DeepSeek: DeepSeek Flash Latest vs DeepSeek: DeepSeek V4.1 Flash
Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-10-13.
| DeepSeek: DeepSeek Flash Latest | DeepSeek: DeepSeek V4.1 Flash | |
|---|---|---|
| Vendor | ~deepseek | deepseek |
| Quality Score | 100 | 100 |
| Benchmark Score | - | 66.3 |
| Input Price | $0.04/M | $0.15/M |
| Output Price | $0.89/M | $0.60/M |
| Context Window | 1,048,576 | 1,048,576 |
| Max Output | 943,718 | 393,216 |
| Tool Calling | ✓ | ✓ |
| Structured Output | ✓ | ✓ |
| Reasoning Mode | ✓ | ✓ |
| Vision | ✓ | ✓ |
| Audio | - | - |
| Benchmark Scores | ||
| ai_index | - | 65.1 |
The verdict
For a sample job of 1 million input tokens and 250,000 output tokens, DeepSeek Flash Latest costs $0.27 and DeepSeek V4.1 Flash costs $0.30, so DeepSeek Flash Latest is slightly cheaper for the same work.
Both read up to 1,048,576 tokens at once, roughly 1,573 pages of text.
Across the 19 tasks where they differ, DeepSeek V4.1 Flash on 19 (SQL Generation, Code Review, Code Completion and others).
Pick DeepSeek Flash Latest if you need lower cost; pick DeepSeek V4.1 Flash 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.
Who wins by task?
| Task | DeepSeek: DeepSeek Flash Latest | DeepSeek: DeepSeek V4.1 Flash |
|---|---|---|
| SQL Generation | 133 | 141 |
| Code Review | 132 | 144 |
| Code Completion | 131 | 133 |
| Code Refactoring | 136 | 146 |
| Bug Fixing | 136 | 148 |
| Unit Test Generation | 124 | 131 |
| Code Documentation | 131 | 137 |
| Regex Writing | 119 | 126 |
| CI/CD Pipelines | 120 | 127 |
| Frontend Component Design | 122 | 129 |
| Data Analysis | 124 | 133 |
| CSV / Spreadsheet Cleanup | 133 | 136 |
| ETL Scripting | 128 | 137 |
| Bulk Data Labeling | 129 | 129 |
| OCR / Document Parsing | 131 | 134 |
| Table Extraction from PDFs | 131 | 134 |
| Long-Document Summarization | 137 | 148 |
| Short-Form Summarization | 123 | 127 |
| Blog Post Writing | 121 | 129 |
Scores reflect capability match + benchmark data + pricing for each task. Methodology →