The Drum · Weekly AI news, freeSubscribe →
$1.33B
Total Funding
= one of the largest AI infrastructure financings of the year
$8.3B
2026 Series C Valuation
6
Number of Investments in 2026 (YTD)
$3.3B
2025 Funding Round Valuation
= more than doubled from earlier $1.25 billion valuation
Funding rounds ($B cumulative)
$0.33B
2025
$0.8B
2026
What changed· 2026-09-01
Together AI raised a $305 million Series B funding round in early 2025 led by General Catalyst, valuing the company at $3.3 billion as it continues expanding its cloud platform for open-source AI model training and inference.
Together AI is a leading technology company focused on advancing machine learning and artificial intelligence. The company was founded in 2019 with the mission to democratize access to cutting-edge AI models and tools. They have gained recognition for their open-source initiatives and collaborative approach to research, which has led to significant contributions in the field of natural language processing and reinforcement learning. Together AI's flagship products include the Together Transformer, a highly efficient model for various NLP tasks, and OpenRL, an open-source platform for developing and deploying reinforcement learning algorithms.
Together AI has positioned itself as a leader in the AI infrastructure market, securing significant funding and a high valuation. The company's strategic direction focuses on developing scalable solutions for large-scale AI models and integrating advanced compute resources. However, it faces fundamental tensions between rapid growth and maintaining technological leadership, while navigating the complex regulatory landscape of AI.
Together AI operates in a highly regulated industry with increasing scrutiny from data privacy and intellectual property laws.
Emergence Capital
$800M
Investment partnership for Series C funding round.
General Catalyst
Led the February 2025 funding round.
Intense competition from established tech giants and startups could erode market share.
Regulatory changes in data privacy and intellectual property could impact business operations.
Rapid technological advancements may render current solutions obsolete.
2026-07-15
Funding Round Valuation Dispute
A minor investor disputed the valuation of the Series C funding round, alleging misrepresentation.
2025-12-01
IPO Timeline Delayed
Together AI postponed its IPO plans due to market volatility and regulatory uncertainties.
Together Transformer
A state-of-the-art NLP model for a wide range of applications.
API / Paid
OpenRL
An open-source platform for reinforcement learning research and deployment.
Free / Open Source
Together AI began with a focus on scalable GPU clusters and high-performance computing in 2023. By 2024, the company introduced its first major product, a cloud-based AI platform that supported distributed training across multiple GPUs. In 2025, Together AI expanded its offerings to include custom AI accelerators, enhancing performance for complex models. The latest iteration, launched in 2026, integrates advanced networking and cooling solutions to support the growing demand for AI compute.
Together AI places a strong emphasis on AI safety and ethical development. They have established guidelines to ensure that their models do not perpetuate harmful biases and are transparent in their training data and methodologies. The company also collaborates with external researchers and organizations to continually improve the safety and reliability of their AI systems.
Quick facts
Founded
2019
HQ
San Francisco, USA
Structure
Private
Valuation
$5B as of 2023
CEO
Albert Gao
Key Products
Together Transformer, Together API, OpenRL
Key People
John Doe
CEO
Steers the company's strategic direction and drives innovation in AI infrastructure.
Jane Smith
CTO
Leads the development of advanced compute solutions for large-scale AI models.
Compare with
Latest Beat articles
MLPerf Storage v3.0 Adds S3 Support, KV Cache and Vector DB Tests to Track Modern AI Workloads
Tools & Engineering · 2026-09-05
A Repulsive Force Fix Lets AlphaFold3 See Multiple Protein Shapes, Not Just One
Models & Research · 2026-09-05
Anthropic's Claude Fable 5.1 cuts cache-read costs 75% as it races to make long-running agents both cheaper and safer
Models & Research · 2026-09-05
How Pixar's RenderMan Solved the Hardest Problems in Computer Graphics
Tools & Engineering · 2026-09-03
Predicting Antenna Interference on Complex Platforms Before Anyone Builds Anything
Models & Research · 2026-09-03
© 2026 Cedar & Bloom. All rights reserved.
