Qwen: Qwen3.5 Plus 2026-04-20 vs Qwen: Qwen3.5-27B

For a sample job of 1 million input tokens and 250,000 output tokens, Qwen3.5 Plus 2026-04-20 costs $0.75 and Qwen3.5-27B costs $0.91, so Qwen3.5 Plus 2026-04-20 is about 1.2 times cheaper for the same work.

Qwen3.5 Plus 2026-04-20 reads up to 1,000,000 tokens at once, roughly 1,500 pages of text, against about 393 pages for Qwen3.5-27B.

Across the 18 tasks where they differ, Qwen3.5 Plus 2026-04-20 scores higher on 5 (Code Completion, Code Documentation, CSV / Spreadsheet Cleanup and others), Qwen3.5-27B on 13 (SQL Generation, Code Review, Code Refactoring and others).

Qwen3.5 Plus 2026-04-20 was released in April 2026 and Qwen3.5-27B in February 2026.

Pick Qwen3.5 Plus 2026-04-20 if you need lower cost or long documents; pick Qwen3.5-27B if you need 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.