Tiago's Bookmarks

Cool Company Raises · $20.0M

Mithrl raises a $20.0M Series A round

Mithrl is an AI infrastructure company focused on the biopharma sector. It develops advanced platforms that utilize proprietary biomedical world models to optimize AI technologies. The company aims to enhance drug discovery and development through sophisticated AI-driven solutions.

Cool Company Raises · $15.0M

Liquid Compute raises a $15.0M Seed round

Liquid Compute is a marketplace company focused on building regulated venues for trading AI infrastructure. The company emerged from stealth with significant seed funding to further its mission. Founded by Ronit Jain and Aarav Patel, Liquid Compute aims to transform the way AI infrastructure is exchanged. It is a Y Combinator company that originated as Pluto.

Cool Company Raises · $15.0M

Scaffold raises a $15.0M Seed round

Scaffold is a software company that uses AI to automate coordination among trade contractors in the homebuilding industry. Its platform integrates with existing systems to improve communication and reduce errors in construction management. By streamlining processes, it enables contractors to focus on critical tasks rather than manual data entry. The company aims to transform the $500 billion homebuilding sector by linking disparate systems in a cohesive manner.

Cool Company Raises · $200.0M

Factory raises a $200.0M round

Factory is pioneering agent-native development, a new way of building software that keeps developers in control of the important high-level details while agents – or Droids – handle the coding. By shifting from autocomplete to delegation, Factory puts the orchestration and management of Droids into the hands of engineers and enables teams to ship faster, improve code quality, and embrace a new philosophy of working with AI. Founded in 2023 and headquartered in San Francisco, Factory is backed by investors including Sequoia Capital, NEA, NVIDIA, J.P. Morgan, Abstract Ventures, Mantis VC, SV Angel and BoxGroup.

Cool Company Raises · $40.0M

TypeSafe AI raises a $40.0M Seed round

TypeSafe AI is a frontier AI lab focused on building machine-native, composable AI. Founded by former OpenAI researcher Diogo Almeida and his team, the company aims to create a new class of intelligence that provides developers with efficient and reliable AI for integration into software systems.

Cool Company Raises · $5.0M

Interlune raises a $5.0M round

Interlune is a space resources company dedicated to leading the world in sustainable and responsible harvesting of natural resources from space, with the mission of benefiting humanity and advancing long-term scientific and economic progress.

Interesting · paulgraham.com

Making Startups Powerful

Cool Company Raises · YC F26

Papaya launches at YC (Fall 2026)

Papaya tunes AI agents that are already in production. You connect traces with a one-line SDK or hand over raw data, and it runs 200+ research-backed analyses across thousands of runs to find what is recurring — prompt and caching inefficiency, tool schema drift, context bloat and retrieval strategy, model selection and routing, retry loops and wasted API calls. Findings come back ranked by impact, each with the specific runs affected, an estimated effect on quality, latency and cost, and a confidence level, delivered into Slack, a dashboard or a PR. The company cites cost reductions up to 52%, latency improvements up to 61% and quality gains of +11%, and offers a free 24-hour audit. Founded in 2026 by Macy Mody, Niyaz Puzhikkunnath and Faiz Vadakkumpadath, Papaya has 3 employees in San Francisco.

Cool Company Raises · YC F26

Agent 37 launches at YC (Fall 2026)

Agent 37 runs coding agents as always-on hosted sandboxes, so you host neither the machine nor the state. One POST to /v1/instances provisions an isolated environment with its own URL that you can message across sessions; files, memory and connected tools stay put until you delete it. It runs Hermes, OpenClaw, Claude Code, Codex or a custom harness, in 2-8 vCPU / 4-16 GB sizes, with gVisor kernel-level isolation, encryption at rest and in transit, and SOC 2 Type I. There is no plan fee — compute meters by the minute at $0.0011 per vCPU-hour and $0.00096 per GB-hour of RAM, which puts a continuously running 2 vCPU / 4 GB sandbox near $4.76 a month. Founded in 2026 by Vishnu Krishnaprasad, based in New York City.

Cool Company Raises · $12.7M

BoomerangHR raises a $12.7M Seed round

BoomerangHR turns the people who leave a company into its next hires. The platform automates offboarding — exit compliance, COBRA, 401k rollovers, equipment returns — then keeps the relationship alive: verified alumni profiles, role matching, network engagement, and reporting on talent migration, re-engagement signals and sales opportunities. It plugs into existing HCM and ATS systems rather than replacing them. Founded and led by Jeff Wald in New York, BoomerangHR says hundreds of companies representing millions of alumni use it, with Warby Parker among the named customers. The $12.7M seed was co-led by Kalos Ventures and Album Ventures, with Monta Vista Capital, Capital Eleven and the Strada Education Foundation participating.

Cool Company Raises · $50.0M

Nuance Labs raises a $50.0M Series A round

Nuance Labs is a Seattle AI research lab building a full-duplex audiovisual foundation model for human conversation. Instead of chaining transcription, a language model, voice synthesis and animation together, a single unified system perceives and generates speech, facial expression and body language at the same time — so it reads the non-verbal cues in a live conversation and responds in the moment rather than after the turn ends. Founded by former Apple PhD researchers Fangchang Ma (CEO), Edward Zhang (CTO) and Karren Yang (Chief Scientist), with Yaser Sheikh advising. Target uses are sales, customer service, coaching, professional training and education, with a research preview due later in 2026. The $50M Series A was led by returning investor Lightspeed Venture Partners, with Accel and South Park Commons also returning and NVIDIA and Define Ventures joining.

Dev Tools · github.com

realiti4/claude-swap: Switch between multiple Claude Code accounts

Switch between multiple Claude Code accounts

Interesting · mathandai.org

Declaration — Math and AI

Read the declaration and add your name.

Interesting · huggingface.co

Security

Dev Tools · skills.sh

asd-ste100

ASD-STE100 Simplified Technical English, and the reply shape a reader with ADHD can act on. A standing style rule, not an on-request tool. Layer 1 governs the words of every text a human reads — chat replies, docs, READMEs, commit messages, PR text, code comments, error messages, release notes, tool descriptions, task trackers, wiki pages. Layer 2 governs the order of a reply to a person — the next action first, numbered steps, real time estimates, no preamble and no closer. Neither layer touches code, identifiers, or command syntax. Load it before you write prose, and also when asked to remove "AI slop", make writing clear or plain, enforce a controlled style, or review text for STE violations. Two word modes — strict (procedures, runbooks, safety text, error messages) and STE-flavored (general prose, the default).

Interesting · graybeard.ing

Software Drives People Insane

I have a little pet theory that software drives people insane. Not in the "wash your hands every thirty minutes like Howard Hughes" kind of way, but more ...

Cool Company Raises · YC F26

Vyra launches at YC (Fall 2026)

Vyra is an AI video editor that turns raw footage into finished video. You describe the edit in plain language — "cut my clips to the beat and make a color wheel edit" — and Vyra analyses the uploaded footage and returns a finished draft in minutes, with every conventional editing tool (split, ripple, slip, clone, motion graphics, text layers) available in the same conversation rather than buried in a timeline UI. It is built for people who are not editors but still have to ship video, and it connects to Claude, ChatGPT or any MCP client. Founded in 2026 in San Francisco by Caleb Pong (built neural networks for Omoggle, 3M+ users, and Adobe plugins; CS at Brown) and Sulan Zhang (CS and visual arts at Brown; 60k+ creator following as @sulansart). Y Combinator Fall 2026.

Cool Company Raises · $40.0M

Impossible Objects raises a $40.0M round

Impossible Objects, based in Northbrook, IL, makes Composite-Based Additive Manufacturing (CBAM) systems that bring 3D printing to industrial-scale production. Its CBAM 25 platform prints composite parts — including carbon fiber — at production speeds, standing in for CNC machining and injection moulding rather than for prototyping. Parts are stronger, more precise and geometrically more complex than other additive methods allow, across a wider range of materials. Customers include the U.S. Air Force, the U.S. Army's Rock Island Arsenal — where the technology can support production of up to 10,000 drone bodies a month — the National Institute for Aviation Research, the Oregon Manufacturing Innovation Center and Rochester Institute of Technology.

Cool Company Raises · $50.0M

Archy raises a $50.0M Series C round

Archy is an all-in-one cloud platform that replaces virtual servers and patchwork of specialized tools, enabling scheduling, charting, imaging, billing, insurance, payments, messaging, and reporting—all in real time, all in one place. The platform’s design allows practices to hire and quickly onboard non-dental professionals, while built-in AI-powered automation handles time-consuming tasks like insurance verification and patient communication, reducing overhead and optimizing efficiency.

Interesting · opusfived.dev

Opusfived

Make one button blue. Change nothing else. A short interactive comedy about agentic AI assistants that can never just do the thing.

Cool Company Raises · YC F26

Mirrors launches at YC (Fall 2026)

Mirrors builds runnable staging environments for AI agents. It captures production traces from an agent's real sessions, reconstructs a working twin of the internal tools and APIs that agent calls, then replays those sessions against every prompt, model or tool change before it ships — so regressions surface in staging rather than in production. The gap it fills is that agents call bespoke internal services no standard test suite can reproduce, which matters most where a mistake is irreversible: issuing refunds, updating records, sending outbound messages. Founded in 2026 in San Francisco by Aryan Singhal (ML research at UT Austin and UCSB; six AI/ML papers published while in high school, three at NeurIPS). Y Combinator Fall 2026.

Cool Company Raises · $15.0M

Piston raises a $15.0M Series A round

Piston is a cardless payments platform that connects commercial fleets with gas stations, founded by former fleet owners Vikram Sekhon and Shivam Shah. The company has created a secure payment system that eliminates card fraud and retail price markups. Piston aims to transform the fuel payment landscape by offering real-time insights and savings for both fleets and gas stations. Currently, Piston is serving over 120 fleets and 800 gas stations while processing more than $20 million in annualized transaction volume.

Cool Company Raises · $100.0M

Maven Robotics raises a $100.0M Series A round

Maven Robotics designs, builds, and deploys intelligent robotics for logistics and manufacturing. They created the world's first general-purpose robotics system for industrial work, integrating hardware, software, and AI across all layers. Their robots are designed for complex physical environments and rigorous commercial standards, focusing on industrial-grade reliability and scalability.

Cool Company Raises · $15.0M

R3 Lithium raises a $15.0M Series A round

R3 Lithium produces lithium carbonate from 100% recycled battery materials at its facility in Covington, Georgia. The company operates a 154,000-square-foot plant designed to recover lithium at commercial scale from battery manufacturing scrap and end-of-life batteries. R3's facility can process up to 30,000 metric tons of battery material annually and currently produces 2,500 metric tons of lithium carbonate per year. The company has secured approximately $1 billion in offtake agreements with customers including major trading firms.