Top startup launches for May 2026

Grok Build is now available in Beta for all SuperGrok and X Premium+ users. Use Plan Mode, create images and videos with Imagine, and build automations or orchestrators with the CLI. Visit https://t.co/bpTHpjivWD to get started. https://t.co/OZ0kjtkpUf

Introducing Composer 2.5, our most powerful model yet. It's more intelligent, better at sustained work on long-running tasks, and more reliable at following complex instructions. For the next week, we’re doubling the included usage of the model. https://t.co/N87ojcXlOC

We’re giving away $10,000,000 to founders building agent-first businesses. Autonomous, proactive agents will run tomorrow's companies. We're backing 500 founders building them. The Founding 500. https://t.co/u8mxRWEXiT https://t.co/chZDnNOnlM

We live in a golden age of biology. So why are people still dying from disease? Because discovery and development move slower than they should. Today, we’re partnering with Incyte to change that. Kosmos is now the first agent that can compress months of drug development into https://t.co/j0WGDtBNdO

Between rooms. On rounds. Walking the corridor outside an OR. Charting one-handed during a phone call. This is where clinical questions happen. Today we're launching Voice Mode. OpenEvidence is the first multimodal medical AI: physicians can type, speak, or listen, on the same https://t.co/OPx9sB8C4u

Polsia just raised $30M at a $250M valuation. Approaching $10M annual run rate. One Founder + AI. Zero employees. Polsia runs companies autonomously. It also ran its own fundraising. I just showed up for signatures. https://t.co/6ryypKG0GY

AI is making kids dumber. It should be making them geniuses. Introducing Koji, the first AI tutor that gets kids to actually think. 👇 https://t.co/tmCdVoEZYF

Announcing Cofounder 2: Run an entire company with agents. It's the infrastructure for the one person billion dollar company - orchestrating agents across engineering, sales, marketing, ops, and design. (and yes that's my real grandma in the video) https://t.co/z1e7yHyvEg

Introducing Co-Invest. (@coinvestai) The first way to trade directly through ChatGPT and Claude. https://t.co/rWnn4JWUyn

Introducing GPT-Realtime-2 in the API: our most intelligent voice model yet, bringing GPT-5-class reasoning to voice agents. Voice agents are now real-time collaborators that can listen, reason, and solve complex problems as conversations unfold. Now available in the API https://t.co/2DY1LU2vO8

Last month we launched Project Glasswing, our collaborative AI cybersecurity initiative. Since then, we and our partners have found more than ten thousand high- or critical-severity vulnerabilities in essential software.

Introducing OpenAI Guaranteed Capacity: a new offering that enables customers to guarantee long-term access to OpenAI compute. We’ve made long-term investments in infrastructure, partnerships, and capacity planning to help customers scale reliably. Now, Guaranteed Capacity

Kuli (@kuli_ai) is the AI coworker that gives marketers their time back and makes them 10x more efficient. It watches all videos on socials to find the next trend and gets work done. Already live at Fortune 100 brands, it plans and runs their campaigns with creators. Congrats https://t.co/ge62ESE2KN

Today, we’re announcing Viktor’s $75M Series A, led by @Accel . @viktor__com was supposed to be a small experiment. It became the AI coworker 10x'ing real businesses. $15M in annualized revenue run rate. In 10 weeks. – Small companies saving millions of dollars – Sourcing https://t.co/adbqqwRZju

Introducing Libra AI, the SOTA super agent that amplifies your work, enabling you to bring your best everyday. Your work life will never be the same starting today. > Libra understands all your data and context like a human teammate > Takes actions on your behalf > Replaces the https://t.co/UXuKQQyfDc

Today, RADAR announced a $170 million Series B, bringing our valuation to more than $1 billion. We believe Physical AI can transform the 80% of global commerce that still happens in stores.  Retailers lose an estimated $1 trillion each year because their stores lack real-time https://t.co/g1DXUa3JcY

We raised $5.4M to make paid ads run themselves. Introducing Playad, the world's first AI marketing team. First up: paid ads, run by AI. https://t.co/3NOGUBTrcM

Nobody believes in you, so make them. Announcing our $7M seed round led by @Slow. https://t.co/0rXH4iRfN8

Introducing Voyager Gateway 1. Warfighters at the edge need access to mission compute capabilities that are typically constrained to the base. The size, weight and power burden make server racks unrealistic options. Voyager G1 is the rugged, waterproof device that unlocks https://t.co/2bB5svR5jY

Attention, all you geniuses with products, but no marketing skills. Today we’re launching the Founder Starter Kit—4 skills that will help you look and sound like a legit company, including: > Build-a-Brand > App Screens > Product Sizzle > Founder Video Available for Claude via https://t.co/p9uqgaIiFl

grok-build-0.1 is now available via the xAI API in public beta. This is the same model that powers the Grok Build CLI and excels at agentic coding. Priced at $1/m input and $2/m output, it’s extremely cost effective, intelligent, and fast. https://t.co/2ZtqWM2QLU

We raised $30M for this moment. Today, we launch Conversion Agents. The first marketing platform where AI agents do the work and your team does strategy. We call it vibe marketing. Marketing teams spend 50%+ of their time on monotonous work. Conversion Agents cut that to 5%. https://t.co/ASsQ2M1b3p

Now Live: Dhan App on iPad! And over the past few years, one request kept finding its way back to us consistently - "When will Dhan be available on iPad?" Today, we are launching the Dhan Experience for your iPad. 🧵 https://t.co/cJ1SMK1Lqd

Until now, physicians using AI in clinic had to assemble the patient’s context themselves. Allergies, comorbidities, medications, prior procedures, copy-pasted in from the chart. Today we’re announcing a partnership with @CedarsSinai. OpenEvidence now works directly inside Epic, https://t.co/H4SzzydVrX

Today, we're excited to launch AI Coverage (insurance for when your AI messes up). Insurance was built for risks that have existed for decades. AI is creating a new category very quickly. https://t.co/IGsBvofFBC

BIG one for devs today. Introducing the Notion Developer Platform: - Notion CLI, ntn (Notion in your terminal) - Workers (run code on Notion's infra) - Database sync (any data source into Notion) - Agent tools (build any workflow) - Webhook triggers (trigger Notion from any app) https://t.co/7QEKetrWWf https://t.co/gCv71844gQ

Highlights from today’s Codex Thursday launches: 1️⃣ Codex can now securely use apps on your Mac from your phone, even when your Mac is locked and the screen is off. https://t.co/JUOss3M2Va https://t.co/CAEUe1aswm

Today we're launching Perplexity Computer for Professional Finance. Finance teams can bring licensed data from providers like Morningstar, PitchBook, Daloopa, and Carbon Arc into Computer. We’ve also added 35 dedicated finance workflows for the work analysts repeat every week. https://t.co/AfWvC2FOpA

We just crossed $10M in ARR at @Chatbase! 🎉 🎉 And today, we're launching Chatbase as the full harness for customer-facing AI agents. Similar to how Claude code is a harness for coding agents, Chatbase is the harness for customer experience agents. That means we give the https://t.co/7B7uFGt6Vh

Introducing Gemini 3.5: our newest family of models combining frontier intelligence with real-world action. The first release is 3.5 Flash, our strongest model yet for agents and coding 🧵 https://t.co/A3RXdyjIz2