DeepSeek: DeepSeek V4.1 Flash vs Google: Gemini 3.5 Flash Lite (batch)
Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-11-07.
| DeepSeek: DeepSeek V4.1 Flash | Google: Gemini 3.5 Flash Lite (batch) | |
|---|---|---|
| Vendor | deepseek | |
| Quality Score | 100 | 100 |
| Input Price | $0.05/M | $0.15/M |
| Output Price | $0.57/M | $1.25/M |
| Context Window | 1,048,576 | 1,048,576 |
| Max Output | 943,718 | 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, DeepSeek V4.1 Flash costs $0.19 and Gemini 3.5 Flash Lite (batch) costs $0.46, so DeepSeek V4.1 Flash is about 2.4 times cheaper for the same work.
Both read up to 1,048,576 tokens at once, roughly 1,573 pages of text.
Only Gemini 3.5 Flash Lite (batch) offers audio input and video input.
Across the 6 tasks where they differ, DeepSeek V4.1 Flash scores higher on 6 (Code Completion, Code Documentation, Regex Writing and others).
DeepSeek V4.1 Flash was released in September 2026 and Gemini 3.5 Flash Lite (batch) in July 2026.
Pick DeepSeek V4.1 Flash if you need lower cost or the stronger all-round task scores; pick Gemini 3.5 Flash Lite (batch) if you need audio input 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 | DeepSeek: DeepSeek V4.1 Flash | Google: Gemini 3.5 Flash Lite (batch) |
|---|---|---|
| Code Completion | 131 | 131 |
| Code Documentation | 131 | 131 |
| Regex Writing | 119 | 119 |
| JSON Extraction | 131 | 131 |
| Bulk Data Labeling | 129 | 129 |
| Short-Form Summarization | 123 | 123 |
Scores reflect capability match + benchmark data + pricing for each task. Methodology →