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 ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌  ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ 


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TLDR

TOGETHER WITH [Wispr] [4]

TLDR 2026-03-18

YOU TALK 4X FASTER THAN YOU TYPE. WHY ARE YOU STILL TYPING
EVERYTHING? (SPONSOR) [4]

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📱

BIG TECH & STARTUPS

AMAZON ROLLS OUT 1-HOUR, 3-HOUR DELIVERY AS ULTRAFAST SHIPPING TREND
GROWS IN THE US (3 MINUTE READ) [6]

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)
[7]

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) [8]

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) [9]

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) [10]

Stop babysitting your coding agents. Unblocked [10] 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. [10]

OPEN SWE: AN OPEN-SOURCE FRAMEWORK FOR INTERNAL CODING AGENTS (7
MINUTE READ) [11]

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)
[12]

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) [13]

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) [14]

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

YOU DON'T NEED ANOTHER AI NOTETAKER. YOU NEED BETTER NOTES (SPONSOR)
[15]

Ever wish your meeting notes were… more digestible? Granola
transcribes your meeting while automatically summarizing and enhancing
your notes. No meeting bots. No stress. Get more from every meeting
[15]

EVERY LAYER OF REVIEW MAKES YOU 10X SLOWER (17 MINUTE READ) [16]

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) [17]

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) [18]

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) [19]

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 [20].

WILL AI KILL SPREADSHEETS? (14 MINUTE READ) [21]

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

CRUST (GITHUB REPO) [22]

Crust is a TypeScript-first, Bun-native CLI framework with composable
modules.

OPENREVIEW (GITHUB REPO) [23]

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

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

Thanks for reading,
Dan Ni [30] & Stephen Flanders [31]

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[5] https://ref.wisprflow.ai/tldr
[6] https://www.cnbc.com/2026/03/17/amazon-rolls-out-1-hour-3-hour-delivery-in-latest-fast-shipping-test.html?utm_source=tldrnewsletter
[7] https://www.testingcatalog.com/openai-launches-gpt-5-4-mini-and-gpt-5-4-nano-on-apis/?utm_source=tldrnewsletter
[8] https://sherwood.news/tech/nvidia-pushes-further-into-the-autonomous-vehicle-space-to-compete-with/?utm_source=tldrnewsletter
[9] https://insideevs.com/news/790194/donut-lab-verge-motorcycles-solid-state-battery-charging/?utm_source=tldrnewsletter
[10] https://getunblocked.com/?utm_source=tldrtech&utm_medium=email&utm_campaign=contextengine&utm_content=260318_secondary
[11] https://blog.langchain.com/open-swe-an-open-source-framework-for-internal-coding-agents/?utm_source=tldrnewsletter
[12] https://links.tldrnewsletter.com/HZAKB9
[13] https://stratechery.com/2026/an-interview-with-nvidia-ceo-jensen-huang-about-accelerated-computing/?utm_source=tldrnewsletter
[14] https://om.co/2026/03/17/openai-has-new-focus-on-the-ipo/?utm_source=tldrnewsletter
[15] https://go.granola.ai/adops-tldr-tech?utm_tldrtest=testa
[16] https://apenwarr.ca/log/20260316?utm_source=tldrnewsletter
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[18] https://blog.sentry.io/fair-source-software-in-the-ai-age/?utm_source=tldrnewsletter
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[20] https://jobs.ashbyhq.com/tldr.tech/3b21aaf8-dea5-4127-be71-602d30e5001e [21] https://speedrun.substack.com/p/will-ai-kill-spreadsheets?utm_source=tldrnewsletter
[22] https://github.com/chenxin-yan/crust?utm_source=tldrnewsletter
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