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Every time Catalyst sees a new prompt for a task, it records a hash of the prompt content and treats it as a new version. You don’t need to do anything to enable this. It happens automatically as requests flow through the gateway.

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How it works

Catalyst hashes the system message of each request. When the hash changes (because you updated your system prompt), a new version is created under that task. The previous versions are preserved, so you have a full history of every system prompt your task has used. This means you can:
  • See which prompt version a specific inference used
  • View the full history of prompt changes for a task
  • Filter inferences by prompt version to compare behavior across changes

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What triggers a new version

A change to the system message creates a new version. Changes to user messages, parameters like temperature, or the model do not currently trigger a new version.

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Coming Soon

  • Broader hashing - future versions will include user message templates, model, and parameter changes in the version hash
  • Dataset filtering by version - build training and eval datasets tied to a specific version of a prompt, so you can train on data from the version that performed best