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OpenAI 8 years ago 11
An AI agent learned to play Montezuma's Revenge from a single human demonstration, achieving a score of 74,500. The agent was trained by replaying games from states extracted from that single demonstration and optimizing performance using PPO reinforcement learning. This outperforms previous methods that required multiple demonstrations or other learning approaches to master the same game.
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TLDRocket
28 October 2026
Google DeepMind’s Genie 4 claim to fame is making AI-generated worlds you can actually inhabit—then listen to. The new world model builds real-time, explorable 3-D environments from natural-language prompts, with synchronized audio (crashing waves and the like) and coherence that holds for up to two minutes—double Genie 3’s stretch—before the usual paper-thin stability rules start to show. Google is careful about where this lands first: Genie 4 is limited to trusted testers, then rolls out to Google AI Ultra subscribers and select partners, alongside a warning that details can drift and objects can vanish after edits.
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