Baseten raises $1.5B at $13B valuation for AI inference

Key Takeaways

• Baseten raised $1.5 billion at a $13 billion valuation, led by Sands Capital and Wellington Management
• Australian VC firm Blackbird made its largest single investment ever in the round
• The company claims 20x revenue growth over the past year as AI inference demand surges

Baseten, a California-based AI infrastructure startup, has raised $1.5 billion in a funding round that values the company at $13 billion. The deal marks the fourth capital raise in 18 months for the company, which sells software and compute infrastructure that lets businesses deploy AI models without relying on OpenAI or Anthropic.

Sands Capital and Wellington Management led the round. Australian venture capital firm Blackbird VC participated with what it calls its largest investment ever, though it declined to specify the amount. Blackbird partner Michael Tolo said the outlay may be the biggest to date by any Australian VC firm.

What does Baseten actually sell?

Baseten provides infrastructure for AI inference, the stage where trained models generate outputs in real-world applications. When a customer sends a prompt to an AI assistant, or an app runs image recognition on a photo, that's inference. Training gets the headlines, but inference is where most compute costs pile up over time.

The company positions itself as a cheaper alternative to building on top of OpenAI or Anthropic APIs. Businesses can bring their own models, whether open-source or proprietary, and Baseten handles the deployment, scaling, and infrastructure management. This appeals to companies that want more control over their AI stack or are running specialized models that don't fit neatly into off-the-shelf APIs.

Why is inference suddenly attracting massive capital?

Training a large language model is a one-time cost, measured in millions or billions of dollars. But every time that model answers a question, it costs money. As AI applications scale from demos to production workloads serving millions of users, inference costs dominate. This shift has created a gold rush for companies promising to make inference faster, cheaper, or easier to manage.

Tolo framed Baseten's position bluntly: the company competes with OpenAI and Anthropic on price, and "this is the biggest shift that we've seen in both unit economics and competitive leverage within the AI market so far." That's a bold claim, but it reflects a real tension in the market. Many enterprises have balked at the per-token pricing of frontier model providers, especially for high-volume use cases.

Who founded Baseten?

The company was co-founded by Australians, which explains Blackbird's interest. The firm has built its reputation backing Australian founders building global companies, including Canva and SafetyCulture. A $13 billion valuation puts Baseten in rare company, regardless of the founders' nationality.

Baseten said it will use the funds to expand computing capacity, software, and hiring. The standard playbook for infrastructure companies: more GPUs, more engineers, more data centers.

How does this fit the broader AI funding picture?

The $1.5 billion round is one of the largest AI raises of 2025 so far. It comes as investors increasingly favor infrastructure plays over application-layer startups. The logic is straightforward: regardless of which AI applications win, someone has to provide the underlying compute and deployment tools. Baseten is betting it can be that someone for the inference layer.

Four funding rounds in 18 months is an aggressive pace. It suggests either extraordinary growth or extraordinary capital requirements. The 20x revenue growth claim supports the former interpretation, though the company hasn't disclosed absolute revenue figures.

Frequently Asked Questions

What is Baseten?

Baseten is a California-based startup that provides infrastructure for deploying AI models. Companies use it to run their own models in production without managing the underlying compute and scaling complexity.

How much did Baseten raise?

Baseten raised $1.5 billion in its latest round, valuing the company at $13 billion. Sands Capital and Wellington Management led the investment.

What is AI inference?

Inference is the stage where a trained AI model generates outputs in response to inputs. Every time you ask ChatGPT a question or an app runs image recognition, that's inference. It's where most ongoing AI compute costs accumulate.

Why is Blackbird investing in Baseten?

Baseten was co-founded by Australians, and Blackbird VC focuses on Australian founders building global companies. The firm called this its largest investment ever.

How fast is Baseten growing?

Baseten claims its revenue has grown 20x over the past year, driven by rising demand for AI inference infrastructure. The company has not disclosed absolute revenue figures.

Source: Tech-Economic Times / ET