# Claude Sonnet 5.5 vs Sage-A1.5

> Side-by-side benchmark comparison for Claude Sonnet 5.5 and Sage-A1.5 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/claude-sonnet-5-5-vs-sage-a1-5
- Last updated: October 20, 2026

- Shared sourced benchmarks: 3
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Evidence is too thin for a benchmark verdict: Claude Sonnet 5.5 and Sage-A1.5 share only 3 sourced benchmark rows.

## Summary

- Only 3 shared sourced benchmark rows are available. That is not enough for a broad capability verdict, so this mirror does not name an overall winner.
- Sage-A1.5 has the lower published output-token price.
- Claude Sonnet 5.5 has the larger published context window at 1M.

## Model Snapshot

| Property | Claude Sonnet 5.5 | Sage-A1.5 |
|----------|----------|----------|
| Creator | Anthropic | InternScience |
| Type | Proprietary | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 262K |
| Independent public score (not head-to-head) | 82.24 | 62.95 |
| Benchmarks Covered | 56 | 12 |
| Pricing (input/output) | $2.00 / $10.00 | $0.00 / $0.00 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Claude Sonnet 5.5 public-lane score: 69.1 (Supported · #11/132)
- Sage-A1.5 public-lane score: 57.7 (Estimated · #36/132)

| Benchmark | Claude Sonnet 5.5 | Sage-A1.5 | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 4.0 | 70.60% | Coming soon | Coming soon |
| HLE w/ tools | 64.5% | 55.1% | Claude Sonnet 5.5 |
| DRACO | 87.0% | Coming soon | Coming soon |
| Terminal-Bench-Science 0.1 | 59.9% | Coming soon | Coming soon |
| LAB all-pass (Harvey held-out) | 10.0% | Coming soon | Coming soon |
| LAB criterion-pass (Harvey held-out) | 93.1% | Coming soon | Coming soon |
| Toolathlon Verified Pass@3 | 85.2% | Coming soon | Coming soon |
| Toolathlon Verified Pass³ | 68.5% | Coming soon | Coming soon |
| Toolathlon Verified avg. turns | 31.6 turns | Coming soon | Coming soon |
| AutomationBench (Zapier 1.0.6) | 44.70% | Coming soon | Coming soon |
| Toolathlon-Verified | 77.8% | Coming soon | Coming soon |
| Hermes Index | 53.1% | Coming soon | Coming soon |
| Hermes Bench | 73.5% | Coming soon | Coming soon |
| MazeBench | 8% | Coming soon | Coming soon |
| GAIA | Coming soon | 95.1% | Coming soon |
| BrowseComp | Coming soon | 81.7% | Coming soon |
| MLE-Bench Lite | Coming soon | 65.2% | Coming soon |
| VITA-Bench | Coming soon | 45.4% | Coming soon |
| PinchBench | Coming soon | 90.0% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Claude Sonnet 5.5 public-lane score: 84.3 (Supported · #1/153)
- Sage-A1.5 public-lane score: 54 (Estimated · #34/153)

| Benchmark | Claude Sonnet 5.5 | Sage-A1.5 | Winner |
|-----------|-----------|-----------|--------|
| FrontierCode 1.1 Main | 46.2% | Coming soon | Coming soon |
| CursorBench 4.0 | 55.5% | Coming soon | Coming soon |
| SWE-bench Pro | 81.3% | 61.2% | Claude Sonnet 5.5 |
| SWE Multilingual | 90.3% | 72.7% | Claude Sonnet 5.5 |
| SWE Multimodal | 54.3% | Coming soon | Coming soon |
| DeepSWE | 71.0% | Coming soon | Coming soon |
| FrontierCode 1.1 Extended | 59.1% | Coming soon | Coming soon |
| ProgramBench | 79.7% | Coming soon | Coming soon |
| FrontierSWE v2 | 61.9% | Coming soon | Coming soon |
| Bug Hunt Bench | 51.3 fixes | Coming soon | Coming soon |
| SciCode | Coming soon | 44.3% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Claude Sonnet 5.5 public-lane score: 81.8 (#6/27)
- Sage-A1.5 public-lane score: 80.6 (Unranked · 2 rankable rows)

| Benchmark | Claude Sonnet 5.5 | Sage-A1.5 | Winner |
|-----------|-----------|-----------|--------|
| CritPt | Coming soon | 20.0% | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- Claude Sonnet 5.5 public-lane score: 86.7 (Unranked · 7 rankable rows)
- Sage-A1.5 public-lane score: Coming soon

| Benchmark | Claude Sonnet 5.5 | Sage-A1.5 | Winner |
|-----------|-----------|-----------|--------|
| ExtractBench Pro | 32% | Coming soon | Coming soon |
| ExtractBench (LlamaIndex) | 94.68% | Coming soon | Coming soon |
| ParseBench | 70.18% | Coming soon | Coming soon |
| Chartography (no tools) | 61.6% | Coming soon | Coming soon |
| Chartography (tools) | 90.2% | Coming soon | Coming soon |
| BenchCAD Vision2Code (no tools) | 0.747 | Coming soon | Coming soon |
| BenchCAD Vision2Code (tools) | 0.963 | Coming soon | Coming soon |
| Biomedical image analysis | 72.2% | Coming soon | Coming soon |
| OfficeQA | 76.9% | Coming soon | Coming soon |
| OfficeQA Pro | 65.6% | Coming soon | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- Claude Sonnet 5.5 public-lane score: 82.8 (Supported · #5/187)
- Sage-A1.5 public-lane score: Coming soon

| Benchmark | Claude Sonnet 5.5 | Sage-A1.5 | Winner |
|-----------|-----------|-----------|--------|
| HealthBench (raw) | 69.4% | Coming soon | Coming soon |
| HealthBench (length-adjusted) | 65.4% | Coming soon | Coming soon |
| HealthBench Professional (raw) | 77.1% | Coming soon | Coming soon |
| HealthBench Professional | 69.2% | Coming soon | Coming soon |
| BioMysteryBench (human-solvable) | 89.2% | Coming soon | Coming soon |
| BioMysteryBench (human-difficult) | 44.7% | Coming soon | Coming soon |
| SpatialBench Verified | 72.5% | Coming soon | Coming soon |
| SingleCellBench | 59.1% | Coming soon | Coming soon |
| Protein Design | 51.0% | Coming soon | Coming soon |
| Morphology-to-molecule matching | 25.0% | Coming soon | Coming soon |
| Medicinal chemistry | 65.3% | Coming soon | Coming soon |
| Protein Design library ranking | 54.8% | Coming soon | Coming soon |
| De novo protein-binder design | 82.3% | Coming soon | Coming soon |
| Protocols (troubleshooting) | 67.3% | Coming soon | Coming soon |
| Protocols (understanding) | 66.6% | Coming soon | Coming soon |
| HLE w/o tools | 56.9% | Coming soon | Coming soon |
| FrontierScience Research | Coming soon | 48.3% | Coming soon |

### Multilingual

- Winner: Insufficient shared evidence
- Claude Sonnet 5.5 public-lane score: Coming soon
- Sage-A1.5 public-lane score: Coming soon

| Benchmark | Claude Sonnet 5.5 | Sage-A1.5 | Winner |
|-----------|-----------|-----------|--------|
| GMMLU | 92.1% | Coming soon | Coming soon |
| MILU | 91.6% | Coming soon | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- Claude Sonnet 5.5 public-lane score: Coming soon
- Sage-A1.5 public-lane score: 91.9 (#22/152)

| Benchmark | Claude Sonnet 5.5 | Sage-A1.5 | Winner |
|-----------|-----------|-----------|--------|
| IFBench | Coming soon | 81.6% | Coming soon |

### Mathematics

- Winner: Insufficient shared evidence
- Claude Sonnet 5.5 public-lane score: 95.2 (Unranked · 4 rankable rows)
- Sage-A1.5 public-lane score: Coming soon

| Benchmark | Claude Sonnet 5.5 | Sage-A1.5 | Winner |
|-----------|-----------|-----------|--------|
| ArXivMath Aug. 2026 (no tools) | 86.8% | Coming soon | Coming soon |
| ArXivMath Aug. 2026 (tools) | 95.2% | Coming soon | Coming soon |
| FrontierMath v2 (Tiers 1-3) | 88.772% | Coming soon | Coming soon |
| FrontierMath v2 (Tier 4) | 80.488% | Coming soon | Coming soon |

## FAQ

### Is there enough evidence to pick between Claude Sonnet 5.5 and Sage-A1.5?

Not yet. The models share only 3 sourced benchmark rows, 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

- [Claude Sonnet 5.5 vs Sage-A1.5-F16-GGUF](/compare/claude-sonnet-5-5-vs-sage-a1-5-f16-gguf)
- [Sage-A1.5 vs Sage-A1.5-F16-GGUF](/compare/sage-a1-5-vs-sage-a1-5-f16-gguf)
- [Claude Sonnet 5.5 vs Sage-A1.5-FP8](/compare/claude-sonnet-5-5-vs-sage-a1-5-fp8)
- [Sage-A1.5 vs Sage-A1.5-FP8](/compare/sage-a1-5-vs-sage-a1-5-fp8)

## Explore More

- [Claude Sonnet 5.5 profile](/models/claude-sonnet-5-5)
- [Sage-A1.5 profile](/models/sage-a1-5)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)