drop the #1 open model into Claude Code in place of Opus · 2-minute swap · ~1/6 the cost

Get the Run-Any-Open-Model Setup Sheet

GLM 5.2 is the new #1 open-source model — MIT-licensed, beating GPT-5.5 on real coding benchmarks and near-tying Claude Opus 4.8 — and you can drop it straight into Claude Code in place of Opus for roughly one-sixth the cost. This field-tested 1-page sheet gives you the exact settings.json config (the two environment lines, copy-paste ready), how the GLM tiers map onto the Opus / Sonnet / Haiku slots and the /model picker, the real cost math, and the honest 3-part catch checklist: where Opus still wins the marathons, the China data risk on the API, and why self-hosting needs a data center. The same trick repoints Claude Code at any open model that drops next.

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