Chinese LLMs 4-5 Months Behind US; ECI 155 May Be Reliability Threshold

Jsevillamol · x · 2026-08-25

According to ECI, Chinese frontier models are still 4-5 months behind US models. The perception of catching up stems from satisfaction of coding needs. Opus 4.6 was a major jump, and Kimi K3 (ECI 157) just surpassed it (ECI 155). The author speculates that ECI 155 might be the threshold for AI to be perceived as useful and reliable.

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