DeepSeek: DeepSeek V4.1 Flash
The DeepSeek V4.1 Flash is a language model developed by deepseek that supports both text and image input modalities. It has a maximum context length of 1048576 tokens, allowing for extensive input processing. The model also supports tools, reasoning, but lacks structured output. When considering this model for a project, note its competitive price point, with $0.15 per million input tokens and $0.6 per million output tokens. Its blended benchmark score is 66.3 across one independent benchmark, indicating strong performance in at least some tasks. Those looking for an affordable option that can handle text and image inputs may want to shortlist the DeepSeek V4.1 Flash, particularly if its specific capabilities match their needs.
Benchmark results
Independent, published benchmarks. Blended score 66.3 across 1 benchmark, last refreshed 2026-09-23. How scoring works →
| Benchmark | Measures | Score |
|---|---|---|
| AI Index | broad capability composite | 65.1 |
- Model ID
- deepseek/deepseek-v4.1-flash
- Vendor
- deepseek
- Released
- September 2026
- Tokenizer
- DeepSeek
- Input Modalities
- text, image
- Output Modalities
- text
- Max Output
- 384,000 tokens
- Tool Calling
- ✓ supported
- Structured Output
- ✓ supported
- Reasoning Mode
- ✓ supported
- Vision
- ✓ accepts images
- Audio
- no
- Moderated
- no
What it costs in practice
Computed from the current $0.15/M input and $0.60/M output rates. Run your own numbers →
| Job | Tokens | Cost |
|---|---|---|
| Summarize a 50-page report | 30k in / 1.5k out | under $0.01 |
| Classify 1,000 customer emails | 500k in / 50k out | $0.10 |
| A month of a busy support chatbot | 5M in / 2M out | $1.95 |
Strong choice for
Category rankings
Where DeepSeek: DeepSeek V4.1 Flash places across the 12 categories it ranks in. How we rank →
| # | Category | Score |
|---|---|---|
| #4 | Image CaptioningVision · of 25 ranked | 121 |
| #9 | Short-Form SummarizationWriting · of 25 ranked | 127 |
| #9 | Email DraftingWriting · of 25 ranked | 123 |
| #9 | Language LearningEducation · of 25 ranked | 123 |
| #9 | Chat CompanionPersonal · of 25 ranked | 127 |
| #10 | Trivia & General KnowledgePersonal · of 25 ranked | 117 |
| #13 | Code CompletionCode · of 25 ranked | 133 |
| #15 | Sales / Cold EmailBusiness · of 25 ranked | 119 |
| #15 | Job Application DraftingBusiness · of 25 ranked | 119 |
| #15 | Journaling HelperPersonal · of 25 ranked | 119 |
| #15 | Recipe GenerationPersonal · of 25 ranked | 119 |
| #24 | Resume WritingBusiness · of 25 ranked | 113 |
Similar models
DeepSeek: DeepSeek V4.1 Flash (batch)
DeepSeek: DeepSeek V4 Flash Vision Exp
DeepSeek: DeepSeek V4 Flash 0423
DeepSeek: DeepSeek V4 Flash 0731
DeepSeek: DeepSeek V4 Pro 0813
DeepSeek: DeepSeek V4 Pro 0423
Quick answers
- How much does DeepSeek: DeepSeek V4.1 Flash cost?
- $0.15 per million input tokens and $0.60 per million output tokens.
- What is DeepSeek: DeepSeek V4.1 Flash's context window?
- 1,048,576 tokens, roughly 1,572 pages of text in a single request.
- Does DeepSeek: DeepSeek V4.1 Flash support tool calling?
- It supports tool calling, structured output, a reasoning mode.
- Can DeepSeek: DeepSeek V4.1 Flash process images?
- Yes, it accepts image input.