Greenoaks

AWS partners with Superblocks to embed vibe coding

Superblocks, a vibe-coding startup, announced a multiyear joint marketing agreement with Amazon Web Services (AWS) to allow its tool to be embedded inside customers' private AWS clouds. The integration ensures apps built with Superblocks run inside an enterprise's AWS account (spinning up Amazon Aurora databases) and can integrate with Amazon Bedrock, keeping data inside corporate cloud environments. AWS will also assist in selling Superblocks via its partner channels. Superblocks has about 50 employees and had raised $60 million at Series A (announced May 2025), backed by Spark Capital, Kleiner Perkins, Meritech Capital and Greenoaks. The deal is an example of hyperscalers pushing enterprises to run AI/agentic tooling and orchestration inside their clouds to avoid data leakage and vendor lock-in.

Simile Raises $200M Series B at $2B Valuation

Simile, a startup that builds synthetic/simulated users for marketing and product research, raised $200 million in a Series B at a $2 billion valuation. The round, announced July 30, 2026, was led by Greenoaks with participation from Index Ventures, Hanabi, Bain Capital Ventures, A*, Factory, Definition and CVS Health Ventures. The raise comes five months after Simile's $100 million Series A led by Index. Simile was founded by Joon Sung Park and counts CVS among its customers. The company positions its technology as a way to simulate user behavior for research and product testing, attracting growing VC interest in the synthetic-user market.

Anthropic Now World's Most Valuable AI Startup

On May 28, 2026 Anthropic announced a $65 billion Series H round that implied a post‑money valuation of about $965 billion, making it the most valuable private AI startup at that time. The round was led by Altimeter Capital, Dragoneer, Greenoaks and Sequoia and sits on top of earlier hyperscaler commitments of roughly $15 billion (about $5 billion from Amazon). Anthropic reported a roughly $47 billion annual run‑rate in May, which the author argues provides revenue underpinning the valuation. A developer who relies on Anthropic describes the growth as driven largely by coding use cases (Claude Code) and warns of platform dependence: many small businesses become exposed to a vendor’s roadmap, pricing and priorities. The piece urges developers to keep workflows portable, focus on operating knowledge for coding agents, and treat models as replaceable components.