3h ago

DHH says GPT-5.5 shows substantial gains on complicated agent work, reversing version 5.2's lag behind Opus and marking a recovery for OpenAI amid rising competition

Jason Liu quote-tweeted the post and Adam.GPT reposted it.

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Original post
OPjason#929jason@JXNLCO

thnx

1:17 PM · May 22, 2026 View on X
QUOTE POSTVaibhav (VB) Srivastav#1853Vaibhav (VB) Srivastav@REACH_VB

GPT-5.5 cranking out 30k lines of QML for the Omarchy 4 branch + nailing subtle agentic reasoning!!

DHHDHH@dhh

For complicated agent work, it's amazing how much GPT5.5 has improved. I found 5.2 to be very far behind Opus. Now using Opus 4.7 after 5.5 feels like a big step backwards. Gotta love this level of competion! Strong comeback for OpenAI.

7:29 PM · May 22, 2026 · 61.9K Views
10:11 PM · May 22, 2026 · 1.1K Views
DHH says GPT-5.5 shows substantial gains on complicated agent work, reversing version 5.2's lag behind Opus and marking a recovery for OpenAI amid rising competition · Digg