# Claude Sonnet 5 vs ERNIE 5.5 Flash Preview

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

- Canonical page: https://benchlm.ai/compare/claude-sonnet-5-vs-ernie-5-5-flash-preview
- Last updated: November 11, 2026

- Shared sourced benchmarks: 2
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Evidence is too thin for a benchmark verdict: Claude Sonnet 5 and ERNIE 5.5 Flash Preview share only 2 sourced benchmark rows.

## Summary

- Only 2 shared sourced benchmark rows are available. That is not enough for a broad capability verdict, so this mirror does not name an overall winner.
- ERNIE 5.5 Flash Preview has the lower published output-token price.

## Model Snapshot

| Property | Claude Sonnet 5 | ERNIE 5.5 Flash Preview |
|----------|----------|----------|
| Creator | Anthropic | Baidu |
| Type | Proprietary | Pending |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 1M |
| Independent public score (not head-to-head) | 64.23 | null |
| Benchmarks Covered | 32 | 15 |
| Pricing (input/output) | $2.00 / $10.00 | Pricing unavailable / Pricing unavailable |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Claude Sonnet 5 public-lane score: 64.2 (Supported · #18/132)
- ERNIE 5.5 Flash Preview public-lane score: Coming soon

| Benchmark | Claude Sonnet 5 | ERNIE 5.5 Flash Preview | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 4.1 | 12.10% | Coming soon | Coming soon |
| Terminal-Bench 3.0 | 14.6% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | 80.4% | Coming soon | Coming soon |
| BrowseComp | 84.7% | 87.4% | ERNIE 5.5 Flash Preview |
| HLE w/ tools | 57.4% | Coming soon | Coming soon |
| OSWorld-Verified | 81.2% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 74.5% | Coming soon | Coming soon |
| ApprenticeBench | 16% | Coming soon | Coming soon |
| MazeBench | 0% | Coming soon | Coming soon |
| OSWorld 2.1 | 57.0% | Coming soon | Coming soon |
| Terminal-Bench 4.0 | Coming soon | 46.50% | Coming soon |
| Terminal-Bench-Science 0.1 | Coming soon | 21.0% | Coming soon |
| AutomationBench | Coming soon | 61.9% | Coming soon |
| APEX-Agents | Coming soon | 64.2% | Coming soon |
| DRACO | Coming soon | 84.9% | Coming soon |
| SpreadsheetBench 2 | Coming soon | 36.4% | Coming soon |
| Agents' Last Exam (CLI) | Coming soon | 29.0% | Coming soon |
| Toolathlon-Verified | Coming soon | 75.0% | Coming soon |
| MCP Atlas | Coming soon | 84.6% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Claude Sonnet 5 public-lane score: 57.2 (Supported · #27/158)
- ERNIE 5.5 Flash Preview public-lane score: Coming soon

| Benchmark | Claude Sonnet 5 | ERNIE 5.5 Flash Preview | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | 85.2% | Coming soon | Coming soon |
| SWE-bench Pro | 63.2% | Coming soon | Coming soon |
| SWE Multilingual | 78.3% | Coming soon | Coming soon |
| SWE Multimodal | 28.1% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | 80.4% | Coming soon | Coming soon |
| FrontierCode 1.1 Main | 42.7% | Coming soon | Coming soon |
| CursorBench 3.2 | 61.5% | Coming soon | Coming soon |
| VulcanBench CII v1 | 89.2% | Coming soon | Coming soon |
| LiveCodeBench (Vals) | 82.4% | Coming soon | Coming soon |
| SWE-bench (Vals) | 79.6% | Coming soon | Coming soon |
| CursorBench 4.0 | 34.1% | Coming soon | Coming soon |
| DeepSWE | Coming soon | 71.2% | Coming soon |
| ProgramBench | Coming soon | 29.5% | Coming soon |
| NL2Repo | Coming soon | 64.8% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Claude Sonnet 5 public-lane score: 61.5 (Estimated · #29/158)
- ERNIE 5.5 Flash Preview public-lane score: Coming soon

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- Claude Sonnet 5 public-lane score: 61.9 (Supported · #33/67)
- ERNIE 5.5 Flash Preview public-lane score: Coming soon

| Benchmark | Claude Sonnet 5 | ERNIE 5.5 Flash Preview | Winner |
|-----------|-----------|-----------|--------|
| ParseBench | 61.16% | Coming soon | Coming soon |
| CharXiv | 88.3% | Coming soon | Coming soon |
| CharXiv w/o tools | 77% | Coming soon | Coming soon |
| OfficeQA Pro v2 | Coming soon | 67.9% | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- Claude Sonnet 5 public-lane score: 63.3 (Supported · #39/179)
- ERNIE 5.5 Flash Preview public-lane score: Coming soon

| Benchmark | Claude Sonnet 5 | ERNIE 5.5 Flash Preview | Winner |
|-----------|-----------|-----------|--------|
| HLE | 57.4% | Coming soon | Coming soon |
| HLE w/o tools | 43.2% | 46.4% | ERNIE 5.5 Flash Preview |
| HLE-Verified | 31.0% | Coming soon | Coming soon |
| LABBench2 | 80.1% | Coming soon | Coming soon |
| GPQA Diamond (Vals) | 88.9% | Coming soon | Coming soon |
| MMLU-Pro (Vals) | 87.5% | Coming soon | Coming soon |

### Mathematics

- Winner: Insufficient shared evidence
- Claude Sonnet 5 public-lane score: 64.9 (Unranked · 2 rankable rows)
- ERNIE 5.5 Flash Preview public-lane score: Coming soon

| Benchmark | Claude Sonnet 5 | ERNIE 5.5 Flash Preview | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | 65.614% | Coming soon | Coming soon |
| FrontierMath v2 (Tier 4) | 29.268% | Coming soon | Coming soon |

## FAQ

### Is there enough evidence to pick between Claude Sonnet 5 and ERNIE 5.5 Flash Preview?

Not yet. The models share only 2 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 vs Claude Fable 5.2](/compare/claude-fable-5-2-vs-claude-sonnet-5)
- [ERNIE 5.5 Flash Preview vs Claude Fable 5.2](/compare/claude-fable-5-2-vs-ernie-5-5-flash-preview)
- [Claude Sonnet 5 vs Gemini 4 Carbon](/compare/claude-sonnet-5-vs-gemini-4-carbon)
- [ERNIE 5.5 Flash Preview vs Gemini 4 Carbon](/compare/ernie-5-5-flash-preview-vs-gemini-4-carbon)

## Explore More

- [Claude Sonnet 5 profile](/models/claude-sonnet-5)
- [ERNIE 5.5 Flash Preview profile](/models/ernie-5-5-flash-preview)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)