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Feed · Lenny Rachitsky

Lenny's Newsletter

Newsletter covering AI tools, developer platforms, and tech industry trends including model comparisons, product applications, and career insights for builders and managers. This page collects 786 posts published between June 2023 and October 2026. Recent coverage focuses on AI (Horizontal), Developer Tools and Venture Capital & Startups. Lenny's Newsletter publishes roughly 23 posts a month; the best of them appear in the SandHill weekly digest.

786 posts indexed23 in the last 30 daysAI (Horizontal) · Developer Tools · Venture Capital & Startups · Enterprise SoftwareVisit site ↗

Saturday, 24 October 2026

1 piece

🧠 Community Wisdom: Negotiating a lowball offer, designers earning a seat in product decisions, resources for building an MCP server, and more ↗

Venture Capital & Startups

Wednesday, 21 October 2026

1 piece

Claude Duet is beautiful. I still forgot to use it ↗

AI (Horizontal) · Enterprise Software

Monday, 19 October 2026

2 pieces

🎙️ How I AI: Meta Muse Wonder + How Brooke Lacey is scaling video with AI ↗

AI (Horizontal) · Media & Entertainment

“Claude cuts my TikTok”: How this creator is scaling video with AI | Brooke Lacey ↗

Media & Entertainment · AI (Horizontal)

Sunday, 18 October 2026

1 piece

Inside the black box of AI: How AI models actually think | Emmanuel Ameisen (Anthropic)↗

AI Infrastructure

Saturday, 17 October 2026

1 piece

🧠 Community Wisdom: PRDs for agents, tracking competitor messaging, whether software moats still exist, exercising startup options when you leave, and more ↗

AI (Horizontal) · Venture Capital & Startups

Wednesday, 14 October 2026

1 piece

Meta’s new ‘Muse Wonder’ model: good for AI agents, bad for design ↗

AI (Horizontal)

Tuesday, 13 October 2026

1 piece

How to tell if a startup has a moat ↗

Venture Capital & Startups

Monday, 12 October 2026

2 pieces

🎙️ How I AI: How Meta designed Muse with Alex Cornell ↗

AI (Horizontal) · Media & Entertainment

How Meta designed Muse: an AI agent people actually want to talk to | Alex Cornell (Design Director)↗

AI (Horizontal) · Consumer

Sunday, 11 October 2026

1 piece

Why every company now needs to think and operate like a lab team | Josh Woodward (Google Labs, Gemini, AI Studio)↗

AI (Horizontal) · Enterprise Software

Saturday, 10 October 2026

1 piece

🧠 Community Wisdom: Community Wisdom Top Contributors Summer Class 2026 + ML recommendation systems, getting back into product after being fired, deciding when to quit a side project, and more ↗

Monday, 5 October 2026

2 pieces

🎙️ How I AI: 8 real Jev use cases + How OpenAI uses ChatGPT Sites (live at DevDay!) + Claire’s DevDay recap ↗

AI (Horizontal) · Developer Tools

How OpenAI uses ChatGPT Sites (live at DevDay!) | Kath Korevec (Product Lead)↗

AI (Horizontal) · Developer Tools

Sunday, 4 October 2026

1 piece

OpenAI’s Head of ChatGPT: We’re entering a new era of AI (again) | Tibo Sottiaux ↗

AI (Horizontal)

Saturday, 3 October 2026

1 piece

🧠 Community Wisdom: Getting value from personal AI agents without handing over your inbox, the ego threat of going from IC to manager, uncommon perks to negotiate for, and more ↗

Venture Capital & Startups

Wednesday, 30 September 2026

2 pieces

OpenAI Dev Day 2026: The releases that actually matter ↗

AI (Horizontal) · Developer Tools

Jev: 8 real use cases for the fastest, cheapest model I’ve ever used | John Lindquist ↗

Developer Tools · AI (Horizontal)

Tuesday, 29 September 2026

1 piece

All of the Lenny & Friends Summit talks are now online!↗

Venture Capital & Startups

Monday, 28 September 2026

2 pieces

🎙️ How I AI: Jev for beginners + I left Claude for months, Opus 5.5 brought me back + Opus 5.5 vs. GPT-6 Sol bench ↗

AI (Horizontal) · Developer Tools

Jev for beginners: how to use it and what to build ↗

Developer Tools · AI Infrastructure

Sunday, 27 September 2026

1 piece

The grief, loneliness, and burnout sweeping through the tech industry right now | Molly Graham ↗

AI (Horizontal) · HR & Talent

Saturday, 26 September 2026

1 piece

🧠 Community Wisdom: AI doomerism, speeding up discovery in a big org, verifying engineering answers as a new PM, where analytics adds the most value, and more ↗

AI (Horizontal) · Data & Analytics

Tuesday, 22 September 2026

3 pieces

Opus 5.5 vs. GPT-6 Sol: which model won my blind taste test?↗

AI (Horizontal) · Developer Tools

I left Claude for months. Opus 5.5 is why I'm back ↗

AI (Horizontal)

Advanced evals: How to find (and fix) hidden AI failures in your product ↗

AI (Horizontal) · Developer Tools

Monday, 21 September 2026

2 pieces

🎙️ How I AI: Meta’s Muse review + How Warp ships 2,000 PRs a month with AI factories ↗

AI (Horizontal) · Developer Tools

How Warp ships 2,000 PRs a month with AI factories | Zach Lloyd (CEO, Warp)↗

Developer Tools · AI (Horizontal)

Sunday, 20 September 2026

1 piece

90 minutes of unfiltered product advice from Snap and Discord’s product chief | Peter Sellis ↗

Venture Capital & Startups

Saturday, 19 September 2026

1 piece

🧠 Community Wisdom: Finding your first users before the product exists, debriefing your own interviews, what to optimize for in the early years of your career, and more ↗

Venture Capital & Startups

Wednesday, 16 September 2026

1 piece

Muse review: The personal AI agent that gets consumer UX right ↗

AI (Horizontal) · Consumer

Tuesday, 15 September 2026

1 piece

60+ new creative growth ideas ↗

Marketing & Sales Tech · Venture Capital & Startups

Monday, 14 September 2026

2 pieces

🎙️ How I AI: How two SpaceXAI designers use Grok Bot to do their jobs ↗

AI (Horizontal) · Developer Tools

How Grok Bot designers use AI agents to build personal sites and product prototypes | John Bai & Peng Zheng ↗

AI (Horizontal) · Developer Tools

Saturday, 12 September 2026

1 piece

🧠 Community Wisdom: AI basketball coaching, Jira vs. Linear, building a business case for platform teams, favorite AI use cases, and more ↗

Tuesday, 8 September 2026

1 piece

How we built Grok Bot in a month | Roman Ugarte (SpaceXAI)↗

AI (Horizontal)

Monday, 7 September 2026

2 pieces

🎙️ How I AI: GPT-6 Astra is a banger + Stripe’s AI playbook + Grok Bot vs. OpenClaw: why I replaced my entire agent stack ↗

AI (Horizontal) · Enterprise Software

Build your own company brain: the enterprise AI playbook from Stripe’s engineering team | Sharadh Krishnamurthy ↗

Enterprise Software · AI (Horizontal)

Sunday, 6 September 2026

1 piece

Why companies are becoming a series of loops | Anish Acharya (a16z)↗

Venture Capital & Startups · AI (Horizontal)

Saturday, 5 September 2026

1 piece

🧠 Community Wisdom: Driving AI adoption when habits are the bottleneck, leveling up from APM to a mid-level PM role, converting a wave of new users to subscription, and more ↗

AI (Horizontal) · Marketing & Sales Tech

Top posts from this feed

01

I spent $20,000 on Devin in a month. Here’s what I learned | Ryan Carson (solo founder)

Aug 2026

02

Jev: 8 real use cases for the fastest, cheapest model I’ve ever used | John Lindquist

Sep 2026

03

GPT-6 Astra is a banger - here’s everything I’ve built

Sep 2026

04

🎙️ How I AI: How this PM uses Claude to handle 70% to 80% of his workday

Aug 2026

05

🎙️ How I AI: Grok Bot + Grok 4.6—what’s great (and what’s still hype) & Lessons from spending $20,000 on Devin in one month

Aug 2026

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