# OpenRouter

• Last-tested SillyTavern version: N/A
• Last updated: Oct 27, 2025
• Applicable platforms: N/A
• External resources required: no
• Technical skill required: none
• Safety: perfectly safe
• Expected time-commitment for a novice: 5 minutes

This is a collection of known quirks and workarounds for the OpenRouter platform.

This guide is neither affiliated with, nor an endorsement of, any products or services.

# Requests to omit reasoning are not honoured

Some models produce <think/>-like XML blocks in their output. It has often been reported that OpenRouter does not respect SillyTavern's requests to suppress thinking because their API lacks an appropriate field.

The best-known workaround for this is to add a prompt to the end of your custom list by opening the Chat Completion panel, scrolling to the bottom, and clicking the + to add a new entry. Its position should be In-chat with a depth of 0 to ensure it appears at the end of what gets sent. Its prompt should simply be the text /nothink.

This does not always work, but a number of affected models respect this as a switch to disable their thinking process. If it does not help you, just delete the custom prompt.