‹ rbtfl.

Together AI raises $800M Series C at $8.3B valuation, led by Saudi Aramco's venture arm

The AI neocloud, which rents GPU clusters for open-source model inference, has tripled its platform usage year-on-year and now books over $1 billion annually; Aramco Ventures leads the round alongside NVIDIA, General Catalyst and Vista Equity

AI·スタートアップ· active 誰の金か·長期戦 ·8 論調 · ·rbtfl 更新 2026年7月3日

Summary

Together AI announced on July 1 an $800 million Series C at an $8.3 billion post-money valuation, the largest single neocloud funding round of 2026. Aramco Ventures, the VC arm of Saudi Aramco, led the round; co-investors include Vista Equity Partners, General Catalyst, Emergence Capital, NVIDIA, March Capital, Pegatron and SentinelOne's S Ventures. Together AI rents Nvidia GPU clusters for model inference, focusing on open-source models. It now books over $1 billion in annual revenue, with platform usage tripling over the past year. The company plans to expand its infrastructure footprint roughly 50-fold in five years. The previous Series B raised $305 million at a $3.3 billion valuation 16 months ago.

The split

TechCrunch and US tech press framed this as a competitive neocloud story, Together AI versus CoreWeave and Lambda Labs, with the open-source-vs-closed-API debate as the market driver. The Next Web and European outlets centred the Aramco Ventures angle: a petro-state's sovereign capital arm leading a US AI infrastructure bet is a geopolitical signal, not just a financial one, reflecting the Gulf's deliberate strategy of converting hydrocarbon revenues into AI-age positioning. Pegatron's inclusion, a Taiwanese electronics manufacturer, is largely unreported in Western coverage but points to supply-chain integration between neocloud compute buildout and Asian hardware production. South African VentureBurn noted the absence of African VC or usage in the funding narrative.

By the numbers

  • $800M raised; $8.3B post-money valuation (vs. $3.3B Series B, 16 months ago).
  • $1B+ annual bookings; open-source model usage tripled year-on-year.
  • 50x planned infrastructure capacity expansion over five years.
  • Lead investor: Aramco Ventures (Saudi Aramco's VC arm).
  • Co-investors include NVIDIA, General Catalyst, Vista Equity, Emergence Capital, March Capital, Pegatron, SentinelOne.

Why it matters

The round confirms the enterprise shift toward open-source AI inference, a structural move away from reliance on closed-API frontier models. Aramco's lead position is the story-within-the-story: Gulf sovereign capital is now a primary financier of US AI infrastructure, mirroring earlier sovereign wealth fund stakes in semiconductor and cloud plays. If open-source inference scales as Together AI projects, it narrows the pricing and capability moat that closed-model labs like OpenAI and Anthropic currently enjoy.

What to watch

  • Whether Together AI uses the capital to lock in long-term NVIDIA GPU allocation ahead of rivals.
  • Pegatron's potential role as a hardware partner, not just a financial LP.
  • Aramco Ventures' next AI infrastructure bet: the round pattern suggests a portfolio strategy, not a one-off.
  • Open-source inference market share versus closed-model API providers over the next 12 months.