DeepSeek: DeepSeek V4.1 Flash 1017 vs DeepSeek: DeepSeek Flash Latest
Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-10-19.
| DeepSeek: DeepSeek V4.1 Flash 1017 | DeepSeek: DeepSeek Flash Latest | |
|---|---|---|
| Vendor | deepseek | ~deepseek |
| Quality Score | 100 | 100 |
| Input Price | $0.15/M | $0.05/M |
| Output Price | $0.60/M | $0.60/M |
| Context Window | 1,048,576 | 1,048,576 |
| Max Output | 393,216 | 943,718 |
| Tool Calling | ✓ | ✓ |
| Structured Output | ✓ | ✓ |
| Reasoning Mode | ✓ | ✓ |
| Vision | ✓ | ✓ |
| Audio | - | - |
The verdict
For a sample job of 1 million input tokens and 250,000 output tokens, DeepSeek Flash Latest costs $0.20 and DeepSeek V4.1 Flash 1017 costs $0.30, so DeepSeek Flash Latest is about 1.5 times cheaper for the same work.
Both read up to 1,048,576 tokens at once, roughly 1,573 pages of text.
Across the 5 tasks where they differ, DeepSeek Flash Latest on 5 (Code Completion, Code Documentation, Regex Writing and others).
DeepSeek V4.1 Flash 1017 was released in October 2026 and DeepSeek Flash Latest in September 2026.
Pick DeepSeek Flash Latest if you need lower cost 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 | DeepSeek: DeepSeek V4.1 Flash 1017 | DeepSeek: DeepSeek Flash Latest |
|---|---|---|
| Code Completion | 131 | 131 |
| Code Documentation | 131 | 131 |
| Regex Writing | 119 | 119 |
| JSON Extraction | 131 | 131 |
| Short-Form Summarization | 123 | 123 |
Scores reflect capability match + benchmark data + pricing for each task. Methodology →