Very little. According to a measurement by Hugging Face researchers published in January 2026, a thank-you consumes 0.245 Wh on an open model, including the model's answer; we found no measurement for ChatGPT. 1 thank-you per day for a year adds up to 39 gCO2e with global average electricity, according to our calculation, or 270 metres by car. About 370 thank-yous use as much energy as a single generated video of 5 seconds.
Read the source article: How to reduce the environmental impact of using AI: 10 ways