Together AI is an open-source AI platform providing full-stack infrastructure for production workloads. It offers high-performance inference, fine-tuning, and compute resources powered by cutting-edge research.
At a glance
| Best for | AI engineering teams building production-scale applications |
From Together AI's own website.
Company facts
| Founded | 2022 |
| Social profiles | LinkedIn, X, GitHub |
Facilities and features
Its website also mentions:
- Published pricing
- API
What stands out
The AI tool provides serverless inference with no infrastructure management required.
“The fastest way to run open-source models on demand.”Together AI, own website
The AI tool enables managed fine-tuning jobs without managing training infrastructure.
“Fine-tune open-source models for production workloads, using the latest research techniques. Improve accuracy, reduce hallucinations, and control behavior — without managing training infrastructure.”Together AI, own website
How it ranks
Together AI is ranked 3rd of 10 in Best Open-Source AI Startups (Lister Score 94.8).
#3 in Best Open-Source AI Startups · Lister Score 94.8
Together AI, founded in 2022 in San Francisco, runs a cloud for training, fine-tuning and serving open-source models. It raised an $800 million Series C in July 2026.
Together says customers include Cursor, Decagon, ElevenLabs and Suno, and that Decagon cut its inference costs sixfold..
| Rank | Best Open-Source AI Startups | Score |
|---|---|---|
| 1 | Mistral AI | 97.3 |
| 2 | Moonshot AI | 96.0 |
| 3 | Together AI | 94.8 |
| 4 | Black Forest Labs | 93.5 |
| 5 | Reflection AI | 92.2 |
| 6 | Ollama | 90.9 |
| 7 | LangChain | 89.6 |
| 8 | Inferact | 88.3 |
| 9 | Nous Research | 87.0 |
| 10 | Stability AI | 85.7 |
Frequently asked questions
How does Together AI rank on Lister?
Together AI is ranked 3rd of 10 in Best Open-Source AI Startups (Lister Score 94.8).
Appears in
- #6 in LLM gateways with a free trial · AI
- #7 in LLM API providers with a free plan · AI
- #7 in LLM evaluation tools with a free plan · AI
- #8 in LLM gateways with a free plan · AI
- #9 in LLM gateways for startups · AI
- #10 in Best AI inference platforms · AI
Add this badge to your site
If you work at Together AI, paste this code into your website to show where it ranks on Lister. The badge links to the ranking and updates within a day when the rank changes.