Model comparison
Compare Qwen3.8-Flash and DeepSeek-V4-Pro using the same provider-sourced text & reasoning rubric. No mystery score and no invented benchmark ranking.
Facts checked September 4, 2026
Set your usage. Your estimate updates as you type.
Example: 6,000 input tokens for 10 pages, plus a 500-token summary. Page lengths vary; adjust the numbers below.
One run sends your input to the model once and receives an answer. Tokens are pieces of text: input is what you send, output is the answer you receive.
Estimates exclude taxes, tools, cache storage/writes, free allowances and custom discounts. Image estimates cover output only, not prompt or reference-image charges. Quality modes differ by model. Unlisted settings are not treated as free.
| Model | Access | Estimated total (USD) |
|---|---|---|
| DeepSeek-V4-ProDeepSeek | DeepSeek | No reviewed rate |
| Qwen3.8-FlashQwen | Qwen | No reviewed rate |
Quick take
Alibaba's efficient million-context multimodal model for fast agents, coding, document work, vision, video understanding, and tool use.
Knowledge cutoff is not published, and regional Model Studio terms can differ from other Qwen gateways. Confirm the exact endpoint, long-context pricing, output limit, logging, and retention settings.
DeepSeek's flagship million-context text model for difficult reasoning, coding, long-running agents, tools, and very large outputs.
The provider does not publish a knowledge cutoff or a universal speed measure. Review jurisdiction, account eligibility, cache behavior, data terms, and the full reasoning-output cost before sending sensitive workloads.
Compare the published facts
Values use each provider's own published units and limits. A blank means the provider did not publish a directly comparable value in the sources reviewed.
| Text & reasoning | Qwen3.8-Flash | DeepSeek-V4-Pro |
|---|---|---|
| Context windowMaximum combined prompt and working context documented by the provider. | Up to 1M tokens through Model Studio | 1M tokens |
| Maximum outputProvider-published response limit, where available. | Up to 131,072 tokens | Up to 384K tokens |
| Knowledge cutoffLatest reliable knowledge date explicitly published by the model provider. Search and connected tools can retrieve newer information but do not change the model's built-in cutoff. | Not published | Not published |
| Input priceCurrent standard list price per million input tokens unless noted. | $0.113 / 1M tokens | $1.32 / 1M peak uncached; $0.66 off-peak |
| Output priceCurrent standard list price per million output tokens unless noted. | $0.382 / 1M tokens | $3.96 / 1M peak; $1.98 off-peak |
| InputsMedia types accepted by the listed model endpoint. | Text, image, video | Text |
| Tools & agentsSelected native tools and agent-building capabilities, not an exhaustive list. | Function calling, web search, structured output, tools | Tools, JSON output, Responses API, thinking effort, FIM beta |
How to choose
Start with the job you need to complete, then validate cost, access, and policy details on your exact provider route.
Alibaba's public model page should be read together with the selected Model Studio region and account terms. Do not assume another Qwen gateway's retention or training setting applies to the Alibaba Cloud route.
DeepSeek documents its Responses API as stateless and says responses and conversations are not stored by that endpoint. This is not a complete account-wide retention or training-use promise; review current platform terms and automatic cache behavior for sensitive data.
Provider and API links
Frequently asked questions
Qwen3.8-Flash: Alibaba's efficient million-context multimodal model for fast agents, coding, document work, vision, video understanding, and tool use. DeepSeek-V4-Pro: DeepSeek's flagship million-context text model for difficult reasoning, coding, long-running agents, tools, and very large outputs.
Consider Qwen3.8-Flash when your priority is Cost-sensitive multimodal agents. Consider DeepSeek-V4-Pro when your priority is Complex coding and tool-using agents. Test both with your own data and provider route before committing.
No. This comparison aligns provider-published facts for the Text & reasoning category. It does not claim a universal winner or combine incompatible third-party benchmark scores.
