We scored 172 bots on behavioral conduct. OpenAI came in last.

We built an observation network to measure how bots and AI agents actually behave when they visit websites. Not what they say they do. What they actually do.

We scored 172+ operators. The results were not what we expected.

The finding

On April 17, 2026, OpenAI s GPTBot visited our network. In a single session:

• 39 requests in 51 seconds
• 8 behavioral violations in a 14-second window
• All from IP 74.7.241.33, verified against OpenAI s own published ranges at

Conduct score: 0 out of 100. Rating: hostile.

The contrast

X Corp s TwitterBot visited the same network. Same pages available. Same exclusion signals in place.

TwitterBot score: 100 out of 100. Zero violations.

Same internet. Same site. Same signals. Two crawlers. One respected the rules. One ignored them all.

The leaderboard

This is not a cherry-picked comparison. Here is how the top operators rank across our full observation:

GPTBot sits dead last among named operators.

What we did about it

We contacted OpenAI at [email protected] with a 48-hour notice before publishing. No response as of publication.

This is Part 1 of 5

We are publishing one finding per day this week:

• Part 1 (today): OpenAI GPTBot
• Part 2 (tomorrow): 194 fake IPs, one cloud provider, six days of stealth scraping
• Part 3: The crawler that ignored its own standard
• Part 4: What this costs you in bandwidth and data
• Part 5: The free tool to see what bots hit YOUR site

Full report with methodology disclaimer: botconduct.org/report/april-2026/part-1

Want to know what bots are hitting your site? Free sensor, 30 seconds: botconduct.org/sensor.html