OCTOBER 8, 2025
Fix Context Loss and Your Instagram, LinkedIn Profiles with These New Prompts
Where Startups Actually Spend on AIHype is loud. Budgets are quiet. If you want signal, follow the money. Andreessen Horowitz looked at Mercury banking data for June–August 2025 and published a ranked list of the 50 AI apps startups are actually paying for. Not GPUs. Not cloud. The application layer. The full ranking sits in the chart on page 2, with methods on pages 1–2. Here’s the shape of it. About sixty percent are horizontal tools that anyone can use. Assistants. Workspaces. Meeting and writing helpers. The rest are vertical. Legal, support, sales, recruiting, IT. Even among the horizontals, there isn’t one winner. Multiple assistants made the cut. Multiple note-takers. Multiple creative suites. Teams are still mixing and matching for specific moments and workflows. No lock-in yet. Creative tools are the single largest category. That matters. It means more people inside a company can ship usable content without waiting on a specialist. Freepik and Canva give non-designers real reach. Midjourney and Photoroom compress concepting time. CHECK OUT THE REST ON SUBSTACKHIGHLIGHTS: WME Opts Artists Out of AI Training; 20% of US Workers Use AI in Their Jobs; Deloitte to Partially Refund Australian Government for AI-Generated Errors; and Details on Democrats' Proposed 'Robot Tax'
OpenAI Announces AgentKit: Here's What It Will DoAgentKit (announced this week) is OpenAI’s end-to-end toolkit for building, deploying, and improving AI agents—without juggling separate orchestration, connectors, evals, and custom UIs. It packages three core blocks: Agent Builder (a visual, versioned canvas with guardrails to design multi-agent workflows), Connector Registry (a central admin panel to manage data/tool access across ChatGPT and the API), and ChatKit (a customizable, drop-in chat UI that feels native in your app). Rounding it out are upgraded Evals—datasets, trace grading, automated prompt optimization, and third-party model support—and reinforcement fine-tuning (GA on o4-mini, private beta on GPT-5) with custom tool calls and graders to push agent performance. ChatKit and the new Evals are generally available today; Agent Builder is in beta, and Connector Registry is rolling out in beta to orgs with a Global Admin Console, all under standard API pricing. Website: https://openai.com/index/introducing-agentkit/ Read All mAIn Street Back Issues HereYour input fuels the content. Let me know how I did today! |
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