13h ago

David Heinemeier Hansson claims GPT-5.5 outperforms every coding model since Opus 4.5, requiring only high-level steering

Beff Jezos expressed skepticism about competitor model Opus 4.7.

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Original post
jason#929@JXNLCOOPDHHDHH@DHH

I've had more "I can't believe it's this good" moments with GPT5.5 than any other model since Opus 4.5. It's shockingly, scarily capable. Days and days of amazing progress. All steering, no handwriting. Yet utterly delightful to conduct its coding. So, so good.

9:48 AM · May 25, 2026 View on X
QUOTE POSTRomain Huet#804Romain Huet@ROMAINHUET

Pretty special to see this from DHH.

Hard not to feel the same when you’re building with GPT-5.5.

DHHDHH@dhh

I've had more "I can't believe it's this good" moments with GPT5.5 than any other model since Opus 4.5. It's shockingly, scarily capable. Days and days of amazing progress. All steering, no handwriting. Yet utterly delightful to conduct its coding. So, so good.

4:48 PM · May 25, 2026 · 274.4K Views
1:08 AM · May 26, 2026 · 10.7K Views
QUOTE POSTBeff (e/acc)#839Beff (e/acc)@BEFFJEZOS

Can't say the same about Opus 4.7 right now. Hopefully 4.8 delivers

DHHDHH@dhh

I've had more "I can't believe it's this good" moments with GPT5.5 than any other model since Opus 4.5. It's shockingly, scarily capable. Days and days of amazing progress. All steering, no handwriting. Yet utterly delightful to conduct its coding. So, so good.

4:48 PM · May 25, 2026 · 274.4K Views
10:18 PM · May 25, 2026 · 7.5K Views
David Heinemeier Hansson claims GPT-5.5 outperforms every coding model since Opus 4.5, requiring only high-level steering · Digg