GPT-5 PRO IN THE API! GPT-5 PRO IN THE API!
TOOLS
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OpenAI AgentKit won’t eliminate agent-builder startups opportunity
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Hot take: OpenAI AgentKit is NOT going to kill agent-builder startups. Tons of agents use a mix of models from different providers. As new models are released, they're swapped in. AgentKit will only support OpenAI models. There's TONS of room for a model-agnostic AgentKit.
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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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Copilot Memory Update: Selective Forgetting Now Available
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Underrated: AI that knows when to forget, not just remember. That's why we've updated Copilot memory to follow directions for both – and you can check + edit its memories any time under settings > manage memory. Live now in Windows, web + mobile. pic.twitter.com/ICqXzWhnaU
— Mustafa Suleyman (@mustafasuleyman) 6 octobre 2025Underrated: AI that knows when to forget, not just remember. That's why we've updated Copilot memory to follow directions for both – and you can check + edit its memories any time under settings > manage memory. Live now in Windows, web + mobile.
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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 App SDK Evolution: Canva Integration Inside ChatGPT
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ok 2 years on, the new ChatGPT App SDK is much more fully fleshed out w integrations
— swyx 🐣 (@swyx) 6 octobre 2025
look at this ui. it’s not canva. it’s canva-inside-chatgpt.
this isn’t the chatgpt you grew up with. https://t.co/Ce8LlWVEbJ pic.twitter.com/BZloK1r6sMok 2 years on, the new ChatGPT App SDK is much more fully fleshed out w integrations look at this ui. it’s not canva. it’s canva-inside-chatgpt. this isn’t the chatgpt you grew up with.
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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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OpenAI DevDay Live Blog Coverage and Announcements
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Decided to live blog this morning's OpenAI DevDay announcements, since I'm in the audience
