Introducing Team Bots, shared AI teammates that learn as your team works with them. Give your Team Bot the skills, plugins, and credentials it needs for its role, then work with it in Slack or Grok Bot. https://t.co/73RrG4xpaU
AI Agents launch history
Top AI Agents launches from W4, September 22-30, 2026, ranked by X views.
W4, September 22-30, 2026

Introducing Claude Opus 5.5, the first model in our new Claude 5.5 family. It performs at the level of Claude Fable 5.1 for most tasks, and costs 40% less to run than Opus 5. https://t.co/Q9C2VKQ79f
Big day 🔥 🚀 Introducing Dolphin AI - an agentic AI studio for complete video production. The story of Dolphin is very interesting. It didn’t start as a product. It started as an internal tool. We started with one question: Why does AI video still struggle the moment you ask https://t.co/JXfFnMaJ9g

Introducing Claude Sonnet 5.5, the second model in the Claude 5.5 family. It’s a clear upgrade over Sonnet 5, runs more than 30% faster, and costs up to 30% less for most work. https://t.co/UvXD8mDTF1

Today we’re introducing Gemini 4 Argon. It delivers frontier performance in complex workflows across real-world software engineering, knowledge work, and cybersecurity defense with an industry-leading 1M token output limit. https://t.co/oDaCoOLu5E

Introducing Eleven v4 and Eleven v4 Turbo, our fastest and most emotive voice models yet. Ranked #1 by Artificial Analysis. https://t.co/gm8nAUMaQL
We're releasing HeyGen Video, built for businesses that need production-quality video without production-level costs. Pricing starts at $0.01/s through October (50% off) Built on @Minimax_AI H3, post-trained by HeyGen. Learn more: https://t.co/O7LDjVOlqH https://t.co/wIfXnTPOfB
You cross someone's life's work on your way to work. A bridge, a railway. Someone refused to give up to make it real. You probably don't know their name. We made a film about that. It gets from two bike mechanics to the moon, then a newsletter about solar panels. Sound on. https://t.co/IznfB7PIAD
BREAKING: Today, we witnessed the future of marketing. Introducing Citation Outreach A profitable company can add +$3M/month by ranking in ChatGPT and Claude. 12 months ago nobody believed AI search could drive this much revenue. This is absolutely insane. https://t.co/gQriwAOgQW
Introducing Alexandria. We raised a $75M Series B led by Smash Capital to build the world’s largest knowledge library for superintelligence. Supercharge your agents with instant access to the most powerful data sets & providers. https://t.co/ptd6I04Kmh https://t.co/qaEwrRuR8x