I'm glad ChatGPT will carry on the legal profession
@petergostev
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ChatGPT Full Assistant System Prompt Revealed
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My ChatGPT Pulse this morning titled "Full assistant system prompt"
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Cerebras and GB200 Dominance in AI Hardware Strategy
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Pretty much, zai were hinting heavily, one of the cognition engineers talked about thousands of GB200, and cerebras are marketing it heavily
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SWE-1.5 Model Architecture: Base Model, RL Training, Inference
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How @cognition /
@windsurf new SWE-1.5 model was built (probably), based on piecing together bits of information that was shared. Base model by: @Zai_org possibly GLM-4.6
RL Training: @nvidia on 'thousands' GB200 NVL72
Inference: @cerebras at 950 tks/sec -
OpenAI Agents Are Fine-Tunes: Operator and Deep Research
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All OpenAI agents are fine tunes: Operator, Agent Mode, Deep Research (same goes for Google), Codex now too. I think even Canvas was too at some point.
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Codex Web Changes Revert Feature Improves Developer Experience
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Didn't realise you can just revert apply Codex web changes, that's a really nice quality of life improvement!
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OpenAI Plans Aggressive Expansion With Advanced Future Models
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@sama "We wouldn't be going this aggressive if all we had was today's model. We get to see it a year or two in advance"
— Peter Gostev (@petergostev) 17 octobre 2025
"We will partner with a lot of people: from electrons to the model distribution."
"You should expect much more from us in the coming months" https://t.co/zoncWJV13a pic.twitter.com/FxEYdoBog4@sama "We wouldn't be going this aggressive if all we had was today's model. We get to see it a year or two in advance" "We will partner with a lot of people: from electrons to the model distribution." "You should expect much more from us in the coming months"
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GPT-5 o3.1 iteration represents next leap in AI reasoning capabilities
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Lead OpenAI researcher: "GPT-5, in some way, can be considered o3.1 – iteration of the same concept"
— Peter Gostev (@petergostev) 16 octobre 2025
"What I'm after right now is something next, what would be a significant jump to how we interact with models, that are more capable, think for even longer and interact with even… https://t.co/bZOtxQYXHYLead OpenAI researcher: "GPT-5, in some way, can be considered o3.1 – iteration of the same concept" "What I'm after right now is something next, what would be a significant jump to how we interact with models, that are more capable, think for even longer and interact with even
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Claude Haiku Advances from 3 to 4.5 Model
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Claude Haiku progress: 3 > 3.5 > 4.5 pic.twitter.com/5Rrf1Rkbof
— Peter Gostev (@petergostev) 16 octobre 2025Claude Haiku progress: 3 > 3.5 > 4.5