Gemini Model Selection: Match the Model to the Task
Product details checked: 4 October 2026

Prompt
Help design an evaluation for [task]. Inputs are [formats]. Success requires [criteria]. Propose normal, ambiguous, and edge cases, a scoring rubric, and a rule for escalating difficult cases. Do not invent benchmark results.

Review
- The selected option is available in the product you use.
- Evaluation cases represent real work.
- Preview and generally available models are not conflated.

Practice
Create five source-based rewriting tasks with answers you can judge. Include a deadline that must remain unchanged, an ambiguous request, a contradiction, a short list that must retain every item, and a passage requiring a specified reading level. Use the same inputs and rubric for each available option. Record each failure and the time spent repairing it. Do not invent measurements for models you could not access. The winner for this small workflow is the option that meets your criteria consistently, with limitations stated.

Official resources
https://ai.google.dev/gemini-api/docs/models
https://blog.google/innovation-and-ai/technology/ai/google-ai-updates-september-2026/

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