As closed-source models have gotten more expensive, businesses have found workarounds by customizing open-source AI for their specific needs. Some are also trying to improve the software they use that allows models to use tools and take actions, otherwise known as a harness. Now, startups that help businesses with both tasks are seeing more investor interest. One such startup, San Francisco-based Trajectory, recently raised $40 million in new funding at a $300 million valuation, including the investment, just two months after announcing its last round at a $115 million post-investment valuation, according to a person with knowledge of the funding. Sequoia Capital led the round, which also saw participation from Nvidia and Bessemer Venture Partners, the person said.
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