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  5. GLM 5.3 FlashXvsGPT-5.2
Updated Sep 2026

GLM 5.3 FlashXvsGPT-5.2

GLM 5.3 FlashX is cheaper than GPT-5.2 at $0.37/M vs $1.75/M input tokens.

GLM 5.3 FlashX and GPT-5.2 compared across 12 shared prompts
SpecGLM 5.3 FlashXGPT-5.2
Input price$0.37/M tokens$1.75/M tokens
Output price$1.25/M tokens$14/M tokens
Context window1.0M tokens400K tokens
Weights—Closed
Free API (OpenRouter)NoNo
ReleasedSep 2026Dec 2025
Side by side

Same prompt, both answers

Opening lines from 2 of the 12 prompts both answered. Formatting stripped, words untouched.

Beginner's Longevity Plan

Outline a simple, actionable 1-month plan for someone starting their journey towards better health and longevity. Focus on 3 key areas…

GLM 5.3 FlashX347 words
1-Month Health & Longevity Starter Plan Week 1: Build the Foundation 🥗 Diet Add one vegetable or fruit to every meal (don't restrict anything yet) Drink a glass of water when you wake up each morning 🏃 Exercise Take a 10–15 minute walk daily (same time each day builds the habit) Do 2 sets of 5 squats and 10 wall…
Read the full answer
GPT-5.2807 words
Below is a simple, beginner-friendly 1‑month plan built around 3 pillars: Nutrition, Movement, and Recovery (Sleep + Stress). It’s designed to be practical, low-friction, and sustainable.
Read the full answer

Simple 7-Ingredient Recipe

Create a simple recipe for a delicious dish (sweet or savory) using only 7 common pantry ingredients. Include a creative name for the dish…

GLM 5.3 FlashX172 words
Golden Honey Garlic Chickpea Crunch A crispy, sweet-savory skillet dish that works as a snack, side, or topping for rice. Ingredients (7): 1 can chickpeas (drained, patted dry) 3 tbsp honey 3 tbsp soy sauce 3 cloves garlic (minced) 2 tbsp olive oil ½ tsp red pepper flakes 2 tbsp sesame seeds (or crushed peanuts) Prep…
Read the full answer
GPT-5.2211 words
Pantry “Golden Garlic Butter Pasta” (7-Ingredient Comfort Bowl) A rich, glossy pasta with garlicky butter and a pop of chili—made entirely from common pantry staples.
Read the full answer
Our Verdict
GLM 5.3 FlashX
GLM 5.3 FlashX
GPT-5.2
GPT-5.2

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

GLM 5.3 FlashX costs 11x less per token.

Too close to call
API pricing

Cost per 1M tokens

GLM 5.3 FlashX
Input
$0.37
4.7× cheaper
Output
$1.25
11× cheaper
GPT-5.2
Input
$1.75
Output
$14.00

GLM 5.3 FlashX is cheaper on both: 4.7× input, 11× output.

Where to run it

3 hosts

GLM 5.3 FlashX1 host
HostInOutContextUptime
Z.aifp8$0.37 in·$1.25 out·1M·100% up
GPT-5.22 hosts
HostInOutContextUptime
Azure AI Foundry$1.75 in·$14.00 out·400k·100% upOpenAI$1.75 in·$14.00 out·400k·99.6% up

Per million tokens. Prices and uptime via OpenRouter, checked 23 Sep 2026.

Research

What we learned reading every model

FAQ

Common questions

GLM 5.3 FlashX is developed by Zhipu AI while GPT-5.2 is developed by OpenAI. GLM 5.3 FlashX has a 1.0M token context window vs GPT-5.2's 400K. You can compare their actual outputs across 12 challenges on Rival to see how they differ in practice.

It depends on your use case. GLM 5.3 FlashX and GPT-5.2 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 12 challenges so you can judge which fits your needs best.

GLM 5.3 FlashX costs $0.37/M input tokens and GPT-5.2 costs $1.75/M input tokens. GLM 5.3 FlashX is $1.38/M cheaper per input. Check their side-by-side outputs on Rival to see if the price difference is justified by quality.

This page shows a side-by-side comparison of GLM 5.3 FlashX and GPT-5.2 across shared challenges. You can vote on which model produced the better output in a blind duel. Browsing and voting are free. No account is needed to look; signing in only saves your votes and likes.

Keep exploring

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Same lab, same size, long tail

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GLM 5.3 FlashX vs GLM 5.3 FlashSame lab
GLM 5.3 FlashX logoGLM 5.2 logo
GLM 5.3 FlashX vs GLM 5.2Same lab
GPT-5.2 logoGPT-6 Astra Pro logo
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GPT-5.2 logoGPT-6 Astra logo
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GLM 5.3 FlashX vs MiMo-V2.5-ProNew provider
GPT-5.2 logoMiMo-V2.6-Flash logo
GPT-5.2 vs MiMo-V2.6-FlashNew provider
GPT-5.2 logoMiMo-V2.6-Pro logo
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GLM 5.3 FlashX vs MiniMax M1New provider

Model pages

GLM 5.3 FlashX logo
GLM 5.3 FlashX12 outputs, specs and price
GPT-5.2 logo
GPT-5.253 outputs, specs and price
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