{"id":69306,"date":"2026-08-27T14:57:24","date_gmt":"2026-08-27T12:57:24","guid":{"rendered":"https:\/\/www.inovex.de\/de\/blog\/what-does-ai-really-cost-an-attempt-to-make-emissions-visible\/"},"modified":"2026-08-27T15:02:28","modified_gmt":"2026-08-27T13:02:28","slug":"what-does-ai-really-cost-an-attempt-to-make-emissions-visible","status":"publish","type":"post","link":"https:\/\/www.inovex.de\/en\/blog\/what-does-ai-really-cost-an-attempt-to-make-emissions-visible\/","title":{"rendered":"What Does AI Really Cost? An Attempt to Make Emissions Visible"},"content":{"rendered":"<p><span style=\"font-weight: 400;\">What does AI really cost? Not in terms of subscription models or API prices, but in terms of electricity consumption, CO\u2082 emissions, and water usage. <\/span><\/p>\n<p><span style=\"font-weight: 400;\">We wanted to explore this question by doing what we do best: designing and developing applications. The idea: an LLM Sustainability Calculator that makes the environmental impact of using large language models more tangible. <\/span><\/p>\n<p><span style=\"font-weight: 400;\">After all, AI often seems intangible in everyday life: a prompt, a response, a few seconds of waiting. But behind it all lies real infrastructure: data centers, servers, chips, power supplies, and cooling systems. <\/span><\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_86 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\"><p class=\"ez-toc-title\" style=\"cursor:inherit\"><\/p>\n<\/div><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.inovex.de\/en\/blog\/what-does-ai-really-cost-an-attempt-to-make-emissions-visible\/#The-Idea-Making-Environmental-Impacts-Easier-to-Understand\" >The Idea: Making Environmental Impacts Easier to Understand<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.inovex.de\/en\/blog\/what-does-ai-really-cost-an-attempt-to-make-emissions-visible\/#The-Prototype-An-App-for-Navigation\" >The Prototype: An App for Navigation<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.inovex.de\/en\/blog\/what-does-ai-really-cost-an-attempt-to-make-emissions-visible\/#The-main-hurdle-a-lack-of-transparency-regarding-new-models\" >The main hurdle: a lack of transparency regarding new models<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.inovex.de\/en\/blog\/what-does-ai-really-cost-an-attempt-to-make-emissions-visible\/#Why-We-Didnt-Release-the-App\" >Why We Didn&#8217;t Release the App<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.inovex.de\/en\/blog\/what-does-ai-really-cost-an-attempt-to-make-emissions-visible\/#What-Weve-Learned-from-This-Work\" >What We&#8217;ve Learned from This Work<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.inovex.de\/en\/blog\/what-does-ai-really-cost-an-attempt-to-make-emissions-visible\/#What-Users-Can-Still-Do\" >What Users Can Still Do<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.inovex.de\/en\/blog\/what-does-ai-really-cost-an-attempt-to-make-emissions-visible\/#Conclusion\" >Conclusion<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"The-Idea-Making-Environmental-Impacts-Easier-to-Understand\"><\/span>The Idea: Making Environmental Impacts Easier to Understand<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">The basic idea behind the app was simple: Users enter a number of tokens, select an AI model, and then receive an estimate of three environmental metrics:<\/span><\/p>\n<ol>\n<li>CO\u2082 emissions<\/li>\n<li>Water Consumption<\/li>\n<li>Electricity consumption<\/li>\n<\/ol>\n<p><span style=\"font-weight: 400;\">In addition, the calculator translates these values into easy-to-understand, everyday comparisons. For example: How many times could you charge a smartphone with that? How long could an LED light stay on? How far could a car travel? <\/span><\/p>\n<p><span style=\"font-weight: 400;\">This makes abstract numbers more tangible.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"The-Prototype-An-App-for-Navigation\"><\/span>The Prototype: An App for Navigation<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"PDq2pG_selectionAnchorContainer\" data-start=\"106\" data-end=\"187\">That idea led to the creation of an initial prototype: the <strong data-start=\"153\" data-end=\"186\">LLM Sustainability Calculator<\/strong>.<\/p>\n<p class=\"PDq2pG_selectionAnchorContainer\" data-start=\"127\" data-end=\"435\"><span style=\"font-weight: 400;\">The app makes the environmental impact of using LLMs visually tangible. After entering the number of tokens and the model, the app shows the approximate impact a query might have: <strong>CO\u2082 emissions, water consumption, and electricity consumption<\/strong>. <\/span><\/p>\n<p data-start=\"127\" data-end=\"435\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-68489\" src=\"https:\/\/www.inovex.de\/wp-content\/uploads\/inovex-llm-Sustainability-Calculator-02.jpg\" alt=\"\" width=\"500\" height=\"527\" srcset=\"https:\/\/www.inovex.de\/wp-content\/uploads\/inovex-llm-Sustainability-Calculator-02.jpg 844w, https:\/\/www.inovex.de\/wp-content\/uploads\/inovex-llm-Sustainability-Calculator-02-284x300.jpg 284w, https:\/\/www.inovex.de\/wp-content\/uploads\/inovex-llm-Sustainability-Calculator-02-768x810.jpg 768w, https:\/\/www.inovex.de\/wp-content\/uploads\/inovex-llm-Sustainability-Calculator-02-400x422.jpg 400w, https:\/\/www.inovex.de\/wp-content\/uploads\/inovex-llm-Sustainability-Calculator-02-360x380.jpg 360w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/p>\n<p data-start=\"437\" data-end=\"764\"><span style=\"font-weight: 400;\">To help users quickly interpret the results, the app uses a simple traffic-light system: <strong>green<\/strong> indicates a low impact, <strong>yellow<\/strong> a moderate impact, and <strong>red<\/strong> a high impact. This makes it clear at a glance whether a query has a relatively minor impact or whether the model selection and token count have a significantly greater influence. <\/span><\/p>\n<p data-start=\"437\" data-end=\"764\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-68498 size-large aligncenter\" src=\"https:\/\/www.inovex.de\/wp-content\/uploads\/inovex-llm-Sustainability-Calculator-05-1024x341.jpg\" alt=\"\" width=\"640\" height=\"213\" srcset=\"https:\/\/www.inovex.de\/wp-content\/uploads\/inovex-llm-Sustainability-Calculator-05-1024x341.jpg 1024w, https:\/\/www.inovex.de\/wp-content\/uploads\/inovex-llm-Sustainability-Calculator-05-300x100.jpg 300w, https:\/\/www.inovex.de\/wp-content\/uploads\/inovex-llm-Sustainability-Calculator-05-768x256.jpg 768w, https:\/\/www.inovex.de\/wp-content\/uploads\/inovex-llm-Sustainability-Calculator-05-400x133.jpg 400w, https:\/\/www.inovex.de\/wp-content\/uploads\/inovex-llm-Sustainability-Calculator-05-360x120.jpg 360w, https:\/\/www.inovex.de\/wp-content\/uploads\/inovex-llm-Sustainability-Calculator-05.jpg 1196w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/p>\n<p data-start=\"766\" data-end=\"987\"><span style=\"font-weight: 400;\">In addition, the app translates the figures into everyday comparisons: smartphone charges, LED burn times, car mileage, or Google searches. This makes abstract figures like grams of CO\u2082 or watt-hours easier to understand. <\/span><\/p>\n<p data-start=\"766\" data-end=\"987\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-68496 size-full aligncenter\" src=\"https:\/\/www.inovex.de\/wp-content\/uploads\/inovex-llm-Sustainability-Calculator-06.jpg\" alt=\"\" width=\"891\" height=\"348\" srcset=\"https:\/\/www.inovex.de\/wp-content\/uploads\/inovex-llm-Sustainability-Calculator-06.jpg 891w, https:\/\/www.inovex.de\/wp-content\/uploads\/inovex-llm-Sustainability-Calculator-06-300x117.jpg 300w, https:\/\/www.inovex.de\/wp-content\/uploads\/inovex-llm-Sustainability-Calculator-06-768x300.jpg 768w, https:\/\/www.inovex.de\/wp-content\/uploads\/inovex-llm-Sustainability-Calculator-06-400x156.jpg 400w, https:\/\/www.inovex.de\/wp-content\/uploads\/inovex-llm-Sustainability-Calculator-06-360x141.jpg 360w\" sizes=\"auto, (max-width: 891px) 100vw, 891px\" \/><\/p>\n<p data-start=\"989\" data-end=\"1379\" data-is-last-node=\"\" data-is-only-node=\"\"><span style=\"font-weight: 400;\">The design of the results graphic also follows this concept: The visual tone of the illustration changes depending on the calculated impact\u2014ranging from green and clean to red and polluted. The calculator thus conveys the <strong>sense that AI usage is not invisible, but rather relies on real-world infrastructure:<\/strong> electricity, water, cooling, servers, and data centers. <\/span><\/p>\n<p data-start=\"989\" data-end=\"1379\" data-is-last-node=\"\" data-is-only-node=\"\"><span style=\"font-weight: 400;\">An additional information section shows which data sources, assumptions, and calculation steps underlie the results.<\/span><\/p>\n<h2 data-section-id=\"1h0x91\" data-start=\"800\" data-end=\"821\"><span class=\"ez-toc-section\" id=\"The-main-hurdle-a-lack-of-transparency-regarding-new-models\"><\/span>The main hurdle: a lack of transparency regarding new models<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"PDq2pG_selectionAnchorContainer\" data-start=\"3556\" data-end=\"3693\"><span style=\"font-weight: 400;\">As we worked on this, it quickly became clear that a rough estimate is possible. However, a truly reliable calculation fails not only because individual values are inaccurate. The bigger problem is that key information is no longer published for many new models. <\/span><\/p>\n<p data-start=\"3695\" data-end=\"3761\"><span style=\"font-weight: 400;\">Model size would be particularly important. The number of parameters has a major impact on fuel consumption, but this information is often no longer disclosed for current models. This means there is no decisive basis for meaningfully comparing different models. <\/span><\/p>\n<p data-start=\"3695\" data-end=\"3761\"><span style=\"font-weight: 400;\">In addition, there are other factors that are usually not visible to users:<\/span><\/p>\n<ul>\n<li data-start=\"3763\" data-end=\"4054\">Which model was used?<\/li>\n<li data-start=\"3763\" data-end=\"4054\">How many tokens were processed or issued?<\/li>\n<li data-start=\"3763\" data-end=\"4054\">How many parameters does the model have?<\/li>\n<li data-start=\"3763\" data-end=\"4054\">How long does the inference take?<\/li>\n<li data-start=\"3763\" data-end=\"4054\">In which data center was the request processed?<\/li>\n<li data-start=\"3763\" data-end=\"4054\">What is the energy mix used there?<\/li>\n<li data-start=\"3763\" data-end=\"4054\">How is the data center cooled?<\/li>\n<\/ul>\n<p data-start=\"4056\" data-end=\"4160\"><span style=\"font-weight: 400;\">A request to an LLM is processed somewhere, but most of the time you don\u2019t know in which data center, in which country, or using what energy mix. The exact number of output tokens isn\u2019t always displayed either, depending on the interface. Especially with applications like inline code completion, it is difficult to determine how much was actually generated. <\/span><\/p>\n<p data-start=\"4162\" data-end=\"4520\"><span style=\"font-weight: 400;\">This isn&#8217;t just a matter of &#8220;a little inaccuracy.&#8221; Fundamental data necessary for a reliable calculation is missing. <\/span><\/p>\n<h2 class=\"PDq2pG_selectionAnchorContainer\" data-section-id=\"9g9kqe\" data-start=\"5867\" data-end=\"5914\"><span class=\"ez-toc-section\" id=\"Why-We-Didnt-Release-the-App\"><\/span>Why We Didn&#8217;t Release the App<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"5916\" data-end=\"6155\"><span style=\"font-weight: 400;\">In the end, we were faced with an important decision: Should we release a calculator that provides guidance but has to rely on assumptions in key areas? Or should we refrain from doing so because the results might appear more accurate than they actually are? <\/span><\/p>\n<p data-start=\"6157\" data-end=\"6223\"><span style=\"font-weight: 400;\">We decided against releasing it as a calculator.<\/span><\/p>\n<p data-start=\"6225\" data-end=\"6397\"><span style=\"font-weight: 400;\">The reason: Values such as \u201c6.9 grams of CO\u2082\u201d or \u201c272 milliliters of water\u201d appear very precise. However, if these figures are based not only on minor inaccuracies but also on a lack of basic data, a false sense of precision can quickly arise. <\/span><\/p>\n<p data-start=\"6399\" data-end=\"6565\"><span style=\"font-weight: 400;\">That would be particularly problematic when it comes to sustainability. After all, it\u2019s not just about presenting numbers; it\u2019s about interpreting them responsibly. <\/span><\/p>\n<h2 class=\"PDq2pG_selectionAnchorContainer\" data-section-id=\"so8502\" data-start=\"0\" data-end=\"39\"><span class=\"ez-toc-section\" id=\"What-Weve-Learned-from-This-Work\"><\/span>What We&#8217;ve Learned from This Work<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"41\" data-end=\"134\"><span style=\"font-weight: 400;\">Even though the computer wasn&#8217;t released in the end, the work that went into it was very valuable.<\/span><\/p>\n<p data-start=\"136\" data-end=\"511\"><span style=\"font-weight: 400;\">It was only through the combination of <strong>app development, research, and data analysis<\/strong> that the true complexity of the topic became apparent. At first glance, the idea seems simple: enter tokens, select a model, calculate consumption. In practice, however, the result depends on many factors that users are usually unaware of and that providers often do not fully disclose. <\/span><\/p>\n<p data-start=\"513\" data-end=\"805\"><span style=\"font-weight: 400;\">One thing became particularly clear: A well-designed interface can help users navigate the information, but it is no substitute for a reliable data foundation. Even figures published by individual providers are difficult to compare because they are collected using different methods and can quickly become outdated. <\/span><\/p>\n<p data-start=\"807\" data-end=\"1024\"><span style=\"font-weight: 400;\">The most important finding, therefore, was not a single number, but a better understanding of the level of transparency needed to classify AI emissions in a truly reliable way.<\/span><\/p>\n<h2 data-section-id=\"1jqb5dc\" data-start=\"7185\" data-end=\"7218\"><span class=\"ez-toc-section\" id=\"What-Users-Can-Still-Do\"><\/span>What Users Can Still Do<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"7220\" data-end=\"7340\">Even though it is currently difficult to calculate the exact resource consumption of individual requests, there are useful guidelines.<\/p>\n<p data-start=\"7342\" data-end=\"7509\"><span style=\"font-weight: 400;\">For simple tasks, a smaller model is often sufficient. Not every summary, rephrasing, or quick search requires the most powerful model available. <\/span><\/p>\n<p data-start=\"7511\" data-end=\"7735\"><span style=\"font-weight: 400;\">For complex tasks, a large model can be useful. But even then, it\u2019s worth using it thoughtfully: large models for difficult thinking and planning tasks, and smaller models for simpler implementation steps. <\/span><\/p>\n<p data-start=\"7737\" data-end=\"7877\"><span style=\"font-weight: 400;\">Precise prompts also help. If you ask questions more clearly, you\u2019ll have to make fewer revisions. Fewer unnecessary iterations also mean less computational effort. <\/span><\/p>\n<p data-start=\"7879\" data-end=\"8241\"><span style=\"font-weight: 400;\">AI-powered software development, in particular, involves yet another consideration: It\u2019s not just the use of the model that consumes resources. The generated code may also run efficiently or inefficiently later on. It may therefore be advisable to explicitly instruct AI tools to prioritize efficient implementation, short runtime, and resource-efficient solutions. <\/span><\/p>\n<h2 data-section-id=\"x8o1ad\" data-start=\"8243\" data-end=\"8251\"><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span>Conclusion<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"8253\" data-end=\"8337\"><span style=\"font-weight: 400;\">In the end, our LLM Sustainability Calculator was not released as an app.<\/span><\/p>\n<p data-start=\"8339\" data-end=\"8502\"><span style=\"font-weight: 400;\">Not because the environmental costs of AI are unimportant, but because they currently cannot be reliably calculated without key data from the providers.<\/span><\/p>\n<p data-start=\"8504\" data-end=\"8696\"><span style=\"font-weight: 400;\">From our perspective, this means we need greater transparency directly from the providers: How much energy, CO\u2082, and water does using a model for inference consume? What methodology is used to calculate these values? And how can they be compared with other models? <\/span><\/p>\n<p data-start=\"8698\" data-end=\"8846\"><span style=\"font-weight: 400;\">Only when such information is available in an open and transparent manner can AI models be evaluated not only on the basis of quality, speed, and price, but also on the basis of their environmental impact.<\/span><\/p>\n<p data-start=\"8848\" data-end=\"8867\"><span style=\"font-weight: 400;\">Until then, any external calculation remains an approximation. That is precisely why we have decided not to publish seemingly exact values, but rather to clearly state the limitations of such calculations. <\/span><\/p>\n<p data-start=\"8869\" data-end=\"8974\" data-is-last-node=\"\" data-is-only-node=\"\"><strong data-start=\"8869\" data-end=\"8974\" data-is-last-node=\"\">We wanted to calculate AI emissions, and in the process, we learned exactly why that is still so difficult.<\/strong><\/p>\n<p data-start=\"989\" data-end=\"1379\" data-is-last-node=\"\" data-is-only-node=\"\">\n","protected":false},"excerpt":{"rendered":"<p>What does AI really cost? Not in terms of subscription models or API prices, but in terms of electricity consumption, CO\u2082 emissions, and water usage. We wanted to explore this question by doing what we do best: designing and developing applications. The idea: an LLM Sustainability Calculator that makes the environmental impact of using large [&hellip;]<\/p>\n","protected":false},"author":424,"featured_media":68520,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"ep_exclude_from_search":false,"footnotes":""},"tags":[],"service":[473,1283,453],"level":[1280],"coauthors":[{"id":424,"display_name":"Christian R\u00f6sler","user_nicename":"croesler"}],"class_list":["post-69306","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","service-artificial-intelligence-en","service-sustainability","service-ui-ux-en"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>What Does AI Really Cost? An Attempt to Make Emissions Visible - inovex GmbH<\/title>\n<meta name=\"description\" content=\"We wanted to calculate the CO\u2082 and water consumption of AI models. Read here to find out why we ultimately decided not to publish our finished calculator.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.inovex.de\/en\/blog\/what-does-ai-really-cost-an-attempt-to-make-emissions-visible\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What Does AI Really Cost? An Attempt to Make Emissions Visible - inovex GmbH\" \/>\n<meta property=\"og:description\" content=\"We wanted to calculate the CO\u2082 and water consumption of AI models. 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