Usage and Costs
Usage, tokens, and costs
Explore token usage, context-window capacity, and estimated API costs across your AI Playground chats and models.
Updated October 17, 2026
The EidoStack AI Playground lets you inspect how many tokens your model requests use and what those requests may cost. View the usage summary inside a chat for a single conversation, or open Usage Metrics to explore trends across models, chats, and time periods. These figures help you understand your experiments and everyday AI usage.
Read usage inside a chat
Select the usage button 
in the prompt toolbar to open Usage Statistics for the current chat. It shows:
- The active model’s context-window capacity, including the percentage used and free.
- Input, output, and total token counts accumulated for the chat.
- The chat’s estimated total cost.
- A collapsible breakdown by model when the chat includes more than one model.
The context-window panel compares the last response’s input tokens with the selected model’s catalog context capacity. The totals aggregate the request records loaded for that chat. Use it to identify conversations that are approaching their context capacity or accumulating higher API costs.
Open workspace usage metrics
Select the usage icon 
in the workspace header to open Usage Metrics. The modal has three views:
| View | What it helps you inspect |
|---|---|
| Overall | Total tokens, input/output totals, estimated cost, token usage over time, daily cost, and token distribution by model. |
| Per Model | Input/output breakdowns, total tokens, estimated cost, and a table for each model used in the selected period. |
| Per Chat | Token and cost charts plus a table that identifies the chats contributing to usage. |
Empty states are expected when the selected period has no saved usage. They do not mean that your provider account has no activity outside EidoStack.
Filter the reporting period
Choose Today, Yesterday, Week, Month, Last Month, Year, Last Year, or Custom. A custom selection opens a calendar where you choose both start and end dates. The selected range applies to the active view, so you can move between Overall, Per Model, and Per Chat without redefining the period.
Use a short period to review recent prompts and a wider range to understand usage across longer conversations, multiple models, or repeated experiments. The views load on demand and can be reopened to refresh the data.
Interpret cost responsibly
Cost figures are estimates calculated from EidoStack’s catalog pricing and the token counts returned or calculated for the request. They are useful for comparing candidates under the same workload, but provider invoices and provider dashboards remain authoritative. Differences can arise from provider pricing changes, request details, or provider-side billing rules.
Cost is one useful signal, not an automatic measure of model quality. A low-cost answer may not satisfy your requirements, and a more capable model may cost more than you need for a particular task. Explore responses alongside their usage, and see Evaluate a model when you want to make a structured model choice.