A school administrator is choosing models for different tasks. Select the two pairings that best align model with task.

Answer: A and C — A fast, lower-cost model to tag hundreds of parent emails by topic. / A more capable model to draft a response plan balancing safeguarding policy, legal advice and parent concerns.

High-volume simple tagging fits a fast, low-cost model (a), and nuanced reasoning across competing constraints fits a more capable model (c). The top model for a trivial spelling fix (b) wastes time and cost. The cheapest model for a complex, high-stakes analysis (d) under-serves the task.