Thinking Machines Lab Eyes $40B Valuation, Fal Doubles to $16B: AI Pricing Heats Up
AI Founder Pedigree Commands Astronomical Premiums
The most striking valuation signal of the week came from Thinking Machines Lab, the AI startup founded by former OpenAI CTO Mira Murati. According to reporting by Business Insider on November 6, 2026, the company is nearing the close of a $5 billion funding round led by Accel at a $40 billion pre-money valuation — a figure that would imply a post-money valuation of roughly $45 billion. As noted by SiliconANGLE, the deal was reported the same week Thinking Machines debuted a new model, Inkling 2 Small. The round would more than triple the company's valuation from its July 2025 seed round, which valued it at $12 billion after a $2 billion raise led by Andreessen Horowitz. Notably, the company had earlier sought a valuation above $50 billion before those talks collapsed, making the current $40 billion figure a market-corrected reset — still extraordinary for a startup barely 18 months old.
AI Inference Is the Hottest Subsector Right Now
Thinking Machines isn't the only company repricing dramatically upward. Bloomberg and TechCrunch both reported this week that Fal, a San Francisco-based AI inference startup hosting image, video, and audio models, raised a $1.3 billion Series F led by Bessemer Venture Partners, with Nvidia, Sound Ventures, and T. Rowe Price also participating. The round values Fal at $16 billion — exactly double the $8 billion valuation it carried from a Sequoia-led round in April 2026, just seven months earlier. TechCrunch noted that combined across its Series E and F, Fal raised $1.65 billion in total. The speed of Fal's valuation compression is a vivid illustration of how inference infrastructure — the layer that actually runs trained AI models for end users — has become the market's most coveted segment.
The Broader Valuation Landscape: A Two-Tier Market
These headline deals reflect a broader structural shift in how AI startups are being priced in late 2026. Data tracked by Bot Memo shows that the median Series B valuation for AI startups rose from $500 million across the first nine months of 2025 to $1.0 billion over the same period in 2026, on more than twice as many reported rounds. AI-adjacent infrastructure companies saw median valuations jump 50% year-over-year. Meanwhile, revenue multiple benchmarks have stratified sharply: analysis from Value Add VC and Finro data places foundation model companies at roughly 25–40x revenue, AI-native SaaS at 15–30x, and commodity AI application wrappers at a far more modest 3–8x.
What This Week's Deals Signal
The Thinking Machines and Fal rounds together underscore a clear investor thesis heading into late 2026: capital is concentrating around AI infrastructure and credentialed founders with direct lineage to frontier model development. As one aggregator of funding data put it, the November 2026 market is one where "capital is abundant at the top and scarce at the bottom." With mega-rounds absorbing the bulk of available venture dollars, earlier-stage AI startups without proprietary data advantages or demonstrable revenue traction face a markedly tougher environment than the headline numbers suggest.