mAIn Street #105: Where Startups Actually Spend on AI; OpenAI Announces AgentKit: Here's What It Will Do; Fix Context Loss and Your Instagram, LinkedIn Profiles with These New Prompts; WME Opts Artists Out of AI Training; 20% of US Workers Use AI in Their


OCTOBER 8, 2025

  • PromptCraft: Fix Context Loss and Your Instagram, LinkedIn Profiles with These New Prompts
  • NewsDive: Where Startups Actually Spend on AI
  • THE HEADLINES: 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'
  • Tool Spotlight: OpenAI Announces AgentKit: Here's What It Will Do

Fix Context Loss and Your Instagram, LinkedIn Profiles with These New Prompts

  • Eight Prompts To Fix Instagram Growth Blockers: Actionable prompts covering the funnel from Reels to booked calls, proof packs, specific hooks, offer bridges, DM scripts, cadence calendars, scale metrics, and collab leverage. Each prompt includes fields, constraints, KPIs, and deliverable formats to execute immediately.
  • Simple ChatGPT Prompts For Better LinkedIn Profiles: Copyable prompts to rewrite your About section, craft recruiter-targeted headlines, generate keyword lists, and produce concise professional summaries. Handy for tailoring profiles to roles and improving ATS visibility without manual rewrites from scratch.
  • The “Key Answer” Workflow To Retain Breakthroughs: A lightweight knowledge-capture habit: label great outputs “key answers,” save in a running doc, and scan before starting new work. Prevents re-prompting, restores context fast, and compounds wins when shared across collaborators.

Where Startups Actually Spend on AI

Hype 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 SUBSTACK

HIGHLIGHTS: 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'

  1. IBM Unveils Advancements Across Software and Infrastructure to Help Enterprises Operationalize AI
  2. About 1 in 5 U.S. workers now use AI in their job, up since last year
  3. Deloitte to partially refund Australian government for report with apparent AI-generated errors
  4. Gravity defying, single-day AI stock rallies are the latest bubble signal
  5. Democrats demand ‘robot tax’ as AI reportedly threatens to replace 100M US jobs
  6. Recruiters use AI to scan resumes. Applicants are trying to trick it
  7. ‘Artists should have a choice.’ WME opts clients out of Sora update as AI anxiety deepens
  8. AMD signs AI chip-supply deal with OpenAI, shares surge over 34%
  9. Introducing apps in ChatGPT and the new Apps SDK
  10. Why do LLMs freak out over the seahorse emoji?
  11. Why Can’t Transformers Learn Multiplication? Reverse-Engineering Reveals Long-Range Dependency Pitfalls
  12. Sam Altman says there are no current plans for ads within ChatGPT Pulse — but he’s not ruling it out
  13. Deloitte will make Claude available to 470,000 people across its global network
  14. OpenAI declares ‘huge focus’ on enterprise growth with array of partnerships
  15. Jony Ive Says He Wants His OpenAI Devices to ‘Make Us Happy’
  16. Accreditors Encourage AI Use to Boost Credit Transfer Process
  17. AI now sounds more like us – should we be concerned?
  18. CoreWeave to Acquire Monolith, Expanding AI Cloud Platform into Industrial Innovation

OpenAI Announces AgentKit: Here's What It Will Do

AgentKit (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/


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