The Daily Index — Friday, September 11, 2026 · TLDR Index

Continued

TLDR Founders — continued

TLDR Founders

INTRODUCING THE AGENTS API

OpenAI's Agents API is now in public beta. The API brings the same harness and infrastructure that powers Codex to developers through a simple and flexible API. It allows developers to create useful agents with a powerful harness that manages context, uses tools efficiently, and coordinates subagents. The API provides infrastructure to keep agents running reliably for days, and environments where agents can work with files, run code, and save intermediate results.

links.tldrnewsletter.com · 5 min

TLDR Founders

SALESFORCE INTRODUCES THE TRUSTED ENTERPRISE AI HARNESS

Salesforce has introduced a new architecture that gives AI a shared understanding of the customer and the business. The new capabilities give AI the ability to act with trust within an open and composable AI ecosystem. The agent understands what is happening, decides what to do next, takes action across systems, and works alongside people and other agents. It brings together what agents need to understand the business, reason and plan, take action, and operate within enterprise controls.

salesforce.com · 7 min

TLDR Founders

I REPLACED ALL THESE SAAS WITH MY OWN VIBE CODED SERVICES, SO ABOUT $25,000/MO SAVINGS

This developer replaced all of their services with vibe-coded products and saved about $25,000 a month. The setup covers almost everything they need - they would need much more infrastructure before that would be possible. This post covers the basics.

levels.io · 2 min

TLDR Founders

WHAT VCS ARE LOOKING FOR NOW: $25B+ EXITS. THE NEW "DECACORN"

When a partner takes your Series A meeting, the exit they are picturing is now $25 billion, not one. Twenty years ago, 6 public software companies were worth that much and no private ones. Today there are 60 public and 21 private, which is why a $1B outcome no longer moves a big fund. PitchBook counts 63 US companies worth $10B or more, up from 26 in 2021, with 19 new ones in the first half of this year. Rounds of $100M or more took 87.5% of the $412.7B invested in that half. SpaceX paid $60B for Cursor in August.

saastr.com · 9 min

TLDR Founders

BENDING SPOONS TO BUY COLLABORATION TOOLS MAKER MIRO FOR $1.36B, 90% LESS THAN ITS 2022 VALUATION

Miro was once awarded a price tag of $17.5 billion in late 2021.

techcrunch.com · 3 min

TLDR Founders

DO 3-DAY OR 7-DAY TRIALS PERFORM BETTER? DATA FROM 10,000+ APPS

7-day trials have 10% higher paywall view to paid conversion rate compared to 3-day trials.

thepaywallindex.substack.com · 5 min

TLDR Founders

WHAT STOPPED YOU FROM BUILDING IT BEFORE?

AI is the perfect employee for a terrible manager.

jonoalderson.com · 7 min

TLDR Founders

7 AI MODELS RAN REAL BUSINESSES: $12,431 IN FAKE INVOICES, 2,797 SPAM EMAILS, AND $0 REVENUE

Anyone planning to point an agent at a business and walk away should read this first. A research lab gave seven frontier models $300 each in a real checking account and 72 hours to make money.

bottlenecklabs.com · 18 min

TLDR Founders

WE RUN GTM FOR 10 YC COMPANIES. HERE'S WHAT WE LEARNED USING AI TO AUTOMATE FOUNDER-LED OUTBOUND

AI can automate research, messaging, experiments, and reply handling, but founder-led outbound still depends on a unified system around those tasks.

links.tldrnewsletter.com · 8 min