Question:

Does Sharpie make a pen that can be used for writing letters?

Scores:

openai: 9 gemini: 10 claude: 8.5 cohere: 10

Answer:

openai / gpt-4o-mini
Score: 9
Yes, Sharpie offers pens designed for writing letters. The Sharpie S-Gel and Sharpie Pen are popular choices for this purpose. The Sharpie S-Gel features a smooth, gel ink that dries quickly and is great for everyday writing, ensuring a clean and consistent line. The Sharpie Pen, on the other hand, uses water-based ink that provides fine lines without bleeding, making it suitable for writing letters and other documents. Both options are available in various point sizes and colors, allowing for personal preference in letter writing. Thus, Sharpie makes multiple pen types that are effective for this use.

Graders:

gemini / gemini-2.5-flash
Score: 10
The answer is factually accurate, complete, and highly relevant to the question. It correctly identifies Sharpie S-Gel and Sharpie Pen as suitable options, accurately describes their ink types (gel and water-based, respectively), and highlights their key features like quick-drying, smooth lines, and non-bleeding properties. There are no errors or bad information present.
anthropic / claude-sonnet-4-5-20250929
Score: 8.5
The answer is factually accurate and relevant. Sharpie does make the S-Gel pen with gel ink that dries quickly and is suitable for writing. Sharpie also makes the Sharpie Pen (liquid ink pen) that uses ink appropriate for everyday writing. Both products exist and can be used for letter writing. The answer correctly notes they come in various point sizes and colors. The description of the S-Gel having smooth gel ink is accurate. The only minor issue is that the characterization of the Sharpie Pen's ink as specifically 'water-based' and the emphasis on 'no bleeding' could be slightly misleading - while Sharpie pens generally don't bleed through standard paper, some formulations may show minor bleed-through on thin paper. Overall, this is a solid, helpful answer with only very minor room for clarification.
cohere / command-r-plus-08-2024
Score: 10
The answer is factually accurate and comprehensive. It mentions two specific Sharpie products, the Sharpie S-Gel and Sharpie Pen, which are indeed suitable for writing letters. The description of each pen's features is correct and relevant, highlighting the quick-drying gel ink of the S-Gel and the non-bleeding water-based ink of the Sharpie Pen. The response also covers the variety of point sizes and colors available, allowing users to choose according to their preferences. No errors or misleading information were found in the answer.
Scores are 0–10. The selected AI’s score is a self-rating.