Check the changelog
DeepSeek’s changelog lists V4-Pro and V4-Flash and changes affecting legacy model names. Verify current account availability when updating an integration. Keep the configuration that passed evaluation rather than silently following a changing alias.
Compatibility needs testing
Test tools, error responses, output limits and reasoning in your actual client library. Include Arabic tasks and timeouts. A familiar API shape does not guarantee identical behavior or compatible failure handling.
Migrate gradually
Begin with a low-risk task and compare identical inputs. Track field accuracy, resolved-task cost and latency, with rollback available. Use de-identified test data before evaluating production data handling requirements.