GLM
An open-source AI language model from Z.ai (Zhipu AI), described as the best open-source model in the world at time of release, noted for strong front-end design capabilities at lower cost than frontier models.
What else do they all swear by?
Riley Brown, Claire Vo, Jason Calacanis and 6 others use or recommend GLM. See what else they have in common.
See what they all swear by Or pick your own peopleWhat creators think
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How GLM compares
14 creators weighed in
Claude
Direct rival
Anthropic's AI assistant
GLM is open-source and much cheaper. Riley says it nearly matches Claude Opus at a fraction of the cost, and Naval picks GLM when Claude refuses to answer.
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GLM is open-source and much cheaper. Riley says it nearly matches Claude Opus at a fraction of the cost, and Naval picks GLM when Claude refuses to answer.
"GLM dropped — we added it to Vercel AI gateway. It's an incredibly good model, GLM 5.2. Within days, we had a fast variant that was four times faster. GLM 5.2 fast is astonishingly fast and it's only getting faster. If I have an agent th..."
Compared favorably to Claude Opus for cybersecurity tasks; recommended alongside Grok for price-performance; Kimi raises the bar further
"I went to OpenRouter, I got my own keys, I've been playing with GLM. I found that GLM 5.2 performs extremely well and our tasks are literally getting cut in half using the same model but with a different harness."
Used as alternative to Claude and OpenAI frontier models; dynamic routing falls back to Claude when needed
"You can always just switch to GLM 5.2 and it'll just do it. Have the time of your life. Go ask it any question about race, gender, immigration, mental health, doctor advice, legal advice."
Recommended as alternative to frontier models (Claude, ChatGPT) when they refuse to answer; also compared to Grok which Naval says is 'a little neutered'
"This model after spending a ton of time actually using it, I do believe that it passes the vibe check. I think that it's getting close to the frontier labs, specifically Opus 4.8 and GPT 5.5. I also connected GLM 5.2 to my Notion, to my ..."
Compared to Claude Opus 4.8 and GPT 5.5 (frontier models it rivals at a fraction of the cost); positioned as the best open-source model available
"GLM 5.2 is the best open-source model in the entire world. And I guarantee you, you are going to be surprised at how powerful it is. Over the last 48 hours, I've just been testing GLM a ton. I highly recommend you start looking into that."
Slightly worse than Claude Opus 4.8 but significantly cheaper; positioned as the best open-source alternative to expensive frontier models like Claude Fable/Opus
Kimi
Direct rival
Moonshot AI's language model
Anish says GLM does exactly what you ask and nothing more, while Kimi is more open and creative. Scott notes GLM made a big wave but less public buzz than Kimi.
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Anish says GLM does exactly what you ask and nothing more, while Kimi is more open and creative. Scott notes GLM made a big wave but less public buzz than Kimi.
"You can get to the Pareto frontier with these, you know, Kimi K3 or pick your favorite, like GLM, open source model."
Kimi K3
"GLM5.2 and GLM5.3 are great examples of this — they're very literal and they'll only do exactly what you told them to do and nothing more."
Contrasted with Kimi K3 which is more open, presumptuous, and creative
"Other Chinese models like GLM — GLM caused a very big wave. It may not have done the rounds in the same way that Kimi did, but it was certainly a great model."
Compared to Kimi K3 as another Chinese open-source model making an impact
Anthropic
Direct rival
AI safety company behind Claude
GLM costs far less and still matches results, say Aileen's portfolio companies. Anthropic and OpenAI models refused to help when GLM stepped in.
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GLM costs far less and still matches results, say Aileen's portfolio companies. Anthropic and OpenAI models refused to help when GLM stepped in.
"A friend of ours has got a customer who just moved nine figures off of the Frontier Labs to put it on GLM5.2. So that's the ZhipuAI one. That's really good."
Compared to Anthropic and OpenAI frontier models as a cheaper alternative
"Hugging Face had to fall back on a self-hosted Chinese open-weight model, specifically GLM 5.2, just to investigate their own breach."
Used as a substitute for Anthropic and OpenAI models, which refused to assist
"A lot of our portfolios have been playing with it and they're saying that they're getting equivalent results for a fraction of the cost. And I think that's why they are all getting ready, if they're not already, to be model agnostic."
Compared favorably to Anthropic and OpenAI frontier models on cost
ChatGPT
Direct rival
OpenAI's AI chatbot
GLM 5.2 is said to rival ChatGPT 5.5; GLM is easier to fine-tune than closed-source models like ChatGPT.
2 creators
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GLM 5.2 is said to rival ChatGPT 5.5; GLM is easier to fine-tune than closed-source models like ChatGPT.
"Within open weights, you might want to start with the new GLM model which has fewer parameters but it's still a very long context window which gives you more flexibility. It's less locked into its training than the closed source models. ..."
Preferred over closed-source models for fine-tuning; mentioned alongside GPT-2/GPT-3 as historical fine-tuning reference
"Z.ai just launched ZCode, a coding agent for its GLM 5.2 model said to rival ChatGPT 5.5 and Claude. This GLM 5.2 has climbed to the top of the western usage charts on third-party development platforms such as OpenRouter."
Said to rival ChatGPT 5.5 and Claude; reportedly bested Claude Fable on design arena leaderboard
AI model hosting platform
Hugging Face had to switch to GLM when closed-source models refused to help with defense work due to guardrails.
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Hugging Face had to switch to GLM when closed-source models refused to help with defense work due to guardrails.
"Hugging Face had to turn to — I think it was GLM 5.2, which is a Chinese model. So here we have Western companies about to be acquired by Nvidia being forced to turn to Chinese models for cyber defense because the guardrails have prevent..."
Used as alternative when GPT model refused to cooperate with Hugging Face due to guardrails
"Hugging Face had to turn to open models, specifically GLM 5.2, which is deeply ironic — a Chinese open-weight model that they run on their own infrastructure."
Used by Hugging Face as an alternative when closed-source frontier models refused to assist with defense
Which version
Each new one replaces the last.
7 creators didn't say which. Their quotes are labeled with when they said it, so you can tell which was out at the time.
What creators say
"GLM 5.3 just came out, which I used for a bunch of product work. It doesn't have a vision component, and it's sort of like this neurotic PhD you put in the corner. And they both have their role."
More from Anish Acharya →+1 more mention from Anish
"GLM5.2 and GLM5.3 are great examples of this — they're very literal and they'll only do exactly what you told them to do and nothing more."
"Somebody gave me an API key to a Bittensor subnet that had put GLM-5.1 from Z.AI. And I was like, okay, I'm not being metered. Instead of doing this daily cron job to do research on something, I was like, give it to me every hour."
More from This Week in Startups →+2 more mentions from This
"If somebody got on the network and said, 'Yeah, I'm providing GLM52, this open source model from China,' but they were actually using some old Deep..."
"Then they used GLM 5.2, which comes from China, to figure out what happened. And now everyone's very mad at one another."
"Flash is a perfectly decent model but it's not as good as the Chinese models, especially the new GLM Flash that's just come out — it's 10 times cheaper for the same performance. Fable scores 60 on the artificial analysis benchmark. The new GLM Fla..."
More from Emad Mostaque →"This model after spending a ton of time actually using it, I do believe that it passes the vibe check. I think that it's getting close to the frontier labs, specifically Opus 4.8 and GPT 5.5. I also connected GLM 5.2 to my Notion, to my Slack, and..."
More from Riley Brown →+2 more mentions from Riley
"The open models don't care either, like GLM 5.2 will do it any time."
"GLM 5.2 is the best open-source model in the entire world. And I guarantee you, you are going to be surprised at how powerful it is. Over the last ..."
"I start with Grok, GLM-5.2, and I also put it into Claude and the results are as good or better. I can't even tell the difference between these."
More from Jason Calacanis →+3 more mentions from Jason
"A friend of ours has got a customer who just moved nine figures off of the Frontier Labs to put it on GLM5.2. So that's the ZhipuAI one. That's rea..."
"I went to OpenRouter, I got my own keys, I've been playing with GLM. I found that GLM 5.2 performs extremely well and our tasks are literally getti..."
"You can always just switch to GLM 5.2 and it'll just do it. Have the time of your life. Go ask it any question about race, gender, immigration, mental health, doctor advice, legal advice."
More from Naval Ravikant →"It's good. I would use it for front-end work. I would use it for long-running back-end tasks. I spent $3.36 on about 6 million tokens. If you compare this to the cost of an Opus or a GPT 5.5, this is a steal. I think I'm going to keep it running i..."
More from Claire Vo →"Within open weights, you might want to start with the new GLM model which has fewer parameters but it's still a very long context window which gives you more flexibility. It's less locked into its training than the closed source models. And so if ..."
More from Dave Blundin →"GLM dropped — we added it to Vercel AI gateway. It's an incredibly good model, GLM 5.2. Within days, we had a fast variant that was four times faster. GLM 5.2 fast is astonishingly fast and it's only getting faster. If I have an agent that needs t..."
More from Guillermo Rauch →"I've already downloaded Kimi K3 and GLM 5.2 already in my garage, so sorry."
More from Y Combinator →"It's in the realm of GLM 5.2, which a couple months ago was a frontier Chinese model."
More from Misha Laskin →"You can get to the Pareto frontier with these, you know, Kimi K3 or pick your favorite, like GLM, open source model."
More from a16z →"They're not going to absolutely rinse you on using the frontier ones, and you can say, 'Look, I want to save 90% of my cost and use GLM or something.'"
More from Liam Ottley →"You can use GLM, Kimi, Qwen. All these different things are toolkits and you should benchmark every single workflow against every single model."
More from Vas →"The upcoming security problem is not going to be from OpenAI and Anthropic. It is going to be from open-weight models. The real challenge we're going to be facing is GLM 53, Kimi K3 — those things are within percentage points of the best American ..."
More from Alex Stamos →"There's also GLM, or people know it as Z.AI. It's another one you'll see pop up a lot. Some of these models can be weirdly good for specific jobs, so I wouldn't ignore them just because they're not the obvious brand name."
More from Greg Isenberg →"Hugging Face used GLM 5.2 to solve its cybersecurity hack."
More from Alice Han →"Hugging Face had to turn to — I think it was GLM 5.2, which is a Chinese model. So here we have Western companies about to be acquired by Nvidia being forced to turn to Chinese models for cyber defense because the guardrails have prevented them fr..."
More from David Sacks →"We saw the announcement and the release of the GLM 5.3 model and its capabilities from a cybersecurity standpoint — extremely impressive. It creates a big opportunity for whether it's startups or existing businesses in the security and governance ..."
More from Jeffrey Morgan →"GLM 5.2 was a really big, big step for open weight models. Kimi was kind of like Moonshot getting up to that step."
More from Alex Atallah →"Hugging Face had to fall back on a self-hosted Chinese open-weight model, specifically GLM 5.2, just to investigate their own breach."
More from Peter Diamandis →+1 more mention from Peter
"GLM 5.2 just became the number one open-weight model in the world. In some cases it matches or exceeds the top models from OpenAI and from Anthropi..."
"Other Chinese models like GLM — GLM caused a very big wave. It may not have done the rounds in the same way that Kimi did, but it was certainly a great model."
More from The Prof G Pod – Scott Galloway →+1 more mention from The
"Z.ai just launched ZCode, a coding agent for its GLM 5.2 model said to rival ChatGPT 5.5 and Claude. This GLM 5.2 has climbed to the top of the wes..."
"If you think about the latency of Claude Code versus GLM 5.2, it's roughly the same. You can compare the price of GLM 5.2 on Baseten or whatever Fireworks to the price you pay for an equivalent frontier model with same latency. The difference is a..."
More from Stanislas Polu →"Hugging Face had to turn to open models, specifically GLM 5.2, which is deeply ironic — a Chinese open-weight model that they run on their own infrastructure."
More from John Coogan →+1 more mention from John
"Most recently with GLM 5.2, it feels like open source is catching up again. Has there been as much of a roller coaster ride inside the company?"
"If that's true, then why don't I just take GLM, control it entirely, soup to nuts, on my own hardware inside of the United States with only US citizens that can touch it. It just seems like the brain-dead obvious thing to do, and it's much, much c..."
More from Chamath Palihapitiya →"A lot of our portfolios have been playing with it and they're saying that they're getting equivalent results for a fraction of the cost. And I think that's why they are all getting ready, if they're not already, to be model agnostic."
More from Aileen Lee →"The big story is centering around GLM 5.2 from Z.AI. It was officially released June 13th. There's been some strong performance on benchmarks, some positive reviews from developers."
More from Jordi Hays →+1 more mention from Jordi
"There's the new GLM 5.2 that people are loving. A lot of people saying like, 'Hey, I could use this as a daily.'"
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