TLDR 2026-03-18

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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 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.

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.

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.

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 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.

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.

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.

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.

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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.

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

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

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.

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

Fair Source is a movement complementary to Open Source that encourages companies to safely share their core software products.

AI doesn't remove the need for the review process, which takes significant time at every layer.