GPT-5.4 Pro Takes New SOTA on Epoch's Frontier Index at 158

OpenAI's latest model variant nudged ahead on Epoch AI's composite benchmark, but the margins between frontier models continue to compress.

GPT-5.4 Pro claimed the top position on Epoch AI Research's composite frontier index with a score of 158, as @EpochAIResearch reported. The index aggregates performance across multiple benchmarks including APEX-Agents, ARC-AGI-2, and HLE — an evaluation suite increasingly focused on agentic capabilities rather than pure language tasks.

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum. Vestibulum ante ipsum primis in faucibus orci luctus et ultrices posuere cubilia curae.

Unlock the full briefing

Get every story in today's briefing, the full archive, and the daily AI intelligence brief.

All stories today

Full archive

Daily brief