Over the past few weeks we have rolled out Yesper 4, with even better support for creating files, a connection to your email, Yesper on your phone, a smarter voice mode and much more. Yesper is also faster than ever. Simple questions are answered in a few seconds, and the big tasks take half as long.²
Yesper is built to take you from grain to loaf: from idea to finished deliverable. That is why Yesper works with files in a constantly growing number of formats, calculates, and hands back a file you can open in your own programs.
The decision brief ahead of the tender, as two pages in Word. The review, back with tracked changes. The quantities from the IFC model as Excel, the presentation for the steering group in your brand. Variation orders in your template, with amounts and justification. The cost coding of the invoices, reconciled in Excel.
Yesper 4 introduces several new file formats. Combine two models into one shared IFC and print it on the 3D printer. The sampling points and soil layers in a table become a model of the ground, with the right levels and one color per soil type. A new slope is added to the road model, and back comes a file that Novapoint imports. The coordinates in an appendix become a map layer for the GIS program.
Yesper users now create two new documents a week on average.
Yesper now plans whole projects or parts of them, adjusts schedules, finds the activities that have stalled, and updates in Excel or in files for Microsoft Project and Primavera P6. Size does not matter: anything from ten activities to a multi-year schedule with thousands.
Start the task and let Yesper work while you sit in your next meeting. Close the tab, or the computer. Yesper tells you when it is done.
Yesper now handles even more and even larger files, and runs even longer.
Correct Yesper once and it remembers from then on, for you or for the project.
Say that quantities are to be reported per building part, or that the minutes should follow a certain form. Yesper saves it, and the next task in the project follows it, whoever starts it. What only concerns you, such as how long you want your answers, follows you between projects and is not visible to others.
Yesper makes thousands of adjustments to itself every month. One in three users has given Yesper a task that turned out better, faster, because it had learned something from a colleague. What used to sit in the head of the most experienced person in the project is now in the project, for everyone.
Yesper also knows what your colleagues have done in the project since last time, and starts from the latest version of every document. The more of the project that is carried out in Yesper, the lower the risk of errors.
When Yesper knows your goals and your requirements, you can do more without steering every step. What Yesper learns at your company stays at your company.
If you want to make a whole way of working the project's own, do the task once and tell Yesper to save what you did as a skill. Or use the guided mode "Teach Yesper something new". You choose whether the skill is your own, the project's or the whole company's.
The next time someone asks for something similar, Yesper uses the skill, so the result always follows your guidelines and definitions. For example a cost coding of invoices that the whole company shares, or a check of the tender documents before the bid work begins.
Most of what is called AI is built for individual work. Yesper is built for the project, for collaboration.
Connect your Microsoft 365 account and let Yesper work with everything that happens around the project: email, the calendar, transcripts from Teams, notes in OneNote and your shared tender mailbox. Do a morning check and see everything that has happened and how it affects the project, with drafts of the changes that need to be made. You can also let Yesper write drafts of email replies.
You choose what Yesper gets access to, inbox by inbox, and everything is checked automatically against built-in security requirements.
Yesper writes engineering reports that reach 97 percent, measured against real assignments in construction and infrastructure. The best general AI models reach around 80.¹ We achieve this through a large number of adaptations and a framework that improves every week. Most of it you never see, other than in answers that are more correct and more useful.
One example. At difficult decision points Yesper brings in an AI advisor that gives a second opinion. The advisor acted more than a thousand times in September. We got the idea for it from AI research presented this past summer. We put it into operation the week after. We are at the forefront of applied AI, so that you always have the best AI on the market for what you need to do.
Larger questions now run up to twice as fast as they did this past summer.² Half of the answers in Max are done in 1.7 minutes, against 4.1 before. Simpler questions now take a few seconds.²
Yesper now comes in dark mode. The original mode remains the default and is now called light mode. Drawings stay white, so they do not look like X-rays.
Yesper now works even better on your phone, at the same web address as on the computer. Log in and see everything that has happened, start new tasks and read documents. Type, or use the new, smarter voice mode. Dictate the task on your way to the site, read the answer by the coffee machine.
See the finished result when all you have is flat drawings and descriptions in text. Yesper visualizes photorealistically, in watercolor or however you like. Ask it to show how the shadows fall on an afternoon in October, how the snow settles on a crisp winter day, or just the groundworks, with correct elevations.
You can now see how much each user uses Yesper. You can also get help giving everyone the license level that fits. You pay no more than you need to, while everyone can still get their job done. You approve Yesper's suggestions with one click.
It is now possible to tie costs to departments. Contact us and we will create the departments. After that you move users freely between them.
Yesper 4 is the best thing we have built. It is already running in your account, for everything you rely on every day. Every week Yesper delivers thousands of drafts and answers to designers, estimators, bid managers, site managers and everyone else who builds the world.
Follow product updates as they ship at yesper.ai/updates.
¹ Six types of engineering report, the same source material the consultant had, 27 to 33 control points per report. Models compared: Claude Opus 5.5, 83 percent, and GPT-6 Astra, 75 percent, run on 5 October and 6 September 2026.
² Response times in real projects. Larger questions: the same tasks measured before and after 28 September, 12.2 minutes became 5.5. Max: half of the answers done within 1.7 minutes from 28 September to 7 October, against 4.1 minutes from 1 to 27 September. Simple questions: a search in the project's files took 17 seconds on average in our test on 4 October, against 72 seconds before.
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Yesper is the AI civil engineer for construction and infrastructure. AFRY, COWI, NRC Group and other Nordic firms use it to halve the time on a study, rerun calculations in minutes, and catch errors that would otherwise slip through. Get in touch if you'd like to see what it can do for you.
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