When you use chat and agents, your usage is measured based on underlying model provider costs. More expensive models consume your limit faster than lightweight ones. Today’s models are fundamentally more powerful than what existed even a year ago. They can write full documents, build presentations, run multi-step research, and handle complex tasks end to end. So what are the limits, and how do you make the most of them? This page explains how usage limits work and what happens when you reach them. For tips on getting the most out of your Langdock subscription, see Usage Tips.Documentation Index
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Usage windows
Your usage is tracked across two time windows:| Window | Duration | How it works |
|---|---|---|
| Session | 5 hours | Starts when you send your first message. Resets after 5 hours. |
| Weekly | Monday to Monday | Fixed weekly window. Resets every Monday. |
Checking your usage
You can see your current usage in Settings > Account > Usage. The page shows progress bars for both your session and weekly usage, along with the time until each window resets.
Tips to get the most out of your usage
We’ve put together a Usage Tips guide to help you and your team get the most out of Langdock, with practical tips on model selection, prompting, and how to work efficiently within your limits.What happens when you reach a limit
When you hit your session or weekly limit, your messages are automatically routed to GPT-5.2 until that window resets. You can continue working without interruption, just on a different model. If your admin has enabled usage requests, you will see a Request higher limits button in the chat. Your admin will be notified and can increase your limits or upgrade your plan.If you reach a limit while the model is working, it is allowed to finish its response before switching. You won’t see a reply cut off halfway. Your next message will use GPT-5.2.
Increasing your limits
Your usage limits depend on the plan you are on. If you regularly hit your limits, your admin can:- Upgrade you to a higher plan with more usage.
- Enable pay-as-you-go billing so you can keep using premium models after reaching your limit.
There is also a spam protection limit of 250 messages per 3 hours, regardless of model cost. This limit exists to prevent automated abuse and does not affect normal usage. Last updated: April 2026