Inferact
Frontier inference you control, optimised for your models and hardware.
Ranked #8 in Best Open-Source AI Startups.
Inferact is a production inference platform founded by the creators of vLLM. It allows teams to control frontier model deployment across their own or provider compute.
At a glance
| Best for | AI engineering teams requiring high-performance inference |
From Inferact's own website.
Company facts
| Social profiles | X |
Facilities and features
Its website also mentions:
- SOC 2
- GDPR
What stands out
The AI tool provides day-zero support for new models and hardware.
“The engineers who created and maintain vLLM tune your inference for leading performance. Control over your stack”Inferact, own website
The AI tool offers autoscaling to reduce unnecessary compute spend.
“Scale up or scale down compute based on demand to reduce unnecessary compute spend. FRONTIER TUNING”Inferact, own website
How it ranks
Inferact is ranked 8th of 10 in Best Open-Source AI Startups (Lister Score 88.3).
#8 in Best Open-Source AI Startups · Lister Score 88.3
Inferact, founded in San Francisco by the creators and maintainers of the open-source vLLM inference engine, funds vLLM development and is building a commercial inference product on top of it. It raised a $150 million seed round in January 2026, led by Andreessen Horowitz and Lightspeed, at an $800 million valuation.
Inferact says vLLM has a community of more than 2,000 contributors..
| 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 Inferact rank on Lister?
Inferact is ranked 8th of 10 in Best Open-Source AI Startups (Lister Score 88.3).
Appears in
- #9 in SOC 2 compliant LLM observability tools · AI
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