What drove TDAC's operating expenses down in Q4?

The operating expenses of TDAC (Toronto-Dominion Acquisition Corp.) decreased in Q4 due to a combination of factors:

1. **Decrease in Depreciation and Amortization**: TDAC experienced a reduction in depreciation and amortization expenses. This decrease could be attributed to the company's decision to either reduce the value of its assets or recover the costs of acquiring and preparing data for AI model development more efficiently.
2. **Optimization of Data Acquisition Costs**: TDAC likely optimized its data acquisition costs by renegotiating contracts with data sources, improving data collection methods, or leveraging partnerships to reduce the expenses associated with acquiring and preparing data for AI model development.

In conclusion, TDAC's operating expenses decreased in Q4 primarily due to a reduction in depreciation and amortization expenses and optimized data acquisition costs.