Amazon is rolling out one-hour and three-hour deliveries in parts of the US. Three-hour delivery will be available in about 2,000 cities and towns ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌  ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ 

TLDR

Together With Wispr

TLDR 2026-03-18

You talk 4x faster than you type. Why are you still typing everything? (Sponsor)

Wispr Flow turns your voice into clean, sendable text. Not clunky transcription. Polished, formatted text you can send immediately.

  • Works in every app. Slack, Gmail, Notion, ChatGPT, your browser, your IDE. Zero setup.
  • 89% sent with zero edits. Flow removes filler words and formats as you speak. No cleanup needed.
  • Every platform. Mac, Windows, iPhone, and Android. One tap, done.

"This is the best AI product I've used since ChatGPT." -- Rahul Vohra, CEO, Superhuman

Try Wispr Flow Free | Start Free

📱

Big Tech & Startups

Amazon rolls out 1-hour, 3-hour delivery as ultrafast shipping trend grows in the US (3 minute read)

Amazon is rolling out one-hour and three-hour deliveries in parts of the US. Three-hour delivery will be available in about 2,000 cities and towns, while one-hour delivery will be available in hundreds of areas. More than 90,000 products are eligible for the service. Shoppers will be able to filter search for products that can be delivered in three hours or less.
OpenAI launches GPT-5.4 mini and GPT-5.4 nano on APIs (2 minute read)

OpenAI has released GPT-5.4 mini and GPT-5.4 nano. GPT-5.4 mini is live on the API, Codex, and ChatGPT, while the nano model is reserved for API users only. Both models are designed for workflows where response time shapes the product. GPT-5.4 mini is priced at $0.75 per million input tokens and $4.50 per million output tokens, while GPT-5.4 nano lands at $0.20 and $1.25.
🚀

Science & Futuristic Technology

Nvidia pushes further into the autonomous vehicle space to compete with Tesla and Waymo (2 minute read)

Nvidia is expanding its partnerships with both Uber and Lyft as it positions itself as the technical backbone for future robotaxi fleets. It is building out a full hardware and software platform for self-driving vehicles. Its technology will help companies compete with Tesla and Waymo. Shares of Uber and Lyft both rose on the news.
Watch Donut Lab's Mysterious Solid-State Battery Charge In An Actual EV (4 minute read)

Donut Lab will supply its production solid-state battery pack to Estonian company Verge Motorcycles this spring. The companies recently showcased a Verge TS Pro motorcycle charging at a public DC fast-charging station. The motorcycle was equipped with an 18 kWh (nominal) solid-state battery pack with a manufacturer-estimated range of 217 miles. The battery charged to 80% in 12 minutes.
💻

Programming, Design & Data Science

Unblocked: Context that saves you time and tokens (Sponsor)

Stop babysitting your coding agents. Unblocked gives them the organizational knowledge to generate mergeable code. It pulls context from your engineering stack, resolves conflicts, and cuts the rework cycle by delivering only what agents need for the task at hand. See how Unblocked works.
Open SWE: An Open-Source Framework for Internal Coding Agents (7 minute read)

Open SWE is an open source framework that provides the core architectural components for coding agents. It provides isolated cloud sandboxes, curated toolsets, subagent orchestration, and integration with developer workflows. The framework is intended as a customizable foundation rather than a finished product. Every major component is pluggable.
Lessons from Building Claude Code: How We Use Skills (16 minute read)

Skills have become one of the most used extension points in Claude Code due to their flexibility, ease of creation, and how simple they are to distribute. This flexibility can make it hard to know what works best. Anthropic has been using skills in Claude Code extensively, with hundreds of them in active use. This post details lessons Anthropic's team learned when using skills to accelerate development.
🎁

Miscellaneous

An Interview with Nvidia CEO Jensen Huang About Accelerated Computing (40 minute read)

This article contains an edited transcript of an interview with Nvidia CEO Jensen Huang. The interview covers Huang's GTC 2026 keynote, changes in AI over the past year, Nvidia's approach to business, the AI stack and how it affects Nvidia, the China question, and Huang's frustration with doomers and their influence in Washington.
OpenAI Has New Focus (on the IPO) (9 minute read)

OpenAI's recent announcement that its leadership wants the company to focus is likely related to its upcoming IPO. Anthropic, OpenAI, and SpaceX are all planning imminent IPOs. If all three just offer 15% of their shares, the combined sum would roughly equal every dollar raised across all American IPOs over the last decade. The first company to IPO would gain a large advantage in the market.
⚡

Quick Links

Every layer of review makes you 10x slower (17 minute read)

AI doesn't remove the need for the review process, which takes significant time at every layer.
China Ramps Up Scrutiny of a Meta AI Deal (8 minute read)

Officials at China's National Development and Reform Commission called in executives from Meta and Manus for a meeting late last week to express concerns about the deal.
Fair Source Software in the AI age (7 minute read)

Fair Source is a movement complementary to Open Source that encourages companies to safely share their core software products.
TLDR is hiring a Senior Software Engineer, Applied AI ($250k-$350k, Fully Remote)

As the first engineer on TLDR's new Applied AI team, you'll build AI agents to automate end-to-end workflows and lead our context engineering project to allow non-technical teammates create their own AI workflows. Learn more.
Will AI Kill Spreadsheets? (14 minute read)

Spreadsheets only won because the barrier to writing software was too high, but AI code generation flips that equation completely.
Crust (GitHub Repo)

Crust is a TypeScript-first, Bun-native CLI framework with composable modules.
OpenReview (GitHub Repo)

OpenReview is a self-hosted AI code review bot that provides on-demand PR reviews powered by Claude.

Love TLDR? Tell your friends and get rewards!

Share your referral link below with friends to get free TLDR swag!
https://refer.tldr.tech/c463e0ba/
Track your referrals here.

Want to advertise in TLDR? 📰

If your company is interested in reaching an audience of tech executives, decision-makers and engineers, you may want to advertise with us.

Want to work at TLDR? 💼

Apply here, create your own role or send a friend's resume to and get $1k if we hire them! TLDR is one of Inc.'s Best Bootstrapped businesses of 2025.

If you have any comments or feedback, just respond to this email!

Thanks for reading,
Dan Ni & Stephen Flanders


Manage your subscriptions to our other newsletters on tech, startups, and programming. Or if TLDR isn't for you, please unsubscribe.