Future-Proof Your Integrations by Migrating to DeepSeek-V4 Endpoints
Update your API model parameters to V4 to avoid service disruptions.
Migrate your API calls from legacy names to 'deepseek-v4-pro' or 'deepseek-v4-flash' now to ensure long-term stability and access to the latest features.
The Scenario
You have internal tools or scripts integrated with the DeepSeek API and need to ensure they continue working through the 2026 model transition.
Before & after
Developers continue using 'deepseek-chat' or 'deepseek-reasoner' until they suddenly stop working on the cut-off date. This results in 1–2 hours of emergency downtime and debugging.
Use the v4-pro or v4-flash endpoints now to ensure your scripts are compatible long-term; switching takes about 5 minutes to update the config.
The Prompt
I have a codebase using the old DeepSeek model names like 'deepseek-chat'. Show me the boilerplate code to update this to the 'deepseek-v4-pro' model using the OpenAI ChatCompletions interface.
The legacy model names will be discontinued on 2026-07-24. DeepSeek is encouraging a transition to the newer V4-Pro/Flash models using either OpenAI or Anthropic compatible interfaces.
Source
Change Log | DeepSeek API Docs"The two legacy API model names... will be discontinued in three months (2026-07-24). To access the new models... set to deepseek-v4-pro."