Future-Proof Your Integration by Migrating to DeepSeek-V4 API Names
Switch to V4-Pro or V4-Flash endpoints before the July 2026 deadline.
Update your API implementation to use the new deepseek-v4-pro or deepseek-v4-flash identifiers to avoid service interruptions.
The Scenario
You are maintaining an enterprise AI application and need to ensure your API integrations remain functional past the upcoming deprecation deadline.
Before & after
Developers often stay on old API endpoints for months, risking service breaks when models are retired after a 20–30 minute emergency fix.
Update your code to call `deepseek-v4-pro` or `deepseek-v4-flash` in 5 minutes to ensure long-term stability and access better cost-efficiency.
The Prompt
Refactor my current API integration script to use the new DeepSeek-V4 model endpoints. Current model: [INSERT_CURRENT_MODEL_CONFIG]. Target model: deepseek-v4-pro.
The legacy model names 'deepseek-chat' and 'deepseek-reasoner' will be discontinued on July 24, 2026. Transitioning to the explicit V4 model names now prevents future technical debt.
Source
Change Log | DeepSeek API Docs"The two legacy API model names, deepseek-chat and deepseek-reasoner, will be discontinued in three months (2026-07-24)."