ContextPulse — ChatGPT Thread Health

About

Never lose context mid-conversation again.

ContextPulse shows you a live thread health indicator while you use ChatGPT — so you always know when your context window is getting full and when it's time to start a fresh thread.

What you see:
- Healthy / Thinning / Critical status at a glance
- Tokens used vs context window size
- Tokens remaining
- Message count
- Average tokens per message
- Estimated messages left before context fills

Works for all thread lengths — including long conversations where ChatGPT only renders the last few messages on screen. ContextPulse reads the full conversation accurately, not just the visible messages.

ContextPulse automatically detects which ChatGPT model you're using and adjusts the context window accordingly

100% local. Nothing leaves your browser.
- No account or sign-up needed
- No data collection or telemetry
- No external network requests
- Only runs on chatgpt.com