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Context Migration Tool

AI Context Migrator

Move your assistant context, memory, and preferences from one platform to another — entirely in your browser.

Platform specs verified March 2026 · ChatGPT = GPT-5.2 · Gemini = Gemini 3 (AI Pro/Ultra) · Claude = Sonnet 4.6 / Opus 4.6

100% local processing. No files are uploaded to any server. All file handling — reading, splitting, and downloading — happens entirely within your browser. This tool has no backend, no analytics, and no network requests. Your conversation data never leaves your device.

This tool does not store or transmit your data. Always review AI-generated summaries for sensitive information before pasting them into a new platform. Use at your own risk.

1
Platforms
2
Request export
3
Extract
4
Files
5
Import
✓
Done
1
Select platforms
Choose where you're migrating from and to
Source — Migrating from
Source tier
Destination — Migrating to
Destination tier
Context focus

Balanced — full summary across all sections. Professional — emphasises domain expertise, technical context, and work patterns; omits personal detail. Personal — emphasises lifestyle, preferences, goals, and communication style.

2
Request your data export
Trigger the export now — it can take many hours to arrive
3
Extract your context
Use this prompt in ChatGPT to generate a structured summary of your assistant context
ℹ
⚠
Review the output before saving it. Remove any genuinely sensitive information — passwords, financial account numbers, personal identifiers — that you would not want stored in Claude's memory.
4
Prepare your files
Upload files for processing — or skip if you're only importing a text summary
ℹ
Option A — Context summary (recommended)
Save the output from Step 3 as a plain text file (.txt). You'll upload this directly to Claude in Step 5. No processing needed here — continue to Step 5.
Option B — Full conversation export (optional, ChatGPT only)
If you want to reference raw conversation history alongside your summary, upload your export file(s) here to split them if they exceed Claude's upload limit. Gemini Takeout does not contain full conversation text — the Step 3 summary is the primary artefact for Gemini migrations.
📂 Select your conversation export

Drop files here or click to browse · conversations.json (ChatGPT) · Multiple files accepted

Tap to open file picker · conversations.json (ChatGPT) · Multiple files accepted

5
Import into Claude
Three mechanisms — use the ones that fit your context volume
✓
Migration complete
Your context has been prepared for Claude. Test the import by starting a conversation and verifying Claude references your preferences and background correctly.
Suggested verification prompts