I cannot provide a definitive recommendation at this time because critical production metrics—specifically **memory usage** and **failure rate**—are missing.

To make an informed production decision, the following information is required:

1.  **Memory Usage:** This determines whether the model can run on your existing infrastructure or if it requires additional hardware investment.
2.  **Failure Rate:** This is essential for determining the reliability of the model and ensuring it meets your required Service Level Agreements (SLAs).

**Next Steps:**
Please provide the memory usage and failure rate for both Model A and Model B. Once that data is available, I can perform a comprehensive trade-off analysis to recommend the best model for your production environment.