IntelliJ Ultimate + IDE Services autocompletion -> Cannot set on-prem Mellum
已回答
Our company uses around 100 IntelliJ Ultimate instances.
In order to use the AI Assistant Plugin with an on-prem LLM , we have purchased the IDE Services and manage the AI Assistant Plugin centrally.
We also need to use the IDE autocomplete feature on-prem, so we installed a on-prem Mellum instance.
The IDE Services docs specifies that it shopuld be possible to configure a self-hosted Mellum provider (see screenshot below).
However, this option is not available in the latest version we're just installed (JetBrains IDE Services 2025.5.0.1943)
How can we enable this ? Is there another IDE Services version, where this option is available?
If yes, can you provide it ?
Thank you

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Could you elaborate on your issue please? From my understanding, you've successfully installed IDE Services and on-prem Mellum instance too but you are not able to connect them, am I right? Could you share your IDE Services configuration file with preliminary hidden sensitive data?
Could you share the screenshot from your IDE Services AI Enterpise AI Providers page? Is there only JetBrains AI Provider in Code Completion providers list?
Also, please refer to the official documentation on how to deploy JetBrains Mellum: https://www.jetbrains.com/help/ide-services/jetbrains-mellum.html#jetbrains-mellum-installation
Hi Petr
Yes, right, we have succesfully installed the IDE services and we have an on-prem Mellum. I cannot configure the IDE services to connect to out on-prem Mellum.
"Is there only JetBrains AI Provider in Code Completion providers list?" - exactly this is my problem.
Here are some screenshots from the IDE services
Please submit the request via IDE Services support form: https://ide-services-support.jetbrains.com/hc/en-us/requests/new?ticket_form_id=7667397175954 and attach IDE Services configuration file.
As for now this is the community public request there is no possibility to review your configuration file.