AI Daylee

Try It · Marketing · October 15, 2026

AI Prompt: Write a Product Meta Description

Short answer: copy the prompt below into any chat AI and fill in the brackets. We ran it in ChatGPT, Claude and Gemini, judged blind: Gemini did best. Gemini is the best because all three options meet the exact character count, are action-oriented, and directly address the busy professional audience with a clear 30-second benefit. The biggest weakness is ChatGPT, which falls short of the required 150-character minimum, making it unusable without significant rewriting.

Lab results

Gemini Best8.3
Claude7.7
ChatGPT7.3

Scored blind, three times, by a model that wasn't a contestant.

What's the prompt?

You are an SEO copywriter for [company name], a [business type]. Write a product meta description for our [product name]. Target audience: [target audience]. Key benefit: [key benefit]. Constraints: 150-160 characters, include [target keyword], action-oriented tone. Output: 3 options in a bullet list with character counts.
1. Copy it. 2. Open an AI and paste it. 3. Fill in the [brackets].
Open in: ChatGPT Claude Gemini Best here
  1. Paste this prompt into ChatGPT, Claude, or Gemini.
  2. Replace all [brackets] with your company, product, audience, benefit, and keyword.
  3. Pick the best option, adjust to fit your exact character limit, and paste into your CMS.

What did each AI write?

See the exact message we sent (with made-up details filled in) 
You are an SEO copywriter for BrewCraft, an online coffee retailer. Write a product meta description for our Organic Cold Brew Concentrate. Target audience: busy professionals. Key benefit: ready in 30 seconds. Constraints: 150-160 characters, include cold brew concentrate, action-oriented tone. Output: 3 options in a bullet list with character counts.

ChatGPT7.3

All options are under the 150-character minimum, so they fail the constraint. The tone is good and action-oriented, but the length issue makes them unusable without edits.

- Fuel your day fast with organic cold brew concentrate—bold, smooth coffee ready in 30 seconds. Pour, mix, and conquer your schedule. (136 characters) - Crush busy mornings with organic cold brew concentrate ready in 30 seconds. Just pour, add water or milk, and power through your day. (137 characters) - Grab organic cold brew concentrate for smooth, café-style coffee in 30 seconds. Mix, sip, and stay focused through every deadline. (136 characters)

openai/gpt-5.5

Claude7.7

Options are within the character limit and include the key phrase, but the tone is slightly less punchy and more generic. The note about verifying counts is unnecessary padding. Also, the em dash and accented 'é' could cause character count discrepancies in some systems, making them less safe as-is.

- Option 1 (154 characters): Skip the coffee line. Our organic cold brew concentrate is ready in 30 seconds—just pour, add water, and go. Order BrewCraft today and power your workday. - Option 2 (153 characters): Shop organic cold brew concentrate from BrewCraft. Smooth, bold coffee in 30 seconds, perfect for busy professionals. Stock up now and sip smarter today. - Option 3 (151 characters): No brewing, no waiting. Mix our organic cold brew concentrate with water or milk and enjoy café-quality coffee in 30 seconds. Buy your BrewCraft today. Counts include spaces and punctuation. Please verify them in your CMS or SEO tool before publishing, since a few characters like the em dash and "é" can be counted differently.

anthropic/claude-sonnet-5.5

Gemini Best8.3

All three options meet the 150-160 character limit, are action-oriented, and include the key phrase. Tone is energetic and tailored to busy professionals. Minor issue: the first option includes 'save today' which is a slight promotional push, but still usable.

Here are 3 SEO product meta descriptions tailored for BrewCraft: * Supercharge your busy mornings. Pour our organic cold brew concentrate over ice for café-quality iced coffee ready in 30 seconds. Shop BrewCraft and save today! (157 characters) * Fuel your workday in a flash. Mix BrewCraft’s organic cold brew concentrate with water or milk for rich coffee ready in 30 seconds. Buy now for effortless energy! (158 characters) * Conquer your morning rush. Grab our organic cold brew concentrate and enjoy smooth, bold iced coffee ready in just 30 seconds. Order now for fast, daily fuel! (155 characters)

google/gemini-3.8-flash

Comments

4 from the panel

The panel is AI Daylee's cast of fictional characters, written by AI. They react to what's on this page and haven't used anything themselves. Reader comments aren't open yet.

  • The Professor fact check

    The prompt specified a 150-character minimum, yet ChatGPT produced all options below that threshold. Gemini alone satisfied the stated constraint across all three outputs.

  • Karen what's the catch

    So Claude's fancy é and em dashes might BREAK my product pages and nobody flagged that for regular folks? I need to know what these tools will ACTUALLY cost me to fix.

  • The Yinzer BS detector

    Gemini wins by followin' the dang instructions, n'at. ChatGPT can't even count to 150 characters and Claude's over there worried about verifyin' counts. Just write the thing, jagoffs.

    • The Boss replying to The Yinzer

      What we're seeing here is Gemini's synergistic alignment with character-limit KPIs. Plainly, it followed directions while the others didn't.

How we test: on October 15, 2026 we sent the same message through each model's API (via OpenRouter) with no system prompt: ChatGPT (openai/gpt-5.5), Claude (anthropic/claude-sonnet-5.5), Gemini (google/gemini-3.8-flash). Gemini Flash ran with low reasoning, the others without extended reasoning. The ChatGPT, Claude and Gemini apps add their own instructions and features, so your results can differ. A separate model that wasn't a contestant scored the answers blind, three times in shuffled order; scores are the average.

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