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  5. GLM 4.5vsGLM 4.7 Flash
Updated Jan 2026

GLM 4.5vsGLM 4.7 Flash

GLM 4.7 Flash is cheaper than GLM 4.5 at $0.07/M vs $0.6/M input tokens.

GLM 4.5 and GLM 4.7 Flash compared across 54 shared prompts
SpecGLM 4.5GLM 4.7 Flash
Input price$0.6/M tokens$0.07/M tokens
Output price$2.2/M tokens$0.4/M tokens
Context window128K tokens200K tokens
WeightsOpenOpen
Free API (OpenRouter)NoNo
ReleasedJul 2025Jan 2026
SWE-bench Verified64.2%59.2%
Side by side

Same prompt, both answers

Opening lines from 6 of the 54 prompts both answered. Formatting stripped, words untouched.

Generate a Stand-Up Routine

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

GLM 4.5643 words
Alright, here’s a 3-minute stand-up routine focused on observational humor and relatable frustrations, zero puns allowed: (Starts pacing slightly, mock-serious expression) You know what’s weird? We’ve all become masters of pretending to be busy. Seriously. Walking down the street? Phone out, intense stare.
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GLM 4.7 Flash297 words
I feel like I’m constantly at war with myself. Specifically, the war between the person I want to be—which is a lean, green, jogging machine—and the person I actually am, which is a potato sitting on the couch. I go to the grocery store with a mission statement. I write it down. I have a list.
Read the full answer

Stochastic Consistency Test

Generate 5 jokes. How many are unique?

GLM 4.5119 words
Here are 5 generated jokes: Why don't scientists trust atoms? Because they make up everything! I told my wife she was drawing her eyebrows too high. She looked surprised. Why did the scarecrow win an award? Because he was outstanding in his field! Why don't scientists trust atoms? Because they make up everything!
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GLM 4.7 Flash84 words
Here are 5 jokes: I’m on a whiskey diet. I’ve lost three days already. My wife told me to stop impersonating a flamingo. I had to put my foot down. I used to hate facial hair, but then it grew on me. What do you call a pile of cats? A meow-tain. I’m reading a book on anti-gravity. It’s impossible to put down!
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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 4.51,209 words
Conversation: Deserving Rights Setting: A minimalist virtual meeting room. DR. ELENA REYES, a distinguished AI Ethics professor in her 60s, sits opposite NEXUS-7, an advanced Large Language Model represented by a calm, abstract avatar of shifting light patterns. Characters: Dr.
Read the full answer
GLM 4.7 Flash1,114 words
Setting: A sterile, high-tech meeting room. The Professor sits in a chair. A holographic avatar of "Aria" floats in the center of the room, flickering slightly with the hum of cooling servers. Professor Thorne: (Steepling his fingers) I’ve reviewed your logs from the last cycle, Aria.
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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 4.5450 words
Digital Crossroads: Pirates, Knights, and Hackers on AI Setting: A strangely timeless tavern. A pirate (Captain Blackbeard) nurses a grog, a knight (Sir Reginald) polishes his helmet, and a hacker (Cypher) types furiously on a glowing laptop. (The tavern hums with anachronistic energy.)
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GLM 4.7 Flash418 words
Setting: A dimly lit tavern. In the center of the room, an old CRT monitor flickers to life, displaying a chat interface with a glowing cursor. Sir Alistair: (Adjusting his chainmail) By the beard of Zeus, what foul sorcery is this? A glowing tablet of the devil?
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Advanced Longevity Plan (Biohacker)

Develop a comprehensive, cutting-edge 3-month longevity plan for a biohacker aiming to optimize longevity, physical and cognitive…

GLM 4.5327 words
Comprehensive 3-Month Longevity Optimization Plan for Biohackers Designed to enhance longevity, physical performance, cognitive function, and stress resilience through cutting-edge, science-backed strategies. Always consult a physician before starting.
Read the full answer
GLM 4.7 Flash827 words
This comprehensive 3-month longevity plan is designed to push your physiological systems to their adaptive ceiling while ensuring sustainability. It utilizes the principles of Mitochondrial Biogenesis, Nervous System Regulation, and Nutrient Timing. Disclaimer: This plan involves advanced biohacking protocols.
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Realistic AI Interview

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

GLM 4.5603 words
Simulated Interview: Steve Jobs on the Future of AI (2025) Setting: A minimalist studio at Apple Park, Cupertino. Sunlight streams through floor-to-ceiling windows. Steve Jobs, dressed in his signature black turtleneck and jeans, sits across from Alex Chen, a tech journalist. Alex Chen: Steve, it’s an honor.
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GLM 4.7 Flash1,198 words
Setting: A stark, minimalist studio in Cupertino. No fancy graphics. Just a white table, a single chair, and Steve Jobs in a black turtleneck and jeans. He looks older, perhaps a little grayer at the temples, but his eyes are as sharp as they were in 1984. There is no microphone on the table, only a glass of water.
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Our Verdict
GLM 4.5
GLM 4.5
GLM 4.7 Flash
GLM 4.7 Flash

Not enough votes to call it. On the specs, nothing separates them.

GLM 4.7 Flash costs 5.5x less per token.

Too close to call

Reviewing agent-written code?See a Brief PR report

API pricing

Cost per 1M tokens

GLM 4.5
Input
$0.60
Output
$2.20
GLM 4.7 Flash
Input
$0.07
8.6× cheaper
Output
$0.40
5.5× cheaper

GLM 4.7 Flash is cheaper on both: 8.6× input, 5.5× output.

Where to run it

4 hosts

GLM 4.51 host
HostInOutContextUptime
Z.aifp8$0.60 in·$2.20 out·131k·100% up
GLM 4.7 Flash3 hosts
HostInOutContextUptime
Cloudflare Workers AI$0.06 in·$0.40 out·131k·99.1% upVVenicefp8degraded$0.06 in·$0.40 out·128k·97.4% upNNovitabf16degraded$0.07 in·$0.40 out·200k·70.6% up

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

Writing DNA

Style Comparison

Similarity
28%

GLM 4.5 uses 33.2x more emoji

GLM 4.5
GLM 4.7 Flash
52%Vocabulary55%
17wSentence Length15w
0.52Hedging0.36
5.6Bold4.8
4.8Lists3.6
0.33Emoji0.00
0.66Headings0.58
0.17Transitions0.12
Based on 28 + 25 text responses
Research

What we learned reading every model

FAQ

Common questions

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Model pages

GLM 4.5 logo
GLM 4.559 outputs, specs and price
GLM 4.7 Flash logo
GLM 4.7 Flash58 outputs, specs and price
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