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JetBrains AI Assistant brings AI chat into IntelliJ IDEA, PyCharm, WebStorm, GoLand, and the rest of the JetBrains IDE family. Its bring-your-own-key mode accepts any OpenAI-compatible provider, so AI Chat can run on Opper models.
Looking for a coding agent in your JetBrains IDE? Use the Claude Code plugin with Opper, see Claude Code.

Setup

1

Open the provider settings

Settings → Tools → AI Assistant → Providers & API keys, then add an OpenAI-compatible provider.
2

Fill in the connection

3

Continue

Click Continue. AI Chat now runs on Opper, with no JetBrains AI subscription required.

Choosing a model

The model is named per provider entry rather than fetched, so add one provider entry per model you want to switch between. Which AI Assistant features work depends on what the model supports.

Troubleshooting

Check the key is an Opper key (they start with op-) and that you chose the OpenAI-compatible provider type rather than OpenAI.
Copy the model ID exactly from the catalog, including the provider prefix.
The agents in AI Assistant (Junie, Claude Agent and Codex) only accept keys issued directly by OpenAI or Anthropic, so they do not run on an OpenAI-compatible provider. Bring-your-own-key covers AI Chat. For an agent on Opper, use the Claude Code plugin.

Model catalog

Browse the catalog for model IDs and capabilities.

All apps

Every app that runs on Opper.
Last modified on November 5, 2026