Together

GPU Cloud / Infra

Together AI is an AI infrastructure company that operates an AI Native Cloud platform, providing developers with access to open-source models and the compute power needed to train and deploy them.

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Together AI provides a cloud platform for developers to access, train, and deploy open-source AI models using its own GPU infrastructure and API services.

Together AI is an AI infrastructure company that operates an AI Native Cloud platform, providing developers with access to open-source models and the compute power needed to train and deploy them. Founded in 2022 by Vipul Ved Prakash, the company has rapidly scaled, reporting $1.0 billion in revenue for 2026, a 61.81% year-over-year increase, according to PM Insights. The company raised a $305 million Series B in February 2025 at a $3.3 billion valuation, and a subsequent Series C in April 2026 that brought its post-money valuation to $8.5 billion, with total funding reaching $533.5 million.

Together AI serves thousands of customers and supports over one million developers, with notable clients including Cursor, Decagon, Cartesia, Cohere, and DeepMind. The company's revenue is split between per-token API usage and GPU server rentals, with the latter historically sourced from providers like CoreWeave and Lambda but increasingly from its own data centers, such as a facility in Maryland that went live in July 2025. This mix yields approximately 45% gross margins.

The company's research lab, led by the creators of FlashAttention and ThunderKittens, has produced a series of technical innovations, including FlashAttention-4, which delivers up to 4x performance improvements at long sequence lengths. In March 2026, Together AI hosted its first AI Native Conf conference, where it announced a Reinforcement Learning API, ThunderAgent, and ATLAS-2. The company also joined the U.S.

Department of Energy's Genesis Mission in April 2026. Together AI's primary competition includes other GPU cloud providers like CoreWeave and Lambda, as well as the major cloud providers' AI platforms.

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Who buys this

  • AI-native startups building and scaling generative AI applications
  • Large enterprises requiring production-scale inference and model training
  • Research organizations and academic institutions working on AI model development
  • Companies needing fine-tuning and reinforcement learning services for custom models

Publicly disclosed clients

  • Cursor
  • Decagon
  • Cartesia
  • Cohere
  • DeepMind
  • Salesforce
  • Zoom

Strengths and what to watch

Strengths

  • Strong research team responsible for foundational technologies like FlashAttention, which are widely adopted in the industry.
  • Rapid revenue growth, from $30 million annualized in early 2024 to $1.0 billion in 2026, demonstrating strong product-market fit.
  • Deep strategic partnerships and investments from key industry players, including Nvidia, Salesforce, and General Catalyst.

Watch for

  • Heavy reliance on Nvidia GPUs for its infrastructure, creating supply chain and pricing risk.
  • Gross margins of ~45% are relatively low for a cloud platform, and may face pressure as competition from major cloud providers intensifies.
  • The company's valuation has increased dramatically in a short period, and its ability to sustain growth and justify its $8.5 billion valuation is unproven.

Recent moves

Key Information

Industry
GPU Cloud / Infra
Founded
2022

Frequently Asked Questions

What is Together AI?

Together AI is an AI infrastructure company that provides a cloud platform for developers to access, train, and deploy open-source AI models using its own GPU infrastructure and API services. It was founded in 2022 by Vipul Ved Prakash.

How does Together AI make money?

Together AI generates revenue through per-token API usage fees and GPU server rentals. The company also increasingly uses its own data centers, such as a facility in Maryland that went live in July 2025, to support its infrastructure and improve gross margins.

Who are Together AI's main customers?

Together AI serves thousands of customers, including notable clients like Cursor, Decagon, Cartesia, Cohere, DeepMind, Salesforce, and Zoom. Its customer segments range from AI-native startups and large enterprises to research organizations and academic institutions.

What is Together AI's valuation and funding history?

Together AI raised a $305 million Series B in February 2025 at a $3.3 billion valuation, followed by a Series C in April 2026 that brought its post-money valuation to $8.5 billion. Total funding has reached $533.5 million.

What are Together AI's key research innovations?

Together AI's research lab, led by the creators of FlashAttention and ThunderKittens, has produced innovations like FlashAttention-4, which delivers up to 4x performance improvements at long sequence lengths. These technologies are widely adopted in the industry.

What risks does Together AI face?

Together AI relies heavily on Nvidia GPUs, creating supply chain and pricing risks. Its gross margins of around 45% are relatively low for a cloud platform, and competition from major cloud providers may intensify. The company's rapid valuation growth also remains unproven.

Sources

  1. www.prnewswire.com — Revenue milestones, customer count, developer count, product announcements at AI Native Conf
  2. www.pminsights.com — 2026 revenue of $1.0B, year-over-year growth rate, valuation, funding rounds, secondary market data
  3. sacra-pdfs.s3.us-east-2.amazonaws.com — Revenue breakdown, gross margins, funding history, valuation, product description
  4. finance.yahoo.com — Series B funding details, valuation, investor list, annualized revenue figures for 2024
  5. techcrunch.com — Context on AI startup funding landscape in 2026
  6. www.together.ai — Product offerings, customer logos, company positioning