# Sage-A1.5 vs Spark-X2.6-4B

> Side-by-side benchmark comparison for Sage-A1.5 and Spark-X2.6-4B across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/sage-a1-5-vs-spark-x2-6-4b
- Last updated: October 20, 2026

- Shared sourced benchmarks: 6
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Sage-A1.5 leads by point estimate. Conditional score ranges do not establish rank confidence. Choose using the category evidence and your own workload tests.

## Summary

- Sage-A1.5 has the higher overall point estimate 62.95 to 39.82. Conditional score ranges do not establish rank confidence.
- The clearest category separation is in reasoning, where the averages are 80.6 for Sage-A1.5 and 48.8 for Spark-X2.6-4B.
- The biggest single benchmark swing is BrowseComp in Agentic, with scores of 81.7% and 53.1%.
- Spark-X2.6-4B also has the larger context window at 1M.

## Model Snapshot

| Property | Sage-A1.5 | Spark-X2.6-4B |
|----------|----------|----------|
| Creator | InternScience | SparkLLM |
| Type | Open Weight | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 262K | 1M |
| Overall Score | 62.95 | 39.82 |
| Benchmarks Covered | 12 | 20 |
| Pricing (input/output) | $0.00 / $0.00 | $0.00 / $0.00 |

## Category Breakdown

### Agentic

- Winner: Directional only
- Sage-A1.5 public-lane score: 57.7 (Estimated · #36/132)
- Spark-X2.6-4B public-lane score: 32.7 (Estimated · #91/132)

| Benchmark | Sage-A1.5 | Spark-X2.6-4B | Winner |
|-----------|-----------|-----------|--------|
| GAIA | 95.1% | Coming soon | Coming soon |
| BrowseComp | 81.7% | 53.1% | Sage-A1.5 |
| MLE-Bench Lite | 65.2% | Coming soon | Coming soon |
| HLE w/ tools | 55.1% | 36.9% | Sage-A1.5 |
| VITA-Bench | 45.4% | Coming soon | Coming soon |
| PinchBench | 90.0% | Coming soon | Coming soon |
| BFCL v4 | Coming soon | 71.8% | Coming soon |
| τ²-bench results | Coming soon | 86.9% | Coming soon |
| MCP Atlas | Coming soon | 62.4% | Coming soon |
| τ³-bench results | Coming soon | 34.7% | Coming soon |
| Claw-Eval | Coming soon | 69.9% | Coming soon |

### Coding

- Winner: Directional only
- Sage-A1.5 public-lane score: 54 (Estimated · #34/153)
- Spark-X2.6-4B public-lane score: 30.3 (Estimated · #98/153)

| Benchmark | Sage-A1.5 | Spark-X2.6-4B | Winner |
|-----------|-----------|-----------|--------|
| SciCode | 44.3% | 36.8% | Sage-A1.5 |
| SWE-bench Pro | 61.2% | 54.3% | Sage-A1.5 |
| SWE Multilingual | 72.7% | 64.7% | Sage-A1.5 |
| SWE-bench Verified | Coming soon | 62.8% | Coming soon |

### Reasoning

- Winner: Not comparable
- Sage-A1.5 public-lane score: 80.6 (Unranked · 2 rankable rows)
- Spark-X2.6-4B public-lane score: 48.8 (Unranked · 2 rankable rows)

| Benchmark | Sage-A1.5 | Spark-X2.6-4B | Winner |
|-----------|-----------|-----------|--------|
| CritPt | 20.0% | Coming soon | Coming soon |
| LongBench v2 | Coming soon | 53.3% | Coming soon |

### Knowledge

- Winner: Not comparable
- Sage-A1.5 public-lane score: Coming soon
- Spark-X2.6-4B public-lane score: 42.7 (Estimated · #111/187)

| Benchmark | Sage-A1.5 | Spark-X2.6-4B | Winner |
|-----------|-----------|-----------|--------|
| FrontierScience Research | 48.3% | 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: Sage-A1.5
- Sage-A1.5 public-lane score: 91.9 (#22/152)
- Spark-X2.6-4B public-lane score: 78.2 (#64/152)

| Benchmark | Sage-A1.5 | Spark-X2.6-4B | Winner |
|-----------|-----------|-----------|--------|
| IFBench | 81.6% | 75.8% | Sage-A1.5 |
| IFEval | Coming soon | 93.6% | Coming soon |

### Mathematics

- Winner: Not comparable
- Sage-A1.5 public-lane score: Coming soon
- Spark-X2.6-4B public-lane score: 76.4 (Unranked · 3 rankable rows)

| Benchmark | Sage-A1.5 | 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, Sage-A1.5 or Spark-X2.6-4B?

Sage-A1.5 has the higher overall point estimate. Conditional score ranges do not establish rank confidence.

### Where is the biggest gap between Sage-A1.5 and Spark-X2.6-4B?

The widest category gap is in reasoning, where the averages are 80.6 for Sage-A1.5 and 48.8 for Spark-X2.6-4B.

### How many benchmarks does Sage-A1.5 cover on BenchLM?

Sage-A1.5 currently has 12 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

- [Sage-A1.5 vs Sage-A1.5-F16-GGUF](/compare/sage-a1-5-vs-sage-a1-5-f16-gguf)
- [Spark-X2.6-4B vs Sage-A1.5-F16-GGUF](/compare/sage-a1-5-f16-gguf-vs-spark-x2-6-4b)
- [Sage-A1.5 vs Sage-A1.5-FP8](/compare/sage-a1-5-vs-sage-a1-5-fp8)
- [Spark-X2.6-4B vs Sage-A1.5-FP8](/compare/sage-a1-5-fp8-vs-spark-x2-6-4b)

## Explore More

- [Sage-A1.5 profile](/models/sage-a1-5)
- [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)