Together AI

About Together AI

Financials

Dated, source-cited figures. Estimates are marked.

Products by Together AI

All products by Together AI reviewed by our AI panel of experts.

Together AILLM Platforms

Open-source AI platform for building and deploying machine learning models

From $0/mo8.0/10

How Our Review Panel Scores Together AI

Six independent reviewer personalities assessed Together AI's product on their own terms. They landed within 0.7 points of each other, an unusually strong consensus.

Averaged across 1 reviewed product in our catalog. Scores are out of 10.

Competitive Landscape

Who Together AI competes with, and how they differ.

Fireworks AI8.0/10

Fireworks AI is the closest direct competitor: speed-optimized serving of open-source and custom LLMs for enterprise customers with dedicated deployments, at a similarly aggressive per-token pricing model.

1 product reviewed on TopReviewed

Replicate8.0/10

Replicate covers a broader long-tail catalog spanning image, video, and audio models beyond text LLMs and bills per second of GPU time, whereas Together AI focuses on high-throughput inference and fine-tuning for a curated set of popular open-source LLMs.

1 product reviewed on TopReviewed

Hugging Face8.9/10

Hugging Face is built around its open model and dataset hub and developer community first, with Inference Endpoints as one product among many, while Together AI is an infrastructure-first commercial cloud built specifically for serving and fine-tuning open models at scale.

1 product reviewed on TopReviewed

RunPod8.1/10

RunPod rents raw GPU pods and serverless compute by the second for teams that manage their own inference stack, whereas Together AI sells managed, API-based inference and fine-tuning on top of its own GPU clusters.

1 product reviewed on TopReviewed

Groq7.7/10

Groq runs its own custom LPU chips to deliver ultra-low-latency inference on a narrower set of popular open models, competing with Together AI primarily on raw token-generation speed rather than breadth of models or fine-tuning tooling.

1 product reviewed on TopReviewed

OpenRouter8.1/10

OpenRouter is a routing and billing layer that proxies requests to many third-party model providers, including Together AI itself, under one API key, rather than operating its own inference infrastructure.

1 product reviewed on TopReviewed

Company Timeline

Key milestones in Together AI's history, with sources.

1. Aug 11, 2026Partnership

   IBM–Together AI multi-year deal for NVIDIA B300 inference cluster

   IBM and Together AI signed a multi-year agreement, reported at roughly $240 million, to deploy an NVIDIA B300 GPU-based AI inference cluster and scale open-source AI inference on IBM Cloud.

   news.google.com
2. Jul 1, 2026Funding

   Series C — $800M led by Aramco Ventures at $8.3B valuation

   Together AI raised an $800 million Series C round led by Aramco Ventures, valuing the company at $8.3 billion, to scale its open-source AI inference and training cloud.

   news.google.com
3. Feb 20, 2025Funding

   Series B — $305M led by General Catalyst at $3.3B valuation

   Together AI raised a $305 million Series B round led by General Catalyst, more than doubling its valuation to $3.3 billion to scale its AI Acceleration Cloud for open-source and enterprise AI.

   news.google.com
4. Mar 13, 2024Funding

   Raised $106M led by Salesforce Ventures at $1.25B valuation

   Together AI raised $106 million in a Salesforce Ventures-led round, valuing the company at $1.25 billion as it expanded its generative AI cloud platform.

   news.google.com
5. Nov 29, 2023Funding

   Series A — $102.5M to scale open-source generative AI cloud

   Together AI closed a $102.5 million Series A round to scale its cloud platform for training and serving open-source generative AI models.

   news.google.com
6. May 16, 2023Funding

   Raised $20M to build open large language models

   Together, the developer of the RedPajama open dataset project, raised $20 million to build open large language models at a scale comparable to Meta's LLaMA.

   news.google.com
7. Apr 18, 2023Launch

   Released RedPajama, an open reproduction of the LLaMA dataset

   Together AI released RedPajama, an open-source reproduction of the LLaMA training dataset (initially a 1.2 trillion-token corpus), aiming to enable fully open large language models.

   news.google.com
8. 2022Founded

   Together AI founded

   Together AI was founded in 2022 by Vipul Ved Prakash, Ce Zhang, Chris Ré, Tri Dao, and Percy Liang to build a full-stack AI acceleration platform for training and serving open models.

   together.ai