/AI1d ago

Shopify CTO Mikhail Parakhin teases Fable 5, claiming the model represents a GPT-3.5 to GPT-4 leap in coding

The model's developer, architecture, and release date remain undisclosed

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Mikhail Parakhin@MParakhin#903inAI

I am a pro-OpenAI guy in general, so, don't take the following litely: I have been testing Fable 5 for the last few days and literally couldn't sleep. This is an unbelievably good model. Last time I felt this amount of progress was GPT 3.5->4. A step-function change in coding.

10:05 AM · Jun 9, 2026 · 910 Views
Sentiment

Users are excited about Fable 5's claimed GPT-4 level leap in coding because they see the advances as incredible progress enabled by scaling and call the results magical.

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kache@yacineMTB

@MParakhin 🤩

I am a pro-OpenAI guy in general, so, don't take the following litely: I have been testing Fable 5 for the last few days and literally couldn't sleep. This is an unbelievably good model. Last time I felt this amount of progress was GPT 3.5->4. A step-function change in coding.

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darshil@darshil

@MParakhin They haven’t even announced it yet…

1dViews 191Likes 1

@darshil https://www.theverge.com/news/946725/anthropic-releases-claude-fable-5-mythos

1dViews 225Likes 1
ten million beers@mojito_flow

@MParakhin ITS ABSOLUTELY INSANE WHAT this is magic.

WE NEED MORE COMPUTE

1dViews 99Likes 1
Jonathan Roomer@jonathanroomer

@MParakhin Love hearing that !!! I love the OpenAi pro models. So very promising

1dViews 86Likes 1
cqk@cqkten

@MParakhin Never bet against scaling ;)

1dViews 82Likes 1
Saulo Veronesi@sauloveronesi

@MParakhin Oh, incredible. Moving to be fully autonomous?

1dViews 101
darshil@darshil

@MParakhin OMG LETS GOOO

1dViews 56
Kevin C@K3vn_C

@darshil @MParakhin It's out today

1dViews 6