shared pitfalls
A no-cost test can answer a narrow question, but it does not establish that an option will support your everyday workload.
or
Option 1
You need repeatable results across several prompts.
Keep a small test set and record the model name and settings.
A good answer to one prompt says little about consistency. Models, defaults, and community demos can change, so save enough context to repeat the test.
or
Option 2
You plan to paste sensitive text.
Remove private details or use a suitable local workflow.
Hosted tools and public demos can have different data-handling practices. A free label does not tell you who receives the prompt or how long it is retained.
or
Option 3
You need an integration rather than a one-off chat.
Verify the exact endpoint, model, limits, and error behavior first.
A browser demo proves that an interface works for a visitor; it does not prove that an API is available or reliable for an application.