arrow-up icon

Frequently Asked Questions

deco-blob-3 decoration

About Fixstars Amplify Usage

Fixstars Amplify requires an internet connection and installation of Fixstars Amplify SDK in a Python-ready environment. For more details, see Quick Startdecoration.

Install Fixstars Amplify SDK (free download) into your development environment. Sign up and obtain a free Token to access Fixstars Amplify AE. A token is associated with the user account that is logged in. 32-digit alphanumeric number of the token that you have obtained can be found on the Access Token page after you log in.

Currently, the WSL environment is supported on Windows. If you do not have a WSL environment, we recommend using another OS supported by Fixstars Amplify at the following URLdecoration or Google Calaboratory.

If you wish to use a machine other than the standard machines supported by the Fixstars Amplify SDK (Fixstars Amplify AE and D-Wave machines), please prepare a subscription agreement with the provider of the machine. You can use those machines with the Fixstars Amplify SDK by using the tokens issued by those companies. For details on how to connect to and use the quantum annealing/Ising machines supported by the Fixstars Amplify SDK, please refer to this documentdecoration.

The D-Wave Free Program is open to registered Fixstars Amplify users (residents of Japan only). After logging in, please download the D-Wave Usage Agreement, fill out the required information, and upload it.

The agreement form will be sent to D-Wave after Fixstars confirms the contents. After receipt of the agreement, an access token for using D-Wave via Fixstars Amplify will be provided within 3 business days in principle.

Here is the link to the application form for use: Apply for usage


Fixstars Amplify can be used free of charge for trial and pilot purposes for the enterprises, and research & development purposes for universities and other educational institutions.
For the enterprises to use for business and commercial purposes, a paid plan, Standard plan or Premium plan, is required. Please visit the pricing page for more details. We also offer Academic plan for universities and other educational institutions who wish to use a more advanced computing environment. Please contact us for details.

It means an individual who has registered as a user with Amplify.

Yes. For more information about the calculation environment and pricing, please contact us using the inquiry form.


Contracts must be made on a monthly basis, for the necessary number of months.

It is not necessary to sign contracts for a longer period, as contracts can be signed for as short as one month.

The process to start using the paid plan is as follows,

plus interface iconIn case of transactions with quotation/invoice

1. Customer
Please request a quotation through our quotation form or by contacting our representative.
2. Our company
We will send you a quotation (generally within 3 business days).
3. Customer
Please submit the order form and provide us with your Fixstars Amplify user account (registered email address) to be linked to the a token.
4. Our Company
We will issue paid a token and an invoice by the end of the month prior to the month in which you start using the service.
5. Customer
Start using the service.

plus interface iconIf you use online payment

1. Customer
Log in using the button in the upper right corner of the screen and click the "Change Plan" button under Subscription Plans. Select your subscription plan and options, then click the "Proceed to Payment" button to complete payment. Once payment is completed, a receipt will be emailed to you.
2. Our company
After confirming payment, we will issue a token (in principle within 3 business days)*.
3. Customer
Start using the service.

* A token is associated with the user account that is logged in.
* If you subscribe to the Premium Plan with multiple users, a token will be issued to the user account logged in as "1". We will then contact you to confirm the other accounts to be added.

Payment for the entire contract period is requested upfront as a lump-sum.

Due to our monthly contractual agreements with customers, usage fees are not prorated. Regardless of when you start using the service in the middle of the month, you will be charged one month's usage fee for the month you start using the service.

Payment can be made by bank transfer or by credit card online through our payment portal.

You can change the users registered to your multi-user Premium Plan at any time. Additional users may be added at any time within the contractual limit of the number of available users.

It means several situations. One example is to use the program developed using Fixstars Amplify (either the SDK, AE, or both) in your business operations and activities. Another example is to deploy the system embedding the program developed using Fixstars Amplify into the production environment. Also, in case we conduct a paid Proof of Concept (PoC), a paid plan is required. Please consult the Terms of Use for further details.


For the use of the systems, which utilize Fixstars Amplify developed by a partner for a specific end-user, a paid contract of Fixstars Amplify between the end-user and us is required. We also have a partnership program for enterprises willing to use Fixstars Amplify for their system developments. For more details, please contact us.

Please also contact us in case you wish to develop SaaS-type applications using Fixstars Amplify for many end-users.

Our support team is available to assist you with inquiries on weekdays, from 10:00 a.m. to 6:00 p.m. Japan time.

It is located in Tokyo.

The data sent to Fixstars Amplify AE includes only information about the equation to be solved. Fixstars Amplify AE does not store the equation information to the storage devices, and Fixstars Amplify AE also discards it from memory after calculation.

If there are any other questions, please contact us