OpenAI: GPT-5.4 Nano vs Qwen: Qwen3.5-Flash
Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-11-07.
| OpenAI: GPT-5.4 Nano | Qwen: Qwen3.5-Flash | |
|---|---|---|
| Vendor | openai | qwen |
| Quality Score | 100 | 100 |
| Benchmark Score | 68.1 | - |
| Input Price | $0.20/M | $0.07/M |
| Output Price | $1.25/M | $0.26/M |
| Context Window | 400,000 | 1,000,000 |
| Max Output | 128,000 | 65,536 |
| Tool Calling | ✓ | ✓ |
| Structured Output | ✓ | ✓ |
| Reasoning Mode | ✓ | ✓ |
| Vision | ✓ | ✓ |
| Audio | - | - |
| Benchmark Scores | ||
| ai_index | 63.1 | - |
| ai_index_agentic | 45.4 | - |
| ai_index_coding | 92.5 | - |
The verdict
For a sample job of 1 million input tokens and 250,000 output tokens, Qwen3.5-Flash costs $0.13 and GPT-5.4 Nano costs $0.51, so Qwen3.5-Flash is about 3.9 times cheaper for the same work.
Qwen3.5-Flash reads up to 1,000,000 tokens at once, roughly 1,500 pages of text, against about 600 pages for GPT-5.4 Nano.
Only Qwen3.5-Flash offers video input.
Across the 20 tasks where they differ, GPT-5.4 Nano scores higher on 20 (SQL Generation, Code Review, Code Completion and others).
GPT-5.4 Nano was released in March 2026 and Qwen3.5-Flash in February 2026.
Pick GPT-5.4 Nano if you need the stronger all-round task scores; pick Qwen3.5-Flash if you need lower cost, long documents or video input.
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 | OpenAI: GPT-5.4 Nano | Qwen: Qwen3.5-Flash |
|---|---|---|
| SQL Generation | 163 | 134 |
| Code Review | 158 | 132 |
| Code Completion | 133 | 131 |
| Code Refactoring | 157 | 136 |
| Bug Fixing | 168 | 136 |
| Unit Test Generation | 148 | 124 |
| Code Documentation | 140 | 131 |
| Regex Writing | 132 | 119 |
| CI/CD Pipelines | 139 | 120 |
| Frontend Component Design | 141 | 122 |
| Data Analysis | 159 | 124 |
| CSV / Spreadsheet Cleanup | 151 | 134 |
| ETL Scripting | 148 | 128 |
| JSON Extraction | 146 | 131 |
| Bulk Data Labeling | 134 | 129 |
| OCR / Document Parsing | 144 | 131 |
| Table Extraction from PDFs | 144 | 131 |
| Long-Document Summarization | 154 | 138 |
| Short-Form Summarization | 130 | 123 |
| Blog Post Writing | 135 | 122 |
Scores reflect capability match + benchmark data + pricing for each task. Methodology →