Custom AI · Apr 2025 · 7 min read

Choosing the Right LLM for Your Business Use Case

Choosing the Right LLM for Your Business Use Case

The temptation is to reach for the biggest, most famous model for everything. But the right choice depends on the task — and the wrong one costs you in speed, money, or accuracy.

Start with the task, not the model

Summarizing tickets, extracting fields, and drafting proposals are different jobs with different needs. Define the task precisely before comparing models.

Balance quality, cost, and latency

A larger model may be more accurate but slower and pricier. For high-volume, simple tasks, a smaller, faster model often wins on the metrics that matter.

Consider privacy and deployment

Some data cannot leave your environment. Private or self-hosted models let you keep sensitive information in-house while still benefiting from AI.

Evaluate on your own data

Public benchmarks are a starting point, not an answer. The only test that matters is how a model performs on your real tasks and your real data.

Key takeaways

  • Define the task before choosing a model.
  • Balance quality, cost, and latency.
  • Weigh privacy and deployment needs.
  • Evaluate models on your own data.
Choosing the Right LLM for Your Business Use Case | Atlantic AI Works