some information on Anthropic internal models:
This is a AI post classified by AGK Intelligence as Frontier models (a model release), kept by the AI Radar because it carries real work, not commentary.
HOLY FUCK FINALLY some information on Anthropic internal models: Model 4 finished training in October 2026 and scores 178.6 on the Anthropic ECI this is 4 AECI higher than Opus 5.5 or about 3 months of frontier progress
Posted by Lisan al Gaib (63.5k followers) 19 h ago · 921 likes · 65.2k views · view the original post on X. Kept by the AI Radar as Frontier models.
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