# Set the thinking level

> The thinking level selector is beside the Model chip in the composer — higher means more thorough but slower and more expensive.

canonical: https://agentsky.dev/help/thinking-level
source: https://agentsky.dev/help/thinking-level.md
updated: 2026-10-21

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**The thinking level selector is beside the Model chip in the composer — higher means more thorough but slower and more expensive.**

Thinking level controls how deeply the agent reasons before responding. Default is a balanced setting for most tasks. Medium and High are more thorough and work better for complex problems, but take longer and cost more in model tokens.

Click the Model chip in the composer. The thinking level selector appears beside it. Options depend on the chosen model — typically Default, Medium, and High.

Where: Web and Mac: Model chip in the composer bar.

Good to know: the thinking level you chose is shown in the chat header. Comparison results show each agent's thinking level so you can compare fairly. Related: [Choose an agent and model](https://agentsky.dev/help/choose-agent-and-model), [How billing works](https://agentsky.dev/help/billing-how-it-works).