GPT Migrator
Migration fundamentals and planning

Migrating a multilingual Custom GPT

Last checked October 18, 2026
Short answerSay how the bot should choose a language, keep knowledge files in the languages users need, and test each language separately, because model quality varies by language and platform.

Instructions

Files

Testing

Run your test prompts in every language, because accuracy and tone can differ from the original GPT: why answers differ. Check the new platform's file and language support before you move: file limits.

Check your GPT before you move it

Paste your instructions, file names and Actions schema into the free checker. It runs in your browser and builds a portable bundle. Nothing is uploaded.

Open the free checker

Related guides