How scaling post-training is offering gains in AI intelligence
Investing.com -- The AI race is entering a new phase, with a sharp pivot from the brute-force scaling of training data to the strategic amplification of models after training. Recent disclosures around xAI’s Grok 4 model show a structural shift in how intelligence gains are being unlocked, not by growing model size or feeding in more data, but by investing heavily in post-training compute.