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  5. Gemini 2.5 Flash Preview (thinking)vsGLM 5.3 FlashX
Updated Sep 2026

Gemini 2.5 Flash Preview (thinking)vsGLM 5.3 FlashX

Gemini 2.5 Flash Preview (thinking) is cheaper than GLM 5.3 FlashX at $0.175/M vs $0.37/M input tokens.

Gemini 2.5 Flash Preview (thinking) and GLM 5.3 FlashX compared across 2 shared prompts
SpecGemini 2.5 Flash Preview (thinking)GLM 5.3 FlashX
Input price$0.175/M tokens$0.37/M tokens
Output price$3.5/M tokens$1.25/M tokens
Context window1.0M tokens1.0M tokens
Free API (OpenRouter)NoNo
ReleasedApr 2025Sep 2026
Side by side

Same prompt, both answers

Opening lines from every prompt both answered. Formatting stripped, words untouched.

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…

Gemini 2.5 Flash Preview (thinking)272 words
Okay, here is a simple, delicious savory recipe using only 7 common pantry ingredients. Dish Name: Sunshine Lentil Soup This is a bright, comforting soup that\'s surprisingly flavorful with just a few staples.
Read the full answer
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

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…

Gemini 2.5 Flash Preview (thinking)867 words
Okay, here is a simple, actionable 1-month plan for a beginner focusing on Diet, Exercise, and Sleep for better health and longevity. Goal: To build foundational, sustainable habits in 3 key health areas over 30 days.
Read the full answer
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
Our Verdict
GLM 5.3 FlashX
GLM 5.3 FlashX
Gemini 2.5 Flash Preview (thinking)
Gemini 2.5 Flash Preview (thinking)Runner-up

Not enough votes to call it. On the specs, GLM 5.3 FlashX has the edge: bigger model tier, newer.

Too close to call
API pricing

Cost per 1M tokens

Gemini 2.5 Flash Preview (thinking)
Input
$0.17
2.1× cheaper
Output
$3.50
GLM 5.3 FlashX
Input
$0.37
Output
$1.25
2.8× cheaper

Gemini 2.5 Flash Preview (thinking) wins input (2.1× cheaper)·GLM 5.3 FlashX wins output (2.8× cheaper)

Where to run it

1 host

Gemini 2.5 Flash Preview (thinking)

No hosts listed on OpenRouter.

GLM 5.3 FlashX1 host
HostInOutContextUptime
Z.aifp8$0.37 in·$1.25 out·1M·100% up

Per million tokens. Prices and uptime via OpenRouter, checked 22 Sep 2026.

Research

What we learned reading every model

FAQ

Common questions

Gemini 2.5 Flash Preview (thinking) is developed by Google AI while GLM 5.3 FlashX is developed by Zhipu AI. Gemini 2.5 Flash Preview (thinking) has a 1.0M token context window vs GLM 5.3 FlashX's 1.0M. You can compare their actual outputs across 2 challenges on Rival to see how they differ in practice.

It depends on your use case. Gemini 2.5 Flash Preview (thinking) and GLM 5.3 FlashX each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 2 challenges so you can judge which fits your needs best.

Gemini 2.5 Flash Preview (thinking) costs $0.175/M input tokens and GLM 5.3 FlashX costs $0.37/M input tokens. Gemini 2.5 Flash Preview (thinking) is $0.20/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 Gemini 2.5 Flash Preview (thinking) and GLM 5.3 FlashX 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

More comparisons

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GLM 5.3 FlashX vs Solar Pro 4Landed Sep 2026
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Gemini 2.5 Flash Preview (thinking) vs Ling 3.0 FlashLanded Sep 2026
GLM 5.3 FlashX logoMuse Glimmer 30B logo
GLM 5.3 FlashX vs Muse Glimmer 30BLanded Sep 2026
Gemini 2.5 Flash Preview (thinking) logoGLM 5.3 logo
Gemini 2.5 Flash Preview (thinking) vs GLM 5.3Landed Sep 2026
GLM 5.3 FlashX logoTernary Bonsai 2 27B logo
GLM 5.3 FlashX vs Ternary Bonsai 2 27BLanded Sep 2026

Same lab, same size, long tail

Gemini 2.5 Flash Preview (thinking) logoGemini 3.8 Flash logo
Gemini 2.5 Flash Preview (thinking) vs Gemini 3.8 FlashSame lab
Gemini 2.5 Flash Preview (thinking) logoGemini 3.7 Flash logo
Gemini 2.5 Flash Preview (thinking) vs Gemini 3.7 FlashVersion compare
GLM 5.3 FlashX logoGLM 5.3 logo
GLM 5.3 FlashX vs GLM 5.3Same lab
GLM 5.3 FlashX logoGLM 5.3 Flash logo
GLM 5.3 FlashX vs GLM 5.3 FlashSame lab
GLM 5.3 FlashX logoHorizon Alpha logo
GLM 5.3 FlashX vs Horizon AlphaSame size
GLM 5.3 FlashX logoHorizon Beta logo
GLM 5.3 FlashX vs Horizon BetaSame size
GLM 5.3 FlashX logoHunter Alpha logo
GLM 5.3 FlashX vs Hunter AlphaNew provider
GLM 5.3 FlashX logoHy4 Preview logo
GLM 5.3 FlashX vs Hy4 PreviewNew provider

Model pages

Gemini 2.5 Flash Preview (thinking) logo
Gemini 2.5 Flash Preview (thinking)20 outputs, specs and price
GLM 5.3 FlashX logo
GLM 5.3 FlashX12 outputs, specs and price
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