About
Together AI provides cloud infrastructure for open-source AI inference and fine-tuning. Raised $305M Series B at $3.3B valuation from General Catalyst, NVIDIA, and Kleiner Perkins. Grew to 450K+ developers in 2024. Estimated $300M ARR in 2025. Supports 200+ open-source models with inference 10x faster than DeepSeek's own API. Founded by FlashAttention creator Tri Dao and Stanford researchers. Acquired CodeSandbox in 2024.
Key Facts
- [1]Funding: Total funding: $534M. Last round: Feb 2025. Stage: Late Stage.
- [2]Employees: Employee count: 51-200.
- [3]Website: Official website: together.ai.
- [4]AI Technology: Core AI/ML technologies: Infrastructure.
- [5]Region: Region: Americas (United States).
Founders
Vipul Prakash
Co-founder & CEO
Ce Zhang
Co-founder & Chief Scientist
AI Technology
Infrastructure
AI/ML infrastructure, compute networks, and tooling
Classification
Market Segments
Tech Stack Layers
Details
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Frequently Asked Questions
What is Together AI?
Together AI provides cloud infrastructure for open-source AI inference and fine-tuning. Raised $305M Series B at $3.3B valuation from General Catalyst, NVIDIA, and Kleiner Perkins. Grew to 450K+ developers in 2024. Estimated $300M ARR in 2025. Supports 200+ open-source models with inference 10x faster than DeepSeek's own API. Founded by FlashAttention creator Tri Dao and Stanford researchers. Acquired CodeSandbox in 2024. Together AI is classified in the Research & Data segment at the Infrastructure layer of the financial AI stack.
Who founded Together AI?
Together AI was founded by Vipul Prakash (Co-founder & CEO) and Ce Zhang (Co-founder & Chief Scientist).
How much funding has Together AI raised?
Together AI has raised $534M in total funding, placing the company at the Late Stage stage. The most recent round closed in Feb 2025. Among 58 funded Research & Data companies, Together AI ranks #10 by total capital raised. (Source: AIFI Map directory.)
What AI technology does Together AI use?
Together AI primarily leverages Infrastructure technology. AI/ML infrastructure, compute networks, and tooling. Within the Research & Data segment, 10 companies use this technology.
What market segment does Together AI operate in?
Together AI operates in the Research & Data market segment. AI research and data companies provide the intelligence layer of the financial ecosystem — processing vast quantities of structured and unstructured data into actionable insights for investors, analysts, and financial institutions.
Where is Together AI headquartered?
Together AI is headquartered in San Francisco, United States. The company operates in the Americas region. The team consists of 51-200 employees. United States is home to 324 financial AI companies tracked by AIFI Map.
Who are Together AI's competitors?
Companies similar to Together AI in the Research & Data space include Stripe ($9.8B raised), Natural ($10M raised), Catena Labs ($18M raised), Tegus ($112M raised), AlphaSense ($1.6B raised). These companies operate in related areas of financial AI: Stripe focuses on ai-powered payments platform with fraud detection. Natural focuses on payments infrastructure for ai agent transactions. Catena Labs focuses on building payment rails for ai agents. (Based on AIFI Map classification data.)
What products does Together AI offer?
Together AI builds infrastructure-layer solutions for the financial services industry. The company's core offering: Open-source AI inference. The platform is powered by Infrastructure technology.