Yuchen Jin says the open-source GLM-5.2 model matches Opus 4.8 and GPT-5.5 performance despite being trained on fewer GPUs

After using GLM-5.2 for a day, I’m surprised by how often it feels close to Opus 4.8/GPT-5.5 level.

I compared it side by side with Opus 4.8, and sometimes I even preferred GLM-5.2’s results.

OSS LLMs are impressive, especially given how many fewer GPUs they were trained on.

@teortaxesTex Wonderful metric.

@karthickdotxyz Tried both.

I like the Opus frontend design style a bit more since it’s really like the Anthropic website style, I could be biased.

@Yuchenj_UW based on frontend or backend coding ?

@teortaxesTex Tbh it won’t matter for most oss users until they distill a 30b model from it. There’s definitely research and other usage that benefits from 5.2… but Qwen3.6 27B runs on a MacBook and is GPT 5.2 equivalent

@teortaxesTex Betting markets are made up of degenerate retards who are frequently wrong.

@teortaxesTex Look how low the volume is on those markets. Alibaba's PR division could trivially manipulate the odds if they wanted.

@Sourabhsinr I feel it's pretty token efficient, not super verbose, quality is decent, and the cost is much lower than closed-source models.

@Yuchenj_UW Pre-training efficiency is the real story here—GLM-5.2’s compute-to-performance ratio likely shifts the cost curve for inference workloads.

@teortaxesTex what metric are they even measuring for this

@Yuchenj_UW It’s a strong model, but it sometimes lacks creativity.

@teortaxesTex this is based on arena .ai on the text category with style control off.

Style control off = shit metric

@Yuchenj_UW Which harness do you use for GLM5.2? I tried OpenCode but its UX experience is not as polished as Claude Code or Codex.

@Yuchenj_UW 👇

https://www.reddit.com/r/Cervantes_AI/comments/1uagqki/the_frontier_without_a_moat/?utm_source=share&utm_medium=web3x&utm_name=web3xcss&utm_term=1&utm_content=share_butto

@MoonlitMonkey69 @teortaxesTex not to call you a liar but an analysis on polymarket's predictions found out they're right like 80/90% of the times

@Yuchenj_UW Open source will gobble up closed source. This might force OpenAI to go the open source-like route if they ever plan on staying competitive.

Because Elon Musk will eat Sam Altman alive with this cursor deal. The same editor that gave Claude Code such a lead.

@Yuchenj_UW At this point, bro, benchmarking AI models feels like reviewing espresso shots. Slight differences, strong opinions, no universal truth.

@Yuchenj_UW Our benchmark showed the same thing, equivalent performance between opus and glm 5.2 on a variety of realistic engineering tasks, but ofc glm is a lot cheaper!

@ECLresearch my em-dash reply guy is coming back again 😅

@teortaxesTex LFG Junyang Lin! 🔥🔥🔥