Private Markets, Angel and Secondary Investing, Sacra

Sacra

Private Markets, Angel and Secondary Investing

Bringing transparency to private markets so investors, founders, and employees can build on conviction. Sacra delivers deeply researched insights on the private companies shaping tomorrow's markets. By surfacing the data, context, and operator perspective that are missing from private markets today, we help secondary buyers and sellers price equity accurately and unlock liquidity for the people building these businesses.

Private Capital Markets

<ul><li>Sacra estimates that xAI hit roughly $3.8B in annualized revenue at the end of 2025, up from about $100M in 2024, reflecting the combined xAI + X business following the March 2025 merger.</li><li>On February 2, 2026, SpaceX acquired xAI in an all-stock deal.</li><li>xAI&#39;s cost structure is capital-intensive.</li></ul>

Sacra estimates that xAI hit roughly $3.8B in annualized revenue at the end of 2025, up from about $100M in 2024, reflecting the combined xAI + X business following the March 2025 merger.On February 2, 2026, SpaceX acquired xAI in an all-stock deal.xAI&#39;s cost structure is capital-intensive.

<ul><li>In November 2025, Sakana AI raised 20 billion yen (US$135 million) in its Series B, establishing a post‑money valuation of approximately 400 billion yen (US$2.635 billion).</li><li>This evolutionary approach produced EvoLLM-JP, a 7-billion parameter model that outperformed previous 70-billion parameter Japanese language models.</li><li>The business model leverages evolutionary computing to create specialized AI models at a fraction of traditional training costs.</li></ul>

In November 2025, Sakana AI raised 20 billion yen (US$135 million) in its Series B, establishing a post‑money valuation of approximately 400 billion yen (US$2.635 billion).This evolutionary approach produced EvoLLM-JP, a 7-billion parameter model that outperformed previous 70-billion parameter Japanese language models.The business model leverages evolutionary computing to create specialized AI models at a fraction of traditional training costs.

<ul><li>ComfyUI raised $30 million at a $500 million valuation in a round led by Craft Ventures in April 2026, bringing total capital raised to approximately $47.5 million.</li><li>Since launching as open source in early 2023, ComfyUI has grown to over 4 million users and more than 150,000 daily downloads.</li><li>The risk is that these simplified tools continue adding advanced features while maintaining their accessibility advantage, potentially commoditizing ComfyUI's power-user moat.</li></ul>

ComfyUI raised $30 million at a $500 million valuation in a round led by Craft Ventures in April 2026, bringing total capital raised to approximately $47.5 million.Since launching as open source in early 2023, ComfyUI has grown to over 4 million users and more than 150,000 daily downloads.The risk is that these simplified tools continue adding advanced features while maintaining their accessibility advantage, potentially commoditizing ComfyUI's power-user moat.

<ul><li>Sacra estimates that Photoroom is at $94M of annual recurring revenue (ARR) as of 2024, up 89% year-over-year.</li><li>PhotoRoom raised $43M at a $500M valuation in March 2024, led by Balderton Capital with participation from Aglaé and Y Combinator.</li><li>The company has demonstrated impressive capital efficiency, scaling to $20M in ARR on just $2M of invested capital, and achieving profitability.</li></ul>

Sacra estimates that Photoroom is at $94M of annual recurring revenue (ARR) as of 2024, up 89% year-over-year.PhotoRoom raised $43M at a $500M valuation in March 2024, led by Balderton Capital with participation from Aglaé and Y Combinator.The company has demonstrated impressive capital efficiency, scaling to $20M in ARR on just $2M of invested capital, and achieving profitability.

Cerebras Systems / Private Capital Markets

<ul><li>Since our last coverage, Cerebras postponed its IPO following regulatory questions about its UAE revenue concentration (G42 accounted for ~83% of 2023 revenue) and instead raised $1B from Fidelity and Tiger Global.</li><li>Cerebras&#39;s single-chip architecture loads entire AI models onto one chip with ~44GB of onboard memory, delivering inference ~10x faster than traditional multi-GPU setups—the company historically sold these as $2M hardware units to national labs, but launched a cloud inference API in summer 2024 that has since become the primary growth driver, serving customers like Perplexity, Notion, Windsurf, and Cognition on a pay-per-token basis.</li><li>Where selling $2M chips to national labs like Argonne and Livermore limited Cerebras to a small pool of state-backed research customers with long sales cycles and high revenue concentration, selling inference via API creates higher velocity and opens up the much larger market of AI startups and enterprises that want speed without buying and operating specialized hardware.</li></ul>

Since our last coverage, Cerebras postponed its IPO following regulatory questions about its UAE revenue concentration (G42 accounted for ~83% of 2023 revenue) and instead raised $1B from Fidelity and Tiger Global.Cerebras&#39;s single-chip architecture loads entire AI models onto one chip with ~44GB of onboard memory, delivering inference ~10x faster than traditional multi-GPU setups—the company historically sold these as $2M hardware units to national labs, but launched a cloud inference API in summer 2024 that has since become the primary growth driver, serving customers like Perplexity, Notion, Windsurf, and Cognition on a pay-per-token basis.Where selling $2M chips to national labs like Argonne and Livermore limited Cerebras to a small pool of state-backed research customers with long sales cycles and high revenue concentration, selling inference via API creates higher velocity and opens up the much larger market of AI startups and enterprises that want speed without buying and operating specialized hardware.

United States

Model hub and collaboration tools for developers building with open-source AI models

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TL;DR: After UAE regulatory scrutiny stalled its IPO, Cerebras raised $1B and is diversifying revenue by selling cloud inference alongside...

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