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AI DeepSign:[Product change] Deprecation of deepseek-v4-flash model for text signature in AI DeepSign

Last Updated:Sep 23, 2026

Effective time

October 9, 2026 (UTC+8).

Changes and impact

To continuously improve model performance and service experience, and to keep pace with the iteration of upstream model platforms, AI DeepSign will deprecate the deepseek-v4-flash model on October 9, 2026 (UTC+8). After the deprecation, this model will no longer appear in the list of available models, and related calls will no longer be supported.

  • The deprecated model and recommended replacement model are listed as follows:

    Deprecated model

    Recommended replacement model

    deepseek-v4-flash

    deepseek-v4-flash-0731

  • Your purchased packages and Credits balance are not affected by this model deprecation. Credits are universal and can continue to be used for other models supported by AI DeepSign.

Recommended actions

  • After the model is deprecated, inference calls to this model will no longer be supported, and tasks that still use deepseek-v4-flash will fail to return results. If you are using this model, make sure to complete model switching and business verification before October 9, 2026, to avoid affecting the stability of online services.

  • During the period from the announcement to the actual deprecation, the platform will continue to iterate and release new models with better performance. We recommend that you keep an eye on the list of models supported by AI DeepSign so that you can flexibly choose the model version that best fits your business scenarios.

  • If you have any questions, feel free to contact your account manager or technical support.