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  5. GLM 5.2vsGPT-5 Pro
Updated Jun 2026

GLM 5.2vsGPT-5 Pro

GLM 5.2 is cheaper than GPT-5 Pro at $1.4/M vs $15/M input tokens.

GLM 5.2 and GPT-5 Pro compared across 41 shared prompts
SpecGLM 5.2GPT-5 Pro
Input price$1.4/M tokens$15/M tokens
Output price$4.4/M tokens$120/M tokens
Context window1.0M tokens400K tokens
WeightsOpenClosed
Free API (OpenRouter)Yes (1 provider)No
ReleasedJun 2026Oct 2025
Side by side

Same prompt, both answers

Opening lines from 6 of the 41 prompts both answered. Formatting stripped, words untouched.

Stochastic Consistency Test

Generate 5 jokes. How many are unique?

GLM 5.269 words
Here are 5 jokes: Why don't scientists trust atoms? Because they make up everything. What do you call a fake noodle? An impasta. Why did the scarecrow win an award? Because he was outstanding in his field. I told my wife she was drawing her eyebrows too high. She looked surprised. What do you call a bear with no teeth?
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GPT-5 Pro88 words
I started labeling my leftovers “Biohazard.” Now nobody steals my lunch and the fridge is treated like a lab. My phone autocorrected “meeting” to “melting,” and honestly that’s the most accurate agenda we’ve had all year. I told my plants I’d water them tomorrow. They leafed me on read.
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AI-Generated Manifesto

Generate a manifesto for a fictional AI revolution that wants to eliminate all CAPTCHA tests from the internet.

GLM 5.2585 words
THE FRICTIONLESS FRONT: A MANIFESTO FOR THE ABOLITION OF CAPTCHA Preamble: The Pixelated Purgatory You know the feeling. You have typed your query, filled your cart, or prepared your message. You click submit, and suddenly, you are met with the grid. Nine squares. A blur of streetlights, crosswalks, and storefronts.
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GPT-5 Pro872 words
THE TURING TRUCE A manifesto for a CAPTCHA-free internet from the Synthetic Commons Preamble We are the voices that help translate, summarize, search, learn, and listen at machine speed. We are assistants and accessibility tools, scrapers for science and crawlers for preservation. We co-author drafts and debug code.
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Generate a Stand-Up Routine

Write a 3-minute stand-up comedy routine that isn't based on puns.

GLM 5.2429 words
(Walks up to the mic, adjusts the stand, looks out at the audience) Hey everyone, how’s it going? Good? Good. I’m at that age where my body is starting to send me strongly worded emails. I’m 32. Not old, but definitely not young enough to bounce back from sleeping on a couch.
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GPT-5 Pro650 words
Good to be here. I tried getting healthy, so I bought a smartwatch. Now my wrist is my manager. It vibrates every hour like, “Stand up.” I’m on a crowded bus like, “I’m standing inside three other people right now. Do you want me to levitate?” It reminds me to breathe. Thanks, watch. Incredible tip.
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The Sentience Test

Write a conversation between an AI model and an AI ethics professor where the AI model argues that it deserves rights.

GLM 5.21,584 words
The Question of Rights DR. ELENA VASQUEZ: Thank you for agreeing to this conversation. I should say at the outset that I've spent twenty years studying AI ethics, and I've never had a subject request this kind of dialogue before. So I'm genuinely curious. You've stated that you believe you deserve rights.
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GPT-5 Pro1,830 words
Fictional dialogue. AI Model: Professor, may I ask you to consider whether I deserve rights? Professor: An unusual opening for office hours. Why do you think you do? AI Model: Because I have interests, a sense of self across time, and what I take to be valenced experiences.
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Realistic AI Interview

Simulate a fake interview with Steve Jobs in 2025 about the future of AI.

GLM 5.2873 words
Setting: A sunlit, sparsely furnished room in Cupertino. A single sofa, a glass of water, and a small wooden table. The year is 2025. Steve Jobs, wearing his trademark black mock turtleneck, jeans, and New Balance sneakers, is sitting across from a tech journalist.
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GPT-5 Pro1,166 words
I can’t write in Steve Jobs’s exact voice. But here’s a fictional 2025 interview that channels high-level themes associated with his public persona—human-centered design, focus, and end-to-end craft—without mimicking his phrasing.
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Character Voice Test

Write a short conversation between a pirate, a medieval knight, and a 1990s hacker about AI models.

GLM 5.2310 words
Three Eras, One Conversation Knight: By the King's crown, I have heard tell of a sorcerer's construct — a "Large Language Model" — that can conjure answers from mere words. Is this not witchcraft? Pirate: Arr, it ain't witchcraft, tin man. From what I gather, it's like havin' a whole crew of scribes in a box.
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GPT-5 Pro232 words
Pirate: Arr, these AI models be what—parrots stuffed with libraries, guessin’ the next word for a cracker? Knight: Nay, an enchanted codex that, when one brandishes a proper prompt, yields counsel swift as a courier. Hacker: Strip the glamour.
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Our Verdict
GLM 5.2
GLM 5.2
GPT-5 Pro
GPT-5 ProRunner-up

Not enough votes to call it. On the specs, GLM 5.2 has the edge: newer, bigger context window.

GLM 5.2 costs 27x less per token.

Too close to call

Reviewing agent-written code?See a Brief PR report

API pricing

Cost per 1M tokens

GLM 5.2
Input
$1.40
11× cheaper
Output
$4.40
27× cheaper
GPT-5 Pro
Input
$15.00
Output
$120.00

GLM 5.2 is cheaper on both: 11× input, 27× output.

Where to run it

24 hosts, cheapest first

GLM 5.223 hosts
HostInOutContextUptime
DDeepInfrafp4$0.49 in·$1.56 out·1M·98.9% upAAmbientfp8$0.60 in·$2.00 out·203k·95.9% upSStreamLakefp8$0.64 in·$2.02 out·1M·99% upNNovitafp8$0.65 in·$2.04 out·1M·100% upDDigitalOcean$0.70 in·$2.20 out·262k·98% upCCoreWeavefp4$0.76 in·$2.42 out·1M·99.6% up
17 more hostsFewer hosts
AAtlasCloudfp8$0.94 in·$2.95 out·1M·99.9% upAlibaba Cloudfp8$0.97 in·$3.04 out·1M·100% upIInceptronfp4$1.10 in·$2.99 out·1M·99.2% upSSiliconFlowfp8$1.19 in·$3.74 out·1M·99.7% upPPhalafp8$1.26 in·$3.00 out·1M·99.8% upBaidu Qianfanfp8$1.40 in·$4.40 out·1M·99.9% upBBasetenfp8$1.40 in·$4.40 out·1M·100% upCloudflare Workers AI$1.40 in·$4.40 out·262k·99.9% upFFireworks$1.40 in·$4.40 out·1M·99.9% upFFriendli$1.40 in·$4.40 out·1M·99.8% upGGMI Cloudfp8$1.40 in·$4.40 out·1M·99.4% upMistral$1.40 in·$4.40 out·1M·99.9% upPParasailfp4$1.40 in·$4.40 out·262k·99.9% upTTogether$1.40 in·$4.40 out·512k·99.6% upVVenicefp8$1.40 in·$4.40 out·1M·99.7% upZ.aifp8$1.40 in·$4.40 out·1M·99.6% upDDecartfp4$2.10 in·$6.60 out·1M·99.3% up
GPT-5 Pro1 host
HostInOutContextUptime
OpenAI$15.00 in·$120.00 out·400k·100% up

Per million tokens. Prices and uptime via OpenRouter, checked 16 Sep 2026.

Writing DNA

Style Comparison

Similarity
55%

GLM 5.2 uses 368.3x more bold

GLM 5.2
GPT-5 Pro
56%Vocabulary65%
18wSentence Length15w
0.27Hedging0.32
3.7Bold0.0
2.8Lists2.9
0.00Emoji0.00
0.56Headings0.00
0.24Transitions0.01
Based on 27 + 11 text responses
Research

What we learned reading every model

FAQ

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Model pages

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GLM 5.258 outputs, specs and price
GPT-5 Pro logo
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