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On 2026-06-18 Jeremy Howard (@jeremyphoward) praised Zai_org's GLM 5.2 as “a…

2026-06-18 · 23:52 UTC ·@jeremyphoward ·0 min read

Brief

Jeremy Howard (@jeremyphoward) praised Zai_org’s GLM 5.2 on 2026-06-18, calling it a marvel comparable to Opus 4.8 and GPT 5.5. He highlighted its speed, low cost, concise outputs, nuanced judgment, and strong long-context handling, noting he’s never before seen an open-weights model perform at this level.

Why it matters

On 2026-06-18 Jeremy Howard (@jeremyphoward) praised Zai_org's GLM 5.2 as “a marvel,” stating it is at least as good as Opus 4.8 and GPT 5.5.

Key details

  • Howard reported GLM 5.2 is “super fast, inexpensive, and not too verbose,” and that it “responds with nuance and judgement” while handling long context very well.
  • He emphasized this is the first time he’s experienced an open-weights model with this level of performance.
Source evidence

Wow.

@Zai_org GLM 5.2 is a marvel! It is at least as good as Opus 4.8 and GPT 5.5. It's super fast, inexpensive, and not too verbose.

It responds with nuance and judgement, & handles long context VERY well.

I've never experienced an open weights model like this before.