One error: GLM 5.2 beats the best public Gemini model, 3.5 pro.

There's 2 caveats with the rest. First, GLM 5.2 matches those models in "xhigh" effort modes, which has a very low quota on the subscriptions, especially for Claude.

Second, last-gen GPT/Claude means what they release in April/May of 2026. Or to be even more complete/fair:

GLM 5.2 beats what OpenAI released in March 2026 (GPT 5.5 xxhigh), and what Anthropic released in April 2026 (Opus 4.7 xhigh). It is beaten by what OpenAI released in April of 2026 (GPT 5.6 Sol xxhigh) and Anthropic released in May 2026 (Opus 4.8 (the same as "Fable" ?), xhigh effort)

GLM 5.2 was released on Jun 16 and if OpenAI and Anthropic hadn't done those quick releases they would have been beaten on their best available models ...

So great news! Open source now has SOTA performance 3 months after OpenAI/Anthropic/Google. Wow.