Codex – 40t tokens for the gpt-5-codex model since launch, openai engineers do 70% more PRs with Codex (note, this is not amount of code written), and some new enterprise features. Sama promised big updates soon too
@petergostev
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UI Testing Tools for AI Agents with Guardrails
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Sweet UI for testing the agent – it highlights which bit of the flow is working. Other nice bits, Widget Builder, and Guardrails (still pings the model, but an easy to use way to do this) https://t.co/Q0jHhBaSI5 pic.twitter.com/nhGcnN7Waw
— Peter Gostev (@petergostev) 6 octobre 2025Sweet UI for testing the agent – it highlights which bit of the flow is working. Other nice bits, Widget Builder, and Guardrails (still pings the model, but an easy to use way to do this)
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Visual builder API responses chat kit and evals for non-OpenAI models
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Visual builder for responses API. Chat kit and a probably underrated one – evals for non openai models. Difficult for evals startups, not just agent startups
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App Store Approval Process Coming Later This Year
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Apps will have an app store like approval process, available later this year
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ChatGPT Apps: First Strong AI Implementation with MCP Integration
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Apps I chatgpt feels like the first good implementation of AI apps. I can see why they were dragging their feet on MCPs – apps sdk is built on them and this feels a lot better
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Nvidia’s Energy Efficiency Advantage Against Competitors Like Huawei
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Nvidia thrives in the world of limited energy – it has the best 'intelligence per watt' offering, so in a world where energy is much more abundant, other competitors might get a foothold. Take China for example, Huawei chips are ~1/3 the efficiency of Nvidia's (system-level
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Theory vs Practice: AI’s Practical Breakthroughs Challenge Old Guard
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"It works in practice – but does it work in theory?". My biggest problem with the criticism from the 'old guard' of AI (e.g. interview with Rich Sutton) is that there seems to be complete lack of engagement with what has been achieved in the last 2-3 years. The fact that we went
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Sora Recognized as Greatest Generative AI Model
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Replicated for @sama and for @billpeeb I got "sora is the greatest" pic.twitter.com/JaQdL5Kg5A
— Peter Gostev (@petergostev) 1 octobre 2025Replicated for @sama and for @billpeeb I got "sora is the greatest"
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Cameo Instructor Impersonates OpenAI CEO Sam Altman
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Are these @sama cameo instructors? "hello my name is Sam I work as a CEO of OpenAI, I'm trying to turn my head around a lot"
— Peter Gostev (@petergostev) 1 octobre 2025
I didn't prompt anything like this, I asked it to read out the text at the beginning, tagging Sama pic.twitter.com/fmM37L5Oc4Are these @sama cameo instructors? "hello my name is Sam I work as a CEO of OpenAI, I'm trying to turn my head around a lot" I didn't prompt anything like this, I asked it to read out the text at the beginning, tagging Sama
