Anthropic: Claude Sonnet Latest vs Qwen: Qwen3.5-27B
Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-11-07.
| Anthropic: Claude Sonnet Latest | Qwen: Qwen3.5-27B | |
|---|---|---|
| Vendor | ~anthropic | qwen |
| Quality Score | 100 | 100 |
| Benchmark Score | - | 55.6 |
| Input Price | $2.00/M | $0.26/M |
| Output Price | $10.00/M | $2.60/M |
| Context Window | 1,000,000 | 262,144 |
| Max Output | 128,000 | 81,920 |
| Tool Calling | ✓ | ✓ |
| Structured Output | ✓ | ✓ |
| Reasoning Mode | ✓ | ✓ |
| Vision | ✓ | ✓ |
| Audio | - | - |
| Benchmark Scores | ||
| ai_index | - | 55.7 |
The verdict
For a sample job of 1 million input tokens and 250,000 output tokens, Qwen3.5-27B costs $0.91 and Claude Sonnet Latest costs $4.50, so Qwen3.5-27B is about 4.9 times cheaper for the same work.
Claude Sonnet Latest reads up to 1,000,000 tokens at once, roughly 1,500 pages of text, against about 393 pages for Qwen3.5-27B.
Only Qwen3.5-27B offers video input.
Across the 18 tasks where they differ, Claude Sonnet Latest scores higher on 1 (CSV / Spreadsheet Cleanup), Qwen3.5-27B on 17 (SQL Generation, Code Review, Code Completion and others).
Claude Sonnet Latest was released in April 2026 and Qwen3.5-27B in February 2026.
Pick Claude Sonnet Latest if you need long documents; pick Qwen3.5-27B if you need lower cost, video input or the stronger all-round task scores.
Costs use current list prices per million tokens; page counts assume about 0.75 words per token and 500 words per page.
Who wins by task?
| Task | Anthropic: Claude Sonnet Latest | Qwen: Qwen3.5-27B |
|---|---|---|
| SQL Generation | 132 | 137 |
| Code Review | 132 | 137 |
| Code Completion | 117 | 129 |
| Code Refactoring | 136 | 136 |
| Bug Fixing | 136 | 141 |
| Unit Test Generation | 124 | 127 |
| Code Documentation | 129 | 130 |
| Regex Writing | 117 | 125 |
| CI/CD Pipelines | 120 | 123 |
| Frontend Component Design | 122 | 128 |
| Data Analysis | 124 | 132 |
| CSV / Spreadsheet Cleanup | 132 | 130 |
| ETL Scripting | 128 | 130 |
| JSON Extraction | 121 | 131 |
| Bulk Data Labeling | 118 | 129 |
| Long-Document Summarization | 136 | 138 |
| Short-Form Summarization | 113 | 126 |
| Blog Post Writing | 120 | 125 |
Scores reflect capability match + benchmark data + pricing for each task. Methodology →