DeepSeek V4.1 Flash (1017) vs DeepSeek V4 Pro: price, context window and capabilities
DeepSeek V4.1 Flash (1017, deepseek/deepseek-v4.1-flash-1017) is a multimodal language model from DeepSeek and DeepSeek V4 Pro (deepseek/deepseek-v4-pro) a language model from DeepSeek; both are on the OceanToken API. DeepSeek V4.1 Flash costs less per token than DeepSeek V4 Pro: $0.21 against $1.056 per 1M input tokens (80% less) and $0.84 against $3.168 per 1M output tokens (73% less). Both have a 1.05M-token context window (1,048,576 tokens). Both support tool calling, reasoning and structured outputs; only DeepSeek V4.1 Flash also lists image input.
Side by side
| Spec | DeepSeek V4.1 Flash −40% | DeepSeek V4 Pro −40% |
|---|---|---|
| Model | DeepSeek V4.1 Flash (1017)deepseek/ | DeepSeek V4 Prodeepseek/ |
| Publisher | DeepSeek | DeepSeek |
| Kind | Text & vision | Text |
| Context window | 1.05M tokens1,048,576 | 1.05M tokens1,048,576 |
| Input price | $0.21 / 1M tokens | $1.056 / 1M tokens |
| Output price | $0.84 / 1M tokens | $3.168 / 1M tokens |
| Cached input price | $0.006 / 1M tokens | $0.044 / 1M tokens |
| Discount (vs official, top tier) | −40% | −40% |
| Inputs | text and images | text |
| Outputs | text | text |
| Tool calling | Yes | Yes |
| Reasoning | Yes | Yes |
| Structured outputs | Yes | Yes |
About these prices
Which should you choose?
- Choose DeepSeek V4.1 Flash to spend less per token: 80% less for input and 73% less for output than DeepSeek V4 Pro.
- Context size does not separate them: both hold about 1.05M tokens.
- Choose DeepSeek V4.1 Flash if you need image input: DeepSeek V4 Pro does not list it.
- Not sure? Call both with the same OceanToken API key and compare them on your own prompts; each request is billed per use from one prepaid balance.
Get API Key DeepSeek V4.1 Flash DeepSeek V4 Pro
Frequently asked questions
Which is cheaper, DeepSeek V4.1 Flash or DeepSeek V4 Pro?
DeepSeek V4.1 Flash. DeepSeek V4.1 Flash costs less per token than DeepSeek V4 Pro: $0.21 against $1.056 per 1M input tokens (80% less) and $0.84 against $3.168 per 1M output tokens (73% less). These are OceanToken starting prices per use; the OceanToken console always shows the current price.
Which has the larger context window, DeepSeek V4.1 Flash or DeepSeek V4 Pro?
Neither. Both have a 1.05M-token context window (1,048,576 tokens).
Can I call both DeepSeek V4.1 Flash and DeepSeek V4 Pro with one API key?
Yes. Both are on the OceanToken API at https://api.oceantoken.ai/v1: one API key and one prepaid balance call either model. Send the model id deepseek/deepseek-v4.1-flash-1017 or deepseek/deepseek-v4-pro.
Models and publishers
DeepSeek V4.1 Flash · DeepSeek V4 Pro · All DeepSeek models
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