<p id="speakable-summary" class="wp-block-paragraph">AI inference company Baseten is close to finalizing a stunning $1.5 billion funding round at a $13 billion valuation, <a rel="nofollow" href="https://www.wsj.com/tech/ai/the-13-billion-ai-startup-betting-on-cheaper-alternatives-to-openai-anthropic-b9679603?mod=tech_lead_pos1">the WSJ reports.</a> Just five months ago, the startup announced that it had raised a <a rel="nofollow" href="https://www.baseten.co/blog/announcing-baseten-s-300m-series-e/">$300 million Series E </a>at a $5 billion valuation. And that round was just nine months after raising a <a rel="nofollow" href="https://www.baseten.co/blog/announcing-baseten-150m-series-d/">$150 million Series D.</a>
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<p class="wp-block-paragraph">If finalized, this latest round would represent a 160% increase in valuation in less than half a year. However, the WSJ reports that this is a <a href="https://techcrunch.com/2026/03/03/why-ai-startups-are-selling-the-same-equity-at-two-different-prices/">split-priced round</a>, a tactic startups are using to boost their headline valuation and make lead investors look good on paper. Some investors in this latest funding round are reportedly coming in at a $13 billion valuation, while others at $11 billion, sources told the Journal. This deal is said to be co-led by Spark Capital, Sands Capital, Altimeter Capital, and Wellington Management. </p>
<p class="wp-block-paragraph">Launched in 2019, Baseten is a startup benefiting from what The Next Wave hailed the <a rel="nofollow" href="https://thenextweb.com/news/baseten-1-5bn-round-13bn-valuation-ai-inference">“inference gold rush,” </a>in which VCs are pouring enormous amounts of money into companies building the inference layer. Inference is what the model does after a user submits a prompt. Baseten promises to handle inference quickly while controlling costs by routing requests to the best-for-task model, especially to competent, less-expensive open source alternatives.</p>
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