Claude agent using september-2025 model
Claude agent bundled with Phpstorm (but I guess it's the same for all IDEs) still uses claude-sonnet-4-5-20250929
Is there a way to switch to opus, or at least a newer build?
Please sign in to leave a comment.
Dear Francesco,
To select Claude 3 Opus for Junie, you’ll need to adjust the model settings in your IDE. Here’s how you can do it:
⌘(on macOS) orCtrlAlt S(on Windows/Linux).Kind Regards,
Ecaterina
Hello Ecaterina,
Thank you for the reply, however that only applies to Junie, not to Claude Agent.
Claude Agent is still better and faster for many tasks.
Dear Francesco,
If you had to pick the top 2 things Claude Agent does that Junie currently struggles with, what would they be? We’re looking to make Junie just as (if not more) capable for your daily work.
Kind Regards,
Ecaterina
Ecaterina Dubceac you last reply not only doesn't help but also is out of place, can you give us an actual helpful reply?
Hi Leandro Bortoletto
In the newer versions of JetBrains AI Assistant, we implement the model selector menu for Claude Agent:
https://www.jetbrains.com/help/ai-assistant/ai-chat.html#ca-select-model
Could you please update your IDE and the JetBrains AI Assistant plugin to the latest versions and check whether you have this feature?
Vladislav Kuzmeniuk i don't see it, as you can see i have the latest versions for both PhpStorm and Ai Assitant
Same for me:
Could you try to reinstall the Claude Agent?
The installed agent is located at:
If the issue persists, please provide the Recent Debug logs (see How to collect IntelliJ IDE logs for AI Assistant troubleshooting) to help us with the troubleshooting. Upload logs privately to our server and share the generated upload ID.
Vladislav Kuzmeniuk
i tried:
removed the .dmg from ~/.claude/downloads
restarted storm
triggered the re-install by trying to use the agent
same issue
then i tried:
uninstall the ai assistant plugins
restarted storm
re install assistant plugin
restarted storm
same issue
Upload id: 2026_03_20_dw2k13KayaxZgtxRTaVxud (file: phpstorm-logs-20260320-115700446305506944703021.zip)
Hi Leandro Bortoletto Francesco Montanari
Thank you for providing details!
Recently, we implemented ACP for the Claude Agent. And it's changed how the Claude Agent binaries work with the IDE and JetBrains AI Assistant plugin. May I ask you to update your plugin one more time to see if it brings improvement 253.32098.59 → 253.32098.66 ?
Vladislav Kuzmeniuk
after update, the default claude agent within the AI assistant disappeared. I had to install this plugin to have claude agent available again
but now it shows as a beta, and it didn't before (as you can see on the images I shared on https://intellij-support.jetbrains.com/hc/en-us/community/posts/32596840030482-Claude-agent-using-september-2025-model?page=1#community_comment_34167504488594):
Leandro Bortoletto
Everything is correct; it's expected behavior because the binaries for the Claude Agent have been updated.
Could you verify whether you have an option to choose a model for the Claude Agent now?
yes I do!
(forgot to say that, sorry)
I have the same 253.32098.66, didn't do anything special, just updated plugins when the IDE said there were updates, and I have the same as you have Vladislav Kuzmeniuk
It says it's using 4.6, looks great so far.
From a UX point of view, maybe it's not really clear for many users if the 1M is more powerful/expensive than the normal one
There is still a bug, I see there's an update available, but when I click on the link nothing happens. I have the same behavior on both a mac and a Windows pc.
You may update it via ACP Registry (Settings | Tools | AI Assistant | Agents):
If you would like to report a bug, please submit a request via YouTrack https://youtrack.jetbrains.com/issues/LLM