User-Agent

Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36; compatible; OAI-SearchBot/1.4; robots.txt; +https://openai.com/searchbot

first seen 2026-06-12 19:36 · last seen 2026-09-16 09:47 · JSON

Last 7 days (31 observations)

Distinct clients per day (last 30 days, peak 7/day)

Distinct clients are counted by IP-hash per complete UTC day — unlike observation counts this is insensitive to one chatty client, but NAT merges clients and address rotation splits them.

Decomposed attributes

Browser / clientOAI-SearchBot 1.4
Operating systemmacOS 10.15.7
Device classbot
Declared URLhttps://openai.com/searchbot
Noteinferred from the self-declared string — a claim, not a measurement; compare with the wire fingerprints above

Co-observed signals

Signals from other families seen in the same observation. A fingerprint spread thinly across many lower-layer signatures is a classic inconsistency signal.

TLS ClientHello (JA4)

fingerprintco-occurrences
t13d1011h2_61a7ad8aa9b6_3fcd1a44f3e3 Match?Exact match in Thumbprint's published controlled catalog captures: rust-reqwest 0.12.28.The fingerprint page shows the full measured match list. More on the catalog.299
t13d1312h2_a44d0ee8b3cc_e381dae6da6b2
t13d131300_f57a46bbacb6_1bd98dace7752

HTTP request (JA4H)

fingerprintco-occurrences
ge20nn050000_a36a3d5685e0_000000000000_000000000000150
ge20nr050000_a36a3d5685e0_000000000000_000000000000102
ge20nr060000_c57eabf9cebf_000000000000_00000000000027
ge20nn060000_c57eabf9cebf_000000000000_00000000000020
ge20nn130000_8613e10c8b61_000000000000_0000000000002
ge11nr05enus_f3bb7aa45ec4_000000000000_0000000000001
ge11nr070000_57531a5acb5d_000000000000_0000000000001

HTTP/2 frames (Akamai)

fingerprintco-occurrences
2:0;4:2097152;5:16384;6:16384|5177345|0|m,s,a,p Match?Exact match in Thumbprint's published controlled catalog captures: rust-reqwest 0.13.4, rust-reqwest 0.12.28, rust-reqwest 0.13.5, +3 more.The fingerprint page shows the full measured match list. More on the catalog.299
2:0;3:1;4:8388608;5:65536|8323073|0|m,s,a,p2

TCP SYN (p0f)

fingerprintco-occurrences
4:44+20:0:1390:65535,12:mss,sok,ts,nop,ws:df,id+:0156
4:45+19:0:1390:65535,12:mss,sok,ts,nop,ws:df,id+:0135
4:43+21:0:1390:65535,12:mss,sok,ts,nop,ws:df,id+:04
4:48+16:0:1390:65535,12:mss,sok,ts,nop,ws:df,id+:03
4:53+11:0:1460:65535,13:mss,sok,ts,nop,ws:df,id+:02
4:58+6:0:1420:mss*30,9:mss,sok,ts,nop,ws:df,id+:02
4:42+22:0:1390:65535,12:mss,sok,ts,nop,ws:df,id+:01

TCP SYN (JA4T)

fingerprintco-occurrences
65535_2-4-8-1-3_1390_12250
65535_2-4-8-1-3_1460_132
42600_2-4-8-1-3_1420_92

Country

fingerprintco-occurrences
US · United States303

Network (ASN)

fingerprintco-occurrences
AS8075 · Microsoft Corporation299
AS396982 · Google LLC2
AS13335 · Cloudflare, Inc.2