# Ling 3.1 Flash vs Spark-X2.6-4B

> Side-by-side benchmark comparison for Ling 3.1 Flash and Spark-X2.6-4B across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/ling-3-1-flash-vs-spark-x2-6-4b
- Last updated: October 20, 2026

- Shared sourced benchmarks: 5
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Ling 3.1 Flash leads by point estimate. Conditional score ranges do not establish rank confidence. Choose using the category evidence and your own workload tests.

## Summary

- Ling 3.1 Flash has the higher overall point estimate 68.08 to 40.14. Conditional score ranges do not establish rank confidence.
- The clearest category separation is in reasoning, where the averages are 82 for Ling 3.1 Flash and 48.8 for Spark-X2.6-4B.
- The biggest single benchmark swing is BrowseComp in Agentic, with scores of 91.7% and 53.1%.
- Spark-X2.6-4B is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- Spark-X2.6-4B also has the larger context window at 1M.

## Model Snapshot

| Property | Ling 3.1 Flash | Spark-X2.6-4B |
|----------|----------|----------|
| Creator | InclusionAI | SparkLLM |
| Type | Open Weight | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 262K | 1M |
| Overall Score | 68.08 | 40.14 |
| Benchmarks Covered | 17 | 20 |
| Pricing (input/output) | Pricing unavailable / Pricing unavailable | $0.00 / $0.00 |

## Category Breakdown

### Agentic

- Winner: Directional only
- Ling 3.1 Flash public-lane score: 62.8 (Estimated · #22/131)
- Spark-X2.6-4B public-lane score: 33 (Estimated · #89/131)

| Benchmark | Ling 3.1 Flash | Spark-X2.6-4B | Winner |
|-----------|-----------|-----------|--------|
| skillsBench | 68.7% | Coming soon | Coming soon |
| AutomationBench | 52.5% | Coming soon | Coming soon |
| CyberGym | 87.9% | Coming soon | Coming soon |
| Finance Agent v2 | 57.9% | Coming soon | Coming soon |
| DRACO | 85.5% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | 81.2% | Coming soon | Coming soon |
| τ³-bench results | 47.8% | 34.7% | Ling 3.1 Flash |
| MCP Atlas | 83% | 62.4% | Ling 3.1 Flash |
| BrowseComp | 91.7% | 53.1% | Ling 3.1 Flash |
| WideResearch | 83.3% | Coming soon | Coming soon |
| BFCL v4 | Coming soon | 71.8% | Coming soon |
| τ²-bench results | Coming soon | 86.9% | Coming soon |
| HLE w/ tools | Coming soon | 36.9% | Coming soon |
| Claw-Eval | Coming soon | 69.9% | Coming soon |

### Coding

- Winner: Directional only
- Ling 3.1 Flash public-lane score: 57.2 (Estimated · #27/152)
- Spark-X2.6-4B public-lane score: 30.6 (Estimated · #95/152)

| Benchmark | Ling 3.1 Flash | Spark-X2.6-4B | Winner |
|-----------|-----------|-----------|--------|
| terminalBench4 | 46.0% | Coming soon | Coming soon |
| SWE-Atlas Codebase QnA | 64.5% | Coming soon | Coming soon |
| SWE Multilingual | 88.5% | 64.7% | Ling 3.1 Flash |
| SWE-bench Pro | 68.7% | 54.3% | Ling 3.1 Flash |
| DeepSWE | 59.7% | Coming soon | Coming soon |
| SWE-bench Verified | Coming soon | 62.8% | Coming soon |
| SciCode | Coming soon | 36.8% | Coming soon |

### Reasoning

- Winner: Not comparable
- Ling 3.1 Flash public-lane score: 82 (Unranked · 2 rankable rows)
- Spark-X2.6-4B public-lane score: 48.8 (Unranked · 2 rankable rows)

| Benchmark | Ling 3.1 Flash | Spark-X2.6-4B | Winner |
|-----------|-----------|-----------|--------|
| LongBench v2 | Coming soon | 53.3% | Coming soon |

### Knowledge

- Winner: Directional only
- Ling 3.1 Flash public-lane score: 63.4 (Supported · #43/187)
- Spark-X2.6-4B public-lane score: 43 (Estimated · #109/187)

| Benchmark | Ling 3.1 Flash | Spark-X2.6-4B | Winner |
|-----------|-----------|-----------|--------|
| HealthBench Professional | 65.3% | Coming soon | Coming soon |
| HLE | 37.4% | Coming soon | Coming soon |
| GPQA-D | Coming soon | 77.1% | Coming soon |
| HLE w/o tools | Coming soon | 17.9% | Coming soon |
| GPQA | Coming soon | 69.9% | Coming soon |

### Instruction Following

- Winner: Not comparable
- Ling 3.1 Flash public-lane score: Coming soon
- Spark-X2.6-4B public-lane score: 78.2 (#62/149)

| Benchmark | Ling 3.1 Flash | Spark-X2.6-4B | Winner |
|-----------|-----------|-----------|--------|
| IFEval | Coming soon | 93.6% | Coming soon |
| IFBench | Coming soon | 75.8% | Coming soon |

### Mathematics

- Winner: Not comparable
- Ling 3.1 Flash public-lane score: Coming soon
- Spark-X2.6-4B public-lane score: 76.4 (Unranked · 3 rankable rows)

| Benchmark | Ling 3.1 Flash | Spark-X2.6-4B | Winner |
|-----------|-----------|-----------|--------|
| AIME26 | Coming soon | 91.2% | Coming soon |
| HMMT Feb 2026 | Coming soon | 81.3% | Coming soon |
| IMOAnswerBench | Coming soon | 75.2% | Coming soon |

## FAQ

### Which is better overall, Ling 3.1 Flash or Spark-X2.6-4B?

Ling 3.1 Flash has the higher overall point estimate. Conditional score ranges do not establish rank confidence.

### Where is the biggest gap between Ling 3.1 Flash and Spark-X2.6-4B?

The widest category gap is in reasoning, where the averages are 82 for Ling 3.1 Flash and 48.8 for Spark-X2.6-4B.

### How many benchmarks does Ling 3.1 Flash cover on BenchLM?

Ling 3.1 Flash currently has 17 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

- [Ling 3.1 Flash vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-ling-3-1-flash)
- [Spark-X2.6-4B vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-spark-x2-6-4b)
- [Ling 3.1 Flash vs GPT-6.1 Sol](/compare/gpt-6-1-sol-vs-ling-3-1-flash)
- [Spark-X2.6-4B vs GPT-6.1 Sol](/compare/gpt-6-1-sol-vs-spark-x2-6-4b)

## Explore More

- [Ling 3.1 Flash profile](/models/ling-3-1-flash)
- [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)