The startup, now valued at about $500 million, directs artificial-intelligence prompts to various large language models based on cost, speed and other factors

Startup OpenRouter has raised $40 million in venture funding to help software developers overwhelmed by the growing number of artificial-intelligence models.

“There’s been a Cambrian explosion of models,” said Alex Atallah, OpenRouter’s chief executive and co-founder, who previously co-founded OpenSea, an online marketplace for nonfungible tokens. “Our business is a one-stop shop for all models,” he said.

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