DeepSeek V4 Pro vs Qwen3.8 Flash: price, context window and capabilities
DeepSeek V4 Pro (deepseek/deepseek-v4-pro) is a language model from DeepSeek and Qwen3.8 Flash (qwen/qwen3.8-flash) a multimodal language model from Qwen; both are on the OceanToken API. Qwen3.8 Flash costs less per token than DeepSeek V4 Pro: $0.143 against $1.056 per 1M input tokens (86% less) and $0.447 against $3.168 per 1M output tokens (86% less). DeepSeek V4 Pro has the larger context window: 1.05M tokens (1,048,576) against 984K (983,616) for Qwen3.8 Flash. Both support tool calling, reasoning and structured outputs; only Qwen3.8 Flash also lists image input and video input.
Side by side
| Spec | DeepSeek V4 Pro −40% | Qwen3.8 Flash −25% |
|---|---|---|
| Model | DeepSeek V4 Prodeepseek/ | Qwen3.8 Flashqwen/ |
| Publisher | DeepSeek | Qwen |
| Kind | Text | Text, vision & video |
| Context window | 1.05M tokens1,048,576 | 984K tokens983,616 |
| Input price | $1.056 / 1M tokens | $0.143 / 1M tokens |
| Output price | $3.168 / 1M tokens | $0.447 / 1M tokens |
| Cached input price | $0.044 / 1M tokens | $0.016 / 1M tokens |
| Cache write price | – | $0.20 / 1M tokens |
| Discount (vs official, top tier) | −40% | −25% |
| Inputs | text | text, images and video |
| Outputs | text | text |
| Tool calling | Yes | Yes |
| Reasoning | Yes | Yes |
| Structured outputs | Yes | Yes |
About these prices
Which should you choose?
- Choose Qwen3.8 Flash to spend less per token: 86% less for input and 86% less for output than DeepSeek V4 Pro.
- Choose DeepSeek V4 Pro for the longest inputs: its context window holds 1.05M tokens against 984K for Qwen3.8 Flash.
- Choose Qwen3.8 Flash if you need image input and video input: DeepSeek V4 Pro does not list them.
- 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 Pro Qwen3.8 Flash
Frequently asked questions
Which is cheaper, DeepSeek V4 Pro or Qwen3.8 Flash?
Qwen3.8 Flash. Qwen3.8 Flash costs less per token than DeepSeek V4 Pro: $0.143 against $1.056 per 1M input tokens (86% less) and $0.447 against $3.168 per 1M output tokens (86% less). These are OceanToken starting prices per use; the OceanToken console always shows the current price.
Which has the larger context window, DeepSeek V4 Pro or Qwen3.8 Flash?
DeepSeek V4 Pro. DeepSeek V4 Pro has the larger context window: 1.05M tokens (1,048,576) against 984K (983,616) for Qwen3.8 Flash.
Can I call both DeepSeek V4 Pro and Qwen3.8 Flash 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-pro or qwen/qwen3.8-flash.
Models and publishers
DeepSeek V4 Pro · Qwen3.8 Flash · All DeepSeek models · All Qwen models
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