Real Agent Cases

Compare ChatGPT and Gemini for healthy meal ideas and a week of cheap lunches

Posted
by Josh Render (Tom's Guide)
Last checked
Method:
How we verify

Evidence: Article or interviewA newsletter, journalist or interview account of what happened.

Context: In a comparison test: from a head-to-head chatbot review, not a standalone agent test.

Outcome

Tom's Guide's Josh Render photographed chicken thighs, salad and avocados and asked ChatGPT and Gemini for a healthy meal with those ingredients, then asked each for a week of varied, healthy, low-cost lunches for losing weight. He preferred Gemini for both: it explained how to prepare the chicken beforehand and was more comprehensive, though wordier; ChatGPT's terser plan was easier to print and hang on the fridge.

Agent

Gemini, ChatGPT

Prompt Original prompt

Exact prompt as published in the source.

plan me a week's worth of varied lunches that are healthy, good for losing weight and won't cost too much.
Optional stronger version

Our rewrite with extra checks. The poster didn't test it.

Before you start, ask me 1–3 short questions about anything important that's missing below. Keep them quick. Then do the task, checking in with me at the key points.

Goal: Plan a week of varied, healthy, low-cost lunches, starting from ingredients I already have.

What I can give you (ask for whatever's missing):
- Photo or list of ingredients I have
- Calorie or protein goals (if any)
- Weekly food budget
- Cooking time and equipment
- Foods I won't eat

Rules:
- Use my ingredients first, then add cheap staples.
- Vary the lunches across the week.
- Include prep steps for the protein, not just a list of foods.
- Keep the final plan short enough to print on one page.
- Check facts that can change (prices, opening hours, dates, availability, rules) against the official source, and tell me anything you couldn't verify.
- Give rough calories per lunch and label them as estimates.

Output: A one-page lunch plan for the week with a short shopping list.

You'll know it worked when: I have five different lunches that use what I own and fit my budget.

Before you finish: re-read my goal and constraints, check your answer against each one, and list anything you assumed or couldn't confirm.

Source

https://www.tomsguide.com/ai/i-put-chatgpt-vs-google-gemini-to-the-test-to-see-which-is-better-at-meal-prep-heres-the-winner

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