Anthropic is compounding, OpenAI is flatlining, and the betting markets have noticed

Two of the biggest listings in market history are queued up for the back end of this year, and punters are already pricing the run-in. Polymarket has opened books on where OpenAI (Unlisted:OPAI) and Anthropic (Unlisted (US):ANTHRO) private valuations land at the end of August, settled on the price reported by Nasdaq Private Market.