Ali Ansari, micro1 CEO, poses for a photo in San Francisco.micro1If you’re watching for indicators of AI market froth, the meteoric rise of micro1 is about as clear as it gets. At the start of the year, it was an AI-powered recruitment service clearing roughly $7 million annually. Now, eight months after a pivot into data annotation for AI training, it has crossed $100 million in annualized revenue and fielded investment offers at a $2.5 billion valuation (just several months ago, it closed a fu...