New AI Infra Decacorns: Fireworks and Baseten Reach $10B+ Valuations (OpenRouter Next)
Latent Space reports on major funding milestones for AI inference infrastructure companies Fireworks AI and Baseten, both reaching decacorn ($10B+) valuations. OpenRouter is noted as a likely next entrant to that tier. The piece signals continued investor conviction in the AI serving and inference layer as a high-value segment of the stack.
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New AI Infrastructure Unicorns: Exa, Modal, TurboPuffer Fundraising Roundup
Latent Space's AINews highlights a quiet news day by featuring recent fundraising rounds for three AI infrastructure companies: Exa (AI-native search/retrieval), Modal (serverless GPU compute), and TurboPuffer (vector database). All three have reached or are approaching unicorn valuations, signaling continued investor appetite for AI infrastructure tooling. The piece is a brief commentary aggregating these business milestones rather than a deep technical analysis.
Anthropic Passes OpenAI in Business Adoption; Cerebras IPO; Claude Mythos Security Concerns
A Ramp AI Index survey shows Anthropic reached 34.4% business adoption in April 2026, surpassing OpenAI's 32.3%, though analysts cite token cost inflation, service degradation, and competition from cheaper inference platforms as threats to the lead. Cerebras surged 89% on its IPO debut, signaling investor appetite for AI infrastructure hardware. Separately, Anthropic's withheld Claude Mythos model—which solved a novel cybersecurity challenge—prompted meetings with the Financial Stability Board, while ArXiv announced year-long bans for authors submitting unvetted AI-generated content.
Accelerating the next phase of AI
OpenAI has raised $122 billion in new funding, marking one of the largest capital raises in AI history. The funds are earmarked for expanding frontier AI development globally, investing in next-generation compute infrastructure, and scaling to meet growing demand for ChatGPT, Codex, and enterprise AI products. The announcement signals continued aggressive investment in AI infrastructure and model development at the frontier.
OpenAI Announces $110B Investment Round at $730B Valuation
OpenAI has announced a $110 billion investment round at a $730 billion pre-money valuation. The round includes $30B from SoftBank, $30B from NVIDIA, and $50B from Amazon. This represents one of the largest private funding rounds in history and significantly increases OpenAI's capitalization for scaling AI infrastructure and development.
Anthropic raises $65B in Series H funding at $965B post-money valuation
Anthropic has closed a $65 billion Series H round led by Altimeter Capital, Dragoneer, Greenoaks, and Sequoia Capital, valuing the company at $965 billion post-money. The company reports annualized run-rate revenue crossing $47 billion and highlights major compute expansion agreements with Amazon (up to 5 GW), Google/Broadcom (5 GW of TPU capacity), and SpaceX (Colossus GPU access). Strategic infrastructure partners Micron, Samsung, and SK hynix join the round alongside a broad syndicate of institutional investors. Funding is earmarked for safety and interpretability research, compute scaling, and product expansion including Claude Code and Cowork.
Can the stockmarket swallow Anthropic, SpaceX and OpenAI?
The Economist examines whether public markets can absorb the potential IPOs of Anthropic, SpaceX, and OpenAI, three of the largest private companies in their respective sectors. The piece addresses valuation, liquidity, and structural questions around bringing frontier AI labs to public markets. With 368 HN points and 641 comments, the article has generated substantial community discussion. The framing reflects growing investor and analyst attention to the eventual public-market transition of major AI labs.
OpenAI Raises $40B at $300B Valuation
OpenAI announced a $40 billion funding round at a $300 billion post-money valuation, making it one of the largest private funding rounds in history. The capital is intended to accelerate AI research toward AGI, scale compute infrastructure, and expand product capabilities. OpenAI reports 500 million weekly active ChatGPT users at the time of the announcement.
Anthropic Surpasses OpenAI to Become Most Valuable AI Startup
Anthropic has reportedly surpassed OpenAI in valuation to become the world's most valuable AI startup as of late May 2026. This represents a significant shift in the competitive landscape between the two leading frontier AI labs. The story generated substantial Hacker News engagement with 383 points and 434 comments, indicating broad industry interest.