# Spark-X2.6-4B vs ZAYA1-8B

> Side-by-side benchmark comparison for Spark-X2.6-4B and ZAYA1-8B across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/spark-x2-6-4b-vs-zaya1-8b
- Last updated: October 20, 2026

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

## Quick Verdict

Spark-X2.6-4B leads by point estimate. Conditional score ranges do not establish rank confidence. Choose using the category evidence and your own workload tests.

## Summary

- Spark-X2.6-4B has the higher overall point estimate 40.14 to 34.12. Conditional score ranges do not establish rank confidence.
- The clearest category separation is in instruction following, where the averages are 78.2 for Spark-X2.6-4B and 23.6 for ZAYA1-8B.
- The biggest single benchmark swing is BFCL v4 in Agentic, with scores of 71.8% and 39.2%.
- Spark-X2.6-4B also has the larger context window at 1M.

## Model Snapshot

| Property | Spark-X2.6-4B | ZAYA1-8B |
|----------|----------|----------|
| Creator | SparkLLM | Zyphra |
| Type | Open Weight | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 131K |
| Overall Score | 40.14 | 34.12 |
| Benchmarks Covered | 20 | 11 |
| Pricing (input/output) | $0.00 / $0.00 | $0.00 / $0.00 |

## Category Breakdown

### Agentic

- Winner: Not comparable
- Spark-X2.6-4B public-lane score: 33 (Estimated · #89/131)
- ZAYA1-8B public-lane score: Coming soon

| Benchmark | Spark-X2.6-4B | ZAYA1-8B | Winner |
|-----------|-----------|-----------|--------|
| BFCL v4 | 71.8% | 39.2% | Spark-X2.6-4B |
| τ²-bench results | 86.9% | Coming soon | Coming soon |
| MCP Atlas | 62.4% | Coming soon | Coming soon |
| BrowseComp | 53.1% | Coming soon | Coming soon |
| HLE w/ tools | 36.9% | Coming soon | Coming soon |
| τ³-bench results | 34.7% | Coming soon | Coming soon |
| Claw-Eval | 69.9% | Coming soon | Coming soon |

### Coding

- Winner: Not comparable
- Spark-X2.6-4B public-lane score: 30.6 (Estimated · #95/152)
- ZAYA1-8B public-lane score: Coming soon

| Benchmark | Spark-X2.6-4B | ZAYA1-8B | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Pro | 54.3% | Coming soon | Coming soon |
| SWE-bench Verified | 62.8% | Coming soon | Coming soon |
| SWE Multilingual | 64.7% | Coming soon | Coming soon |
| SciCode | 36.8% | Coming soon | Coming soon |
| LiveCodeBench v6 | Coming soon | 65.8% | Coming soon |

### Reasoning

- Winner: Not comparable
- Spark-X2.6-4B public-lane score: 48.8 (Unranked · 2 rankable rows)
- ZAYA1-8B public-lane score: Coming soon

| Benchmark | Spark-X2.6-4B | ZAYA1-8B | Winner |
|-----------|-----------|-----------|--------|
| LongBench v2 | 53.3% | Coming soon | Coming soon |

### Knowledge

- Winner: Directional only
- Spark-X2.6-4B public-lane score: 43 (Estimated · #109/187)
- ZAYA1-8B public-lane score: 37.5 (Estimated · #129/187)

| Benchmark | Spark-X2.6-4B | ZAYA1-8B | Winner |
|-----------|-----------|-----------|--------|
| GPQA-D | 77.1% | 71.0% | Spark-X2.6-4B |
| HLE w/o tools | 17.9% | Coming soon | Coming soon |
| GPQA | 69.9% | 71% | ZAYA1-8B |
| MMLU-Pro | Coming soon | 74.2% | Coming soon |

### Instruction Following

- Winner: Spark-X2.6-4B
- Spark-X2.6-4B public-lane score: 78.2 (#62/149)
- ZAYA1-8B public-lane score: 23.6 (#142/149)

| Benchmark | Spark-X2.6-4B | ZAYA1-8B | Winner |
|-----------|-----------|-----------|--------|
| IFEval | 93.6% | 85.6% | Spark-X2.6-4B |
| IFBench | 75.8% | 52.6% | Spark-X2.6-4B |

### Mathematics

- Winner: Not comparable
- Spark-X2.6-4B public-lane score: 76.4 (Unranked · 3 rankable rows)
- ZAYA1-8B public-lane score: 69.4 (Unranked · 4 rankable rows)

| Benchmark | Spark-X2.6-4B | ZAYA1-8B | Winner |
|-----------|-----------|-----------|--------|
| AIME26 | 91.2% | 89.1% | Spark-X2.6-4B |
| HMMT Feb 2026 | 81.3% | 71.6% | Spark-X2.6-4B |
| IMOAnswerBench | 75.2% | 59.3% | Spark-X2.6-4B |
| Apex | Coming soon | 32.2% | Coming soon |

## FAQ

### Which is better overall, Spark-X2.6-4B or ZAYA1-8B?

Spark-X2.6-4B has the higher overall point estimate. Conditional score ranges do not establish rank confidence.

### Where is the biggest gap between Spark-X2.6-4B and ZAYA1-8B?

The widest category gap is in instruction following, where the averages are 78.2 for Spark-X2.6-4B and 23.6 for ZAYA1-8B.

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

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

### How many benchmarks does ZAYA1-8B cover on BenchLM?

ZAYA1-8B currently has 11 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Spark-X2.6-4B vs ZAYA1-74B-Preview](/compare/spark-x2-6-4b-vs-zaya1-74b-preview)
- [ZAYA1-8B vs ZAYA1-74B-Preview](/compare/zaya1-74b-preview-vs-zaya1-8b)
- [Spark-X2.6-4B vs ZAYA1-VL-8B](/compare/spark-x2-6-4b-vs-zaya1-vl-8b)
- [ZAYA1-8B vs ZAYA1-VL-8B](/compare/zaya1-8b-vs-zaya1-vl-8b)

## Explore More

- [Spark-X2.6-4B profile](/models/spark-x2-6-4b)
- [ZAYA1-8B profile](/models/zaya1-8b)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)