Classification Accuracy Benchmark
Independent accuracy testing against the EU's EBTI (European Binding Tariff Information) database — the gold standard for HS code classification.
Methodology
Test Data
Products are sourced from the EU's EBTI (European Binding Tariff Information) database — legally binding classification decisions made by EU customs authorities. Each product includes an official product description, product image, and the correct HS code assigned by certified customs experts.
Classification Process
Each product is classified using Customs8's multi-step AI pipeline: semantic keyword extraction, candidate heading search across 16,000+ tariff codes, and final classification with full commodity tree context. The AI receives both product images and descriptions — identical to real-world API usage.
Accuracy by Chapter
| Chapter | Products | 6-Digit | 8-Digit | 6-Digit Accuracy |
|---|---|---|---|---|
| Chapter 64 | 1 | 0/1 | 0/1 |
|
| Chapter 71 | 1 | 1/1 | 1/1 |
|
| Chapter 94 | 1 | 0/1 | 0/1 |
|
Error Distribution
Individual Classifications
| Product | Expected | Classified | 6-Digit | 8-Digit | Time |
|---|---|---|---|---|---|
| Bei der als "Sitzhocker schwarz, Art.Nr. 15955" bezeichneten... | 9403.60 | 9403.82 | Fail | Fail | 61.1s |
| Regole generali per l’interpretazione della nomenclatura com... | 7113.19 | 7113.19 | Pass | Pass | 40.7s |
| Pantofola con tomaia in materiale superficiale a quadri e so... | 6405.20 | 6404.19 | Fail | Fail | 48.2s |
Historical Benchmark Runs
| Date | Products | Model | Version | |
|---|---|---|---|---|
| 06 Mar 2026 20:22 | 2 | claude-sonnet-4-5-20250929 | v8-db-candidates | View |
| 06 Mar 2026 19:47 | 10 | claude-sonnet-4-5-20250929 | v8-db-candidates | View |
| 06 Mar 2026 19:41 | 3 | claude-sonnet-4-5-20250929 | v10-hybrid | View |
| 06 Mar 2026 19:35 | 4 | claude-sonnet-4-5-20250929 | v10-hybrid | View |
| 06 Mar 2026 19:15 | 10 | claude-sonnet-4-5-20250929 | v9-haiku-candidates | View |
| 06 Mar 2026 19:00 | 10 | claude-sonnet-4-5-20250929 | v9-haiku-candidates | View |
| 06 Mar 2026 18:38 | 9 | claude-sonnet-4-5-20250929 | v8-db-candidates | View |
| 06 Mar 2026 17:51 | 10 | claude-sonnet-4-5-20250929 | v7-function-over-material | View |
| 06 Mar 2026 17:48 | 2 | claude-sonnet-4-5-20250929 | v7-function-over-material | View |
| 06 Mar 2026 17:46 | 1 | claude-sonnet-4-5-20250929 | v7-function-over-material | View |
| 06 Mar 2026 17:41 | 1 | claude-sonnet-4-5-20250929 | v7-function-over-material | View |
| 06 Mar 2026 17:39 | 1 | claude-sonnet-4-5-20250929 | v7-function-over-material | View |
| 06 Mar 2026 16:58 | 10 | claude-sonnet-4-5-20250929 | v7-function-over-material | View |
| 06 Mar 2026 16:44 | 10 | claude-sonnet-4-5-20250929 | v6-confidence | View |
| 06 Mar 2026 16:28 | 3 | claude-sonnet-4-5-20250929 | v6-confidence | Current |
| 06 Mar 2026 15:56 | 3 | claude-sonnet-4-5-20250929 | v6-confidence | View |
| 06 Mar 2026 15:43 | 10 | claude-sonnet-4-5-20250929 | v6-confidence | View |
| 06 Mar 2026 15:40 | 1 | claude-sonnet-4-5-20250929 | v6-confidence | View |
| 06 Mar 2026 15:36 | 2 | claude-sonnet-4-5-20250929 | v6-confidence | View |
| 06 Mar 2026 15:32 | 3 | claude-sonnet-4-5-20250929 | v6-confidence | View |
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