Together AI, an AI neocloud that rents out NVIDIA GPU clusters and AI-specific infrastructure, has raised $800 million in a Series C round that values the company at $8.3 billion, the startup announced on July 1, 2026.

The round was led by Aramco Ventures, with participation from Vista Equity Partners, General Catalyst, Emergence Capital, NVIDIA, March Capital, Pegatron, and SentinelOne's S Ventures, among others. The funding underscores the explosive growth of neocloud providers as enterprises increasingly seek cheaper alternatives to Big Tech cloud platforms for AI workloads. Stay current with the latest AI industry coverage from AI Buzz Wire.

A Rapid Rise in Valuation

The $8.3 billion valuation represents a dramatic jump from Together AI's previous $3.3 billion valuation during its $305 million Series B, raised roughly 16 months earlier. The company was well-funded from the start, having launched with a $102.5 million Series A led by Kleiner Perkins with participation from NVIDIA and Emergence Capital in 2023.

Reports from The Information in March 2026 indicated Together AI was originally seeking $1 billion at a $7.5 billion valuation. The final deal raised less capital but achieved a higher valuation, suggesting strong investor demand and favorable terms for the company.

$1.15 Billion in Annual Bookings

The funding round comes as Together AI reports annual bookings exceeding $1.15 billion as of its most recent quarter. The company attributes this growth to a fundamental shift in how enterprises consume AI: rather than paying premium prices for tokens on closed frontier models from companies like OpenAI and Anthropic, businesses are increasingly adopting competent but far less expensive open source models hosted on neocloud infrastructure.

Together AI says this shift has tripled usage of open source models across the industry in the past year, citing data from AI gateway company OpenRouter. The trend reflects a maturing AI market where open source alternatives from Meta, Mistral, DeepSeek, and others have narrowed the quality gap with proprietary frontier models.

A Founder's Track Record

Together AI was co-founded by Vipul Ved Prakash, who previously sold social media search platform Topsy to Apple in 2013 for a reported $200+ million. His co-founders are Stanford professor Percy Liang and ETH Zürich and University of Chicago associate professor Ce Zhang, giving the company deep academic roots in machine learning research.

The company counts thousands of paying customers among its clients, including prominent AI startups Cursor, Cognition, and Decagon. These customers rely on Together AI for access to GPU clusters and hosted open source models at price points significantly below what traditional cloud providers offer.

Neoclouds Are Hot

Together AI's megaround reflects a broader investor frenzy around neocloud providers. In June 2026 alone, Upscale AI raised $500 million in a Series A extension at a $2 billion valuation, while AMD-focused GPU cluster provider TensorWave secured $350 million in a Series B at a $1.55 billion valuation.

These companies occupy a critical niche in the AI ecosystem: they provide the compute infrastructure that makes open source AI economically viable. By specializing in AI workloads and operating leaner than hyperscale cloud providers, neoclouds can offer GPU access at lower margins while still maintaining profitability.

The investment from Aramco Ventures is also notable, signaling that Middle Eastern sovereign wealth is increasingly backing AI infrastructure as Gulf states diversify their economies beyond oil. Saudi Arabia and the UAE have both launched ambitious AI strategies, and investments in companies like Together AI provide both financial returns and strategic access to AI capabilities.

Stay Ahead of AI

For continued coverage of AI funding, infrastructure trends, and the open source AI movement, follow AI Buzz Wire.

Read more AI news →