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[ARTICLE · art-40079] src=theblindtest.io ↗ pub= topic=large-language-models verified=true sentiment=· neutral

Can you spot the expensive AI?

A blind test comparing GLM 5.2, a free open model, against Claude Opus 4.8, a costly closed model, found that most people cannot distinguish between the two. GLM 5.2 produced the same landing pages at 4.6 times lower cost, challenging the value of expensive AI.

read1 min views1 publishedJun 25, 2026
Can you spot the expensive AI?
Image: source

GLM 5.2psst - it's freeYou can chat withvsClaude Opus 4.8 GLM 5.2 right now, free, in Together Chat.Open Together Chat# Can you spot the expensive AI?

Two landing pages, same prompt. One came from a cheap, open model, the other a pricey, closed one that cost about 4.6× more. Most people can't tell.

What it cost to build all 11 pages

Claude Opus 4.8$3.01

Same prompts, same pages. GLM 5.2 came out 4.6× cheaper overall.

source & further reading
theblindtest.io — original article
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