AI agents are already visiting your site, and their traffic is not all alike. This past week's data comes from the Arkose Labs Global Consortium, our view of AI agent traffic across some of the largest consumer applications in the world. It shows two splits worth knowing about: where agents run and when they work.
Where agents run: 99.6% vs 4.6%
Last week, 99.6% of ChatGPT agent sessions came from data-center IPs, compared with 4.6% of Claude Desktop sessions. This makes a ChatGPT agent session about 22 times as likely as a Claude Desktop session to come from a data-center IP. The split held every day of the week, which points to how these agents are built rather than day-to-day noise.
Other agents landed closer to the low end: Grok at 21.6%, Instinct at 8.9%, Atlas at 6.6% and Comet at 6.0%.
Note: Meta Muse isn't shown because most of its consumer traffic now comes through residential proxies, which a data-center chart doesn't cover. Watch Kevin explain why.
Which agents make their origin clear
ChatGPT was the only agent we saw using Web Bot Auth, a standard that lets an agent sign its requests so a site can verify who sent them. An agent that signs its traffic has no need to hide where it comes from, and ChatGPT's agents run from data centers in the open.
The rest are harder to spot by where they run because they do not sign. Claude Desktop, Comet and Atlas run on a person's own device, on a home or office network, so their sessions look like the customer's own.
A check built only on data center IPs and signatures catches the agents that make their origin clear and misses the others. The useful split is between agents that make their origin clear and agents that don't; both classifications act on behalf of real customers.
When agents work: a weekend dip
Across the past three weekends, Comet saw 26% fewer sessions on weekends than on weekdays. All sessions on the network dipped 12%. Comet fell more than twice as far, and every Comet weekend day came in below every weekday.
In the Oct. 21 to 27 window, Comet sessions ran 36% below the weekday average and Claude Desktop sessions 34% below, against 9% for all sessions. ChatGPT Work rose 7%. Grok, Instinct and Meta Muse moved less, down 6%, 2% and 9%. (Each agent's busiest site was excluded so one customer could not set the pattern.)
This pattern fits people at work. Someone opens Comet or Claude Desktop, hands it a task and watches it run. When they log off on Friday, the agent stops too.
What this all means for your business
Agents that keep a workweek point to people directing them during the workday, which makes agent traffic a workforce question as much as a consumer one. ChatGPT Work sessions, by contrast, rose on the weekend.
Both kinds are already part of the traffic your business handles, and they call for different handling: one is easy to govern by origin, and the other looks like a person on a laptop.
See how Arkose Agent Trust Manager classifies each AI agent and lets you set policy for what it can do.
About the data
- Source for all figures: Arkose Labs Global Consortium, Arkose Labs' network of customer traffic
- Data-center share of sessions and Web Bot Auth signatures: Oct. 23 to 29, 2026
- Weekend vs weekday by agent: Oct. 21 to 27, 2026, with each agent's busiest site excluded
- Comet and all-session weekend dip (26% and 12%): Oct. 10 to 27, 2026, 3 weekends
