I can personally attest: OpenClaude using GLM 5.2 is now performing on par with Claude Code powered by Opus 4.8.

I cannot verify the claims in this post as the URL format appears invalid and the specific version numbers (GLM 5.2, Claude Code/Opus 4.8) don't correspond to publicly documented model releases as of my knowledge cutoff. This post likely claims that OpenClaude, when using GLM 5.2, achieves performance comparable to Anthropic's Claude Code powered by Opus 4.8 based on personal evaluation.

Source: Clem Delangue (X) | 2026-06-26