# ChatGPT Traffic Drop Appears To Be A Tracking Problem via @sejournal, @MattGSouthern

Digest AI · Marketing & Small Business · published 2026-10-15T21:48:30Z

Canonical: https://digestai.news/story/chatgpt-traffic-drop-appears-to-be-a-tracking-problem-via-sejournal

## Summary

ChatGPT’s referral traffic in Google Analytics 4 dropped by 22% to 57% of baseline for sites tracked by Graphite, starting October 9, according to CEO Ethan Smith. Graphite estimates this represents a 45% decline from previous levels. The drop stems from OpenAI’s removal of the `utm_source=chatgpt.com` tag and referrer data from links in answer text, which now appear as Direct traffic in GA4 instead. Smith calls it a bug and expects OpenAI to fix it soon, though Adobe’s Cedric Huesler confirmed OpenAI acknowledged the issue on October 14 and a partial fix began rolling out on October 15, restoring tagged clicks to near pre-change levels for some domains by midday that day.

Analysts note the change aligns with GPT-6’s rollout on October 7, which introduced a new answer format omitting tags in inline links. Peec AI’s Tomek Rudzki found direct URLs in 42% of ChatGPT responses (up from 8–10%) between October 9–13, with 54% pointing to homepages. Profound observed a drop in tagged source links from 98% to 66% over the same period, while Intelligent UI formats surged from 2% to 35% of answers. Experts urge publishers to annotate October 8–15 data and compare ChatGPT/Direct traffic side-by-side, as the fix won’t retroactively restore lost attribution.

## Key points

- ChatGPT referrals in GA4 fell 22% to 57% of baseline after October 9, per Graphite’s tracking
- OpenAI removed `utm_source` tags from inline links in answer text, causing misattribution as Direct traffic
- Adobe’s Cedric Huesler reports a partial fix began October 15, restoring tagged clicks to ~95–100% of pre-change levels

## Why it matters

Publishers rely on GA4’s ChatGPT attribution to measure AI-driven traffic, but the tracking loss risks misreporting declines as lost interest. The fix may restore accuracy but won’t recover lost data, and competitors like Gemini already embed UTM tags.

## Sources

1. [ChatGPT Traffic Drop Appears To Be A Tracking Problem via @sejournal, @MattGSouthern](https://searchenginejournal.com/chatgpt-traffic-drop-appears-to-be-a-tracking-problem/593157) (Search Engine Journal, 2026-10-15)

Part of the developing story: [OpenAI Ad Expansion Faces Tracking Glitch](https://digestai.news/thread/openai-expands-chatgpt-ads-to-seven-asian-markets) (4 stories)

## Cite

Digest AI, "ChatGPT Traffic Drop Appears To Be A Tracking Problem via @sejournal, @MattGSouthern", 15 October 2026, https://digestai.news/story/chatgpt-traffic-drop-appears-to-be-a-tracking-problem-via-sejournal

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