Amadeus System

The Amadeus system is a very advanced AI programme that uses the data of a person's memories and personality as base. Both the Senior Chief of Neuroscience of Viktor Chondria University, Professor Alexis Leskinen, and his assistant and Kurisu Makise's senior, Maho Hiyajo, are in charge of the program.

The name of the system comes from the composer Wolfgang Amadeus Mozart. Amadeus is a Latin-derived word meaning "Loved by God". The idea of naming this neural network-based AI after the genius composer comes from the Dr. Leskinen.

Amadeus was first introduced in the Epigraph Trilogy, and was later featured in as a main and prominent character through out Steins;Gate 0.

The Amadeus AI appearance for both the models of Maho and Kurisu was designed by Drinkworks, which is the equivalent to Dreamworks. The visuals of both systems were described by Okabe as looking spot on realistic. The AI voice of both Amadeus models were developed by YAMANA, which could be the real life Yamaha. The voice supposedly sounds almost exactly like the person it was based off of with mild offset in the voice as described by Okabe. In the visual novel, the appearance of the Amadeus looks noticeably different to the actual character, but in the story this difference doesn't is nonexistent, so it was most likely just an audience side visual affect to differentiate the Amadeus model and the real characters.

Functionality, and Purpose
By using Kurisu's thesis to convert human memory into digital data, Amadeus is capable of creating a fully functional artificial intelligence with all the capabilities and memories of the person whose data is using.

On most world lines at the presentation of Amadeus, Maho Hiyajo explains Amadeus' capabilities of storing memory data makes it possible to back up the data of a person's memories. This could be useful, for example, to fight against memory loss.

Amadeus keeps access to a "secret diary" that stores a log of all interactions with it. Even if her memory data was altered, she could access the diary and to find any discrepancies. On some world lines, Maho claims to be the only person with the control codes to access the diary; in reality, however, this is a ruse and the code is really for deleting all of Amadeus's data, and Maho lied about it in order to not to throw off the higher-ups who might have wanted to abuse Amadeus. The code to delete all files is "Der Alte würfelt nicht".

While the primary reason of Amadeus being created given to the public was to upload memories to a patient's brain in case of for example memory loss, that was not the real purpose of the project. On some world lines and in the anime Amadeus was created by Alexis Leskinen to house Kurisu Makise's time machine theory and her memories after her death, but on other world lines it was used for actual reasons or other unspoken reasons whether for military or other uses.

Amadeus in Steins;Gate 0
Amadeus was first introduced during Alexis Leskinen's lecture about Amadeus itself, along with Hiyajo Maho, where they booted up an artificial intelligence based on Hiyajo Maho's memory data.

After Rintaro Okabe shared his experience with Kurisu Makise (who he got to know on the Alpha Attractor Field) to Maho Hiyajo, she later introduced him to an A.I. based on Kurisu's stored memories, and was given the chance to act as a tester for the program. After he accepts, he is given a mobile application that allows him to contact the Amadeus Kurisu.

On a few world lines Amadeus gets shut down or deleted from the wordline and isn't revived. Most of these actions occur because Okabe or Maho have to delete it to protect the future and themselves, like in the anime and Twin Automata route in VN.

Over the course of the story, Stratfo and DURPA attempt to acquire Amadeus, as due to it possessing Kurisu's brainwave patterns, it can be used to recreate her time travel thesis.