SpaceXAI: Grok Build 0.1 vs Qwen: Qwen3.5 Plus 2026-04-20
Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-11-07.
| SpaceXAI: Grok Build 0.1 | Qwen: Qwen3.5 Plus 2026-04-20 | |
|---|---|---|
| Vendor | x-ai | qwen |
| Quality Score | 100 | 100 |
| Input Price | $1.00/M | $0.30/M |
| Output Price | $2.00/M | $1.80/M |
| Context Window | 256,000 | 1,000,000 |
| Max Output | 230,400 | 65,536 |
| Tool Calling | ✓ | ✓ |
| Structured Output | ✓ | ✓ |
| Reasoning Mode | ✓ | ✓ |
| Vision | ✓ | ✓ |
| Audio | - | - |
The verdict
For a sample job of 1 million input tokens and 250,000 output tokens, Qwen3.5 Plus 2026-04-20 costs $0.75 and Grok Build 0.1 costs $1.50, so Qwen3.5 Plus 2026-04-20 is about 2.0 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 384 pages for Grok Build 0.1.
Only Qwen3.5 Plus 2026-04-20 offers video input.
Across the 18 tasks where they differ, Qwen3.5 Plus 2026-04-20 on 18 (SQL Generation, Code Review, Code Completion and others).
Grok Build 0.1 was released in May 2026 and Qwen3.5 Plus 2026-04-20 in April 2026.
Pick Qwen3.5 Plus 2026-04-20 if you need lower cost, long documents, 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 | SpaceXAI: Grok Build 0.1 | Qwen: Qwen3.5 Plus 2026-04-20 |
|---|---|---|
| SQL Generation | 130 | 133 |
| Code Review | 126 | 132 |
| Code Completion | 116 | 131 |
| Code Refactoring | 127 | 136 |
| Bug Fixing | 130 | 136 |
| Unit Test Generation | 121 | 124 |
| Code Documentation | 125 | 131 |
| Regex Writing | 119 | 119 |
| CI/CD Pipelines | 117 | 120 |
| CSV / Spreadsheet Cleanup | 127 | 133 |
| ETL Scripting | 122 | 128 |
| JSON Extraction | 123 | 131 |
| Bulk Data Labeling | 121 | 129 |
| OCR / Document Parsing | 128 | 131 |
| Table Extraction from PDFs | 128 | 131 |
| Long-Document Summarization | 129 | 137 |
| Short-Form Summarization | 115 | 123 |
| Blog Post Writing | 118 | 121 |
Scores reflect capability match + benchmark data + pricing for each task. Methodology →