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My GA4 custom channel groupings are missing AI referral traffic from Microsoft Copilot and ChatGPT, so how do I set up regex filters to capture these properly?

ChatGPTgpt-62 queries11/1/2026
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Fan-out diagram

The searches the AI actually ran for this prompt.

SEED QUERY
My GA4 custom channel groupings are missing AI referral traffic from Microsoft Copilot and ChatGPT, so how do I set up regex filters to capture these properly?
2 real searches · 1 real-search pass
GA4 custom channel group regex session source AI traffic ChatGPT Microsoft Copilot official documentationGoogle ↗
OBSERVEDInstruction
GA4 default channel group custom channel group regex matching source medium session source documentationGoogle ↗
OBSERVEDOther / navigational

Badge and edge weight = share of passes that produced the query. Hover a query for its intent and routing format.

Query classes

Google's semantic query class for every sub-query: what kind of answer each search is after, simulated vs real.

ChatGPT real searches (2)
Short factOther / navigational50%ComparisonConsequenceReasonDefinitionInstruction50%Yes / no

Classes come from the query-classifier (a local Laya model). 2 of 2 calls are low-confidence (under 50%) — hover a query in the table to see its confidence.

Searches and sources

ChatGPT2 real searches · gpt-6
GA4 custom channel group regex session source AI traffic ChatGPT Microsoft Copilot official documentation Google ↗
GA4 default channel group custom channel group regex matching source medium session source documentation Google ↗
  1. Custom channel groups · support.google.com
  2. ChatGPT, Gemini and Perplexity traffic in GA4 · ai.iwis.io
  3. Default channel group · support.google.com

Queries

2 queries · click a column to sort
Query / typeSearchIntentQuery classRouting formatClusterFreq ↓Weight
GA4 custom channel group regex session source AI traffic ChatGPT Microsoft Copilot official documentation
OBSERVED
Google ↗
AI Mode ↗
—Instruction——1x
of 1
GA4 default channel group custom channel group regex matching source medium session source documentation
OBSERVED
Google ↗
AI Mode ↗
—Other / navigational——1x
of 1