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Datasette-llm-limits: a plugin to control LLM spending

💻 Code & Dev·Tom Levy·

Datasette-llm-limits: a plugin to control LLM spending

Datasette-llm-limits: a plugin to control LLM spending
Key Takeaways
1The datasette-llm-limits plugin allows you to set spending limits for the use of LLM in Datasette.
2It works with datasette-llm and datasette-llm-accountant to manage costs per user or globally.
3The configuration includes a 24-hour window and a spending cap of $1.00.
💡Why it mattersThis solution helps control costs associated with using language models, preventing unexpected expenses.
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Full Analysis

The datasette-llm-limits plugin has been introduced to help manage expenses related to the use of language models (LLMs) within the Datasette platform. This new tool integrates with the existing datasette-llm and datasette-llm-accountant plugins to provide more precise cost management.

The main feature of this plugin is to allow users to set a spending limit, either per user or globally. This is done through a simple YAML configuration, where one can specify a rolling 24-hour time window and a maximum amount in US dollars, for example:

datasette-llm-limits:
  window: rolling-24h
  amount_usd: 1.00

This approach aims to prevent budget overruns by controlling the use of LLM resources. The plugin was introduced in an article by Simon Willison, published on May 15, 2026, highlighting its importance for users looking to optimize their spending.

In parallel, Simon Willison offers a sponsorship service for $10 per month, providing a summary of the most significant developments in the field of LLMs, sent directly via email to subscribers.

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