Models & agent settings
Choose how your agent reasons and manage a supported model account connection.
LLM model thinking reasoning ChatGPT subscription model accountOn this page
Open the agent's General settingsChoose a model for the taskSet the thinking levelGive the agent a roleConnect a ChatGPT accountUnderstand the cost boundaryChange or disconnectOpen the agent's General settings
Select your agent, then open General. The model list shows the models available in your environment, grouped so you can weigh capability against cost. Availability can change with your workspace configuration and any connected model account.
Advanced is selected from the Basic, Advanced, and Expert profiles. Custom opens the available models and supported thinking levels.
Choose a model for the task
Models come from several providers — the Claude, GPT, and Gemini families, alongside other supported options — and are organized into three cost tiers:
| Tier | Best for |
|---|---|
| Premium | The most demanding reasoning: complex analysis, app building, and multi-step work where quality matters most. |
| Standard | Everyday work that still needs solid reasoning, at a lower cost per task. |
| Budget | High-volume or routine work such as short summaries and quick lookups. |
Each model also carries a capability label — Basic, Advanced, or Frontier — shown next to its name. This is separate from the cost tier, so you can spot a capable model that is still inexpensive to run. Pick the model in the selector, or open Custom to choose a specific model and thinking effort by hand. Regular OpenAI choices use Opser credits.
Set the thinking level
The thinking level controls how much reasoning a model does before it answers: Off, Minimal, Low, Medium, High, and — on models that support it — Xhigh. More thinking can improve hard analysis but takes longer and uses more credits; less thinking is faster and cheaper for straightforward tasks. Not every model supports every level, so if you switch models the level may adjust to the closest one available.
Give the agent a role
General also includes the agent's personality and knowledge. Personality describes how it should behave and communicate. Knowledge supplies domain facts and standing instructions for its role. These are separate from the organization's shared context and from the current conversation.
Choose the intended agent before editing. A shared agent uses its own configuration when serving different members; changing your personal agent does not configure the shared one. See Context & memory.
Connect a ChatGPT account
Open Settings → Profile and use Linked accounts to run a Connect ChatGPT flow that lets your agents use models from your own ChatGPT subscription. Start the connection, follow the sign-in steps, and return to Opser to confirm the connected state. Agents you own can access your account’s connection; a connection made earlier on a specific agent remains listed and manageable there. Never paste account credentials into a conversation.
Once connected, the model selector adds a second Expert choice with a colored Subscription tag. The Custom dialog keeps regular GPT models in OpenAI · Opser credits and adds a separate OpenAI · ChatGPT subscription section. Only choices carrying the Subscription tag use your ChatGPT plan; the untagged Expert and OpenAI choices continue to use Opser credits.
Understand the cost boundary
A connected subscription and Opser credits are different billing arrangements. Model work runs on Opser credits unless it uses a connected account, which bills against that provider's own plan and limits. Connecting an account does not make every tool, integration, or generated artifact free — check the Usage view for what a given kind of work consumes.
Change or disconnect
Save your model and thinking choices in General. Use the Linked accounts controls in Profile to disconnect when you no longer want your agents to use a connected account. If a model stops being available, choose another from the list and check the account connection before retrying.