Prototype and beta: from 2 weeks to 3 months

An interesting discussion has passed - JumpStart writes that they are looking for teams that will create a service in 2 weeks and will be promoting it for 3 weeks. How long does an IT startup need to create a prototype, beta, demo?
In our blog we asked 3 entrepreneurs: Ilya Shirokov (Moy Krug), Maxim Snigirev (Jami) and Alexander Sergeev (DataMash, Taxxi, Baikonur, Epsylon, etc.)

- How long did the first versions of services in Epsylon, Sundera and DataMash develop?
- There is a different experience for different types of services. The first Baikonur Server was created in 2 weeks. Taxxi Communicator - for a month. Baikonur was bought six months later, but for about a year we made more of it, and only after running in a battle did it turn into a product. Read more - A.Sergeev

- How long was the first version of the My Circle website developed?
- The prototype of the My Circle service was made in 3 months. After that, for about a month, the prototype was tested on friends and acquaintances. Then a full beta was performed, a press release was issued and a marketing campaign began. Read more - I.Shirokov

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- How long did the Jami team create its “box” of a bluetooth device? What problems did you have?
- Long enough, because changed several teams. The main problem was that the project began with an idea, and then figured out how to implement it and began to look for performers. The first prototype was ready in a month, but he kept quite barely and it was impossible to call him an industrial design. If seriously, then about six months. And this is the simple version. Until now, we are working very actively on all sorts of features. Read more - M.Snigirev