% | Coming soon | Coming soon |
| LiveCodeBench (Vals) | 86.0% | Coming soon | Coming soon |
| SWE-bench (Vals) | 73.4% | Coming soon | Coming soon |
| SciCode | Coming soon | 36.8% | Coming soon |

### Reasoning

- Winner: Not comparable
- Qwen3.6 Plus public-lane score: 73.9 (Unranked · 4 rankable rows)
- Spark-X2.6-4B public-lane score: 48.8 (Unranked · 2 rankable rows)

| Benchmark | Qwen3.6 Plus | Spark-X2.6-4B | Winner |
|-----------|-----------|-----------|--------|
| AI-Needle | 68.3% | Coming soon | Coming soon |
| LongBench v2 | 62% | 53.3% | Qwen3.6 Plus |

### Multimodal & Grounded

- Winner: Not comparable
- Qwen3.6 Plus public-lane score: 76.1 (#21/55)
- Spark-X2.6-4B public-lane score: Coming soon

| Benchmark | Qwen3.6 Plus | Spark-X2.6-4B | Winner |
|-----------|-----------|-----------|--------|
| MMMU | 86.0% | Coming soon | Coming soon |
| MMMU-Pro | 78.8% | Coming soon | Coming soon |
| MathVision | 88.0% | Coming soon | Coming soon |
| VideoMMMU | 84.0% | Coming soon | Coming soon |
| ScreenSpot Pro | 68.2% | Coming soon | Coming soon |
| CharXiv | 81.5% | Coming soon | Coming soon |
| V* | 96.9% | Coming soon | Coming soon |

### Knowledge

- Winner: Directional only
- Qwen3.6 Plus public-lane score: 53.4 (Supported · #68/187)
- Spark-X2.6-4B public-lane score: 43 (Estimated · #109/187)

| Benchmark | Qwen3.6 Plus | Spark-X2.6-4B | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 90.4% | 69.9% | Qwen3.6 Plus |
| SuperGPQA | 71.6% | Coming soon | Coming soon |
| MMLU-Pro | 88.5% | Coming soon | Coming soon |
| MMLU-Redux | 94.5% | Coming soon | Coming soon |
| C-Eval | 93.3% | Coming soon | Coming soon |
| HLE | 28.8% | Coming soon | Coming soon |
| GPQA Diamond (Vals) | 87.4% | Coming soon | Coming soon |
| MMLU-Pro (Vals) | 87.7% | Coming soon | Coming soon |
| GPQA-D | Coming soon | 77.1% | Coming soon |
| HLE w/o tools | Coming soon | 17.9% | Coming soon |

### Multilingual

- Winner: Not comparable
- Qwen3.6 Plus public-lane score: 93.8 (#4/17)
- Spark-X2.6-4B public-lane score: Coming soon

| Benchmark | Qwen3.6 Plus | Spark-X2.6-4B | Winner |
|-----------|-----------|-----------|--------|
| MMLU-ProX | 84.7% | Coming soon | Coming soon |
| NOVA-63 | 57.9% | Coming soon | Coming soon |

### Instruction Following

- Winner: Qwen3.6 Plus
- Qwen3.6 Plus public-lane score: 85.8 (#47/149)
- Spark-X2.6-4B public-lane score: 78.2 (#62/149)

| Benchmark | Qwen3.6 Plus | Spark-X2.6-4B | Winner |
|-----------|-----------|-----------|--------|
| IFEval | 94.3% | 93.6% | Qwen3.6 Plus |
| IFBench | 75.8% | 75.8% | Tie |

### Mathematics

- Winner: Not comparable
- Qwen3.6 Plus public-lane score: 69.5 (#6/12)
- Spark-X2.6-4B public-lane score: 76.4 (Unranked · 3 rankable rows)

| Benchmark | Qwen3.6 Plus | Spark-X2.6-4B | Winner |
|-----------|-----------|-----------|--------|
| AIME26 | 95.3% | 91.2% | Qwen3.6 Plus |
| HMMT Feb 2025 | 96.7% | Coming soon | Coming soon |
| HMMT Nov 2025 | 94.6% | Coming soon | Coming soon |
| HMMT Feb 2026 | 87.8% | 81.3% | Qwen3.6 Plus |
| MMAnswerBench | 83.8% | Coming soon | Coming soon |
| FrontierMath v2 (Tiers 1-3) | 38.246% | Coming soon | Coming soon |
| IMOAnswerBench | Coming soon | 75.2% | Coming soon |

## FAQ

### Which is better overall, Qwen3.6 Plus or Spark-X2.6-4B?

Qwen3.6 Plus has the higher overall point estimate. Conditional score ranges do not establish rank confidence.

### Where is the biggest gap between Qwen3.6 Plus and Spark-X2.6-4B?

The widest category gap is in reasoning, where the averages are 73.9 for Qwen3.6 Plus and 48.8 for Spark-X2.6-4B.

### How many benchmarks does Qwen3.6 Plus cover on BenchLM?

Qwen3.6 Plus currently has 49 sourced benchmark scores on BenchLM.

### How many benchmarks does Spark-X2.6-4B cover on BenchLM?

Spark-X2.6-4B currently has 20 sourced benchmark scores on BenchLM.

## Related Comparisons

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- [Spark-X2.6-4B vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-spark-x2-6-4b)
- [Qwen3.6 Plus vs GPT-6.1 Sol](/compare/gpt-6-1-sol-vs-qwen3-6-plus)
- [Spark-X2.6-4B vs GPT-6.1 Sol](/compare/gpt-6-1-sol-vs-spark-x2-6-4b)

## Explore More

- [Qwen3.6 Plus profile](/models/qwen3-6-plus)
- [Spark-X2.6-4B profile](/models/spark-x2-6-4b)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)