Cyber-ECI reveals frontier models lead general capabilities by ~1 year

scaling01 · x · 2026-08-27

Analysis of the Cyber-ECI metric suggests that the latest internal models from Anthropic and OpenAI score 175-180 on cyber capabilities, putting them about 15 points (nearly 1 year) ahead of their general ECI. Models like Mythos 5 and GPT-5.6-Sol show significantly higher cyber capability ratings compared to their general metrics. This indicates that progress in math and CS outpaces other domains, and single-agent benchmarks like ECI fail to capture the highly non-convex nature of model capability envelopes.

Related event: Frontier Models' Cyber Capabilities Lead General Ability by About a Year(2 posts)→

Original post →

More from Safety

Safety channel →