The Daily Index — Friday, January 16, 2026 · TLDR Index

Across today’s newsletters

Today’s Index

TLDR

OPENAI INVESTS IN SAM ALTMAN'S BRAIN COMPUTER INTERFACE STARTUP MERGE LABS

OpenAI has invested in CEO Sam Altman's brain-computer interface startup, Merge Labs. Merge Labs is dedicated to bridging biological and artificial intelligence to maximize human ability. It intends to develop entirely new technologies that connect with neurons using molecules instead of electrodes to transmit and receive information using deep-reaching modalities like ultrasound. OpenAI believes that brain-computer interfaces will create a natural, human-centered way for anyone to seamlessly interact with AI.

techcrunch.com · 5 min

TLDR AI

CHINESE AI DEVELOPERS SAY THEY CAN'T BEAT AMERICA WITHOUT BETTER CHIPS

Some elite Chinese AI researchers estimate that the country's chances of catching up to the US are slim in the short run due to a bottleneck in chips. US rules block the direct sale of Nvidia chips to China. Chinese companies can rent Nvidia chips in third countries, but this typically leaves developers with fewer chips and more inconvenience compared with well-funded competitors in the US. The US recently unblocked sales of Nvidia's H200 chip to China, but this is not likely to be a game-changer in helping Chinese companies catch up.

links.tldrnewsletter.com · 5 min

TLDR Dev

THE DESIGN & IMPLEMENTATION OF SPRITES

Sprites is a platform of Linux virtual machines. These Sprites offer instant creation (1-2 seconds), root access, 100GB of durable storage, and automatically sleep during inactivity. Their unique capabilities come from certain design decisions: eliminating user-facing container images, using S3-compatible object storage for persistent disks, and using an "inside-out orchestration" model where much of the management occurs within the VM itself.

fly.io · 12 min

TLDR InfoSec

A SINGLE CLICK MOUNTED A COVERT, MULTISTAGE ATTACK AGAINST COPILOT

Varonis researchers discovered a now-patched vulnerability in Microsoft Copilot Personal, dubbed "Reprompt," that enabled single-click data exfiltration via indirect prompt injection in legitimate Copilot URLs. The attack allowed the extraction of usernames, locations, and chat history even after the victim closed the chat window. Microsoft 365 Copilot was not affected. The vulnerability has been remediated as of this week.

arstechnica.com · 4 min

TLDR Crypto

CME ADDS CARDANO, CHAINLINK, AND STELLAR FUTURES TO DERIVATIVES SUITE

CME Group will list futures (standard and micro contracts) for Cardano, Chainlink, and Stellar starting February 9 to broaden its regulated crypto derivatives offering beyond Bitcoin, Ether, XRP, and Solana. Clients are looking for trusted products to manage price risk, even as overall crypto derivatives volumes cooled into year-end. The move also ties into CME's longer-term push toward “always-on” continuous trading for round-the-clock global markets.

links.tldrnewsletter.com · 2 min

TLDR

APPLE IS FIGHTING FOR TSMC CAPACITY AS NVIDIA TAKES CENTER STAGE

TSMC's CEO recently told Apple executives that they would need to acquiesce to the largest price rise in years. Apple once held a dominant position on TSMC's customer list, but it is now fighting for production capacity. Its chip designs are no longer guaranteed a place among TSMC's almost two dozen fabs. TSMC's largest client is now likely Nvidia.

culpium.com · 11 min

TLDR

TESLA RELEASES RARE LOOK AT ITS LITHIUM REFINERY, CONFIRMS PRODUCTION START

Tesla's massive lithium refinery in Corpus Christi, Texas, has officially started production. The company has released a new video, available in the article, showing off the new site. Tesla's process is acid-free and produces a benign co-product that can be used in concrete mixes. The process is more sustainable than traditional methods and eliminates hazardous byproducts.

electrek.co · 4 min

TLDR

NASA'S FIRST MEDICAL EVACUATION FROM SPACE ENDS WITH ON-TARGET SPLASHDOWN

Four astronauts returned to Earth early after one of the crew members encountered an unspecified medical issue last week. They splashed down in the Pacific Ocean off the coast of San Diego at 08:41 UTC on January 15. Officials have not identified whose health was in question or what was afflicting the ailing crew member. The medical issue did not appear to affect the crew's return to Earth, and they exited the spacecraft appearing in good health and good spirits.

arstechnica.com · 6 min

TLDR

OPEN RESPONSES

Open Responses is an open-source spec for building multi-provider, interoperable LLM interfaces on top of the original OpenAI Responses API. It is multi-provider by default and extensible without fragmentation. Useful for real-world workflows, Open Responses can be used to build agentic systems without rewriting the stack for every model. Examples of projects built with Open Responses are available in the thread.

threadreaderapp.com · 2 min