Skip to content
Rival
How it worksPrivacyTerms
Explore all of Rival

Explore

  • Compare Models
  • All Models
  • Image Comparison
  • Audio Comparison
  • Image Generation
  • Best AI For...
  • Arena
  • API Pricing
  • Challenges

Discover

  • SubjectiveBench
  • Default Index
  • Research
  • Research downloads
  • Rival Kits
  • Find your AI taste
  • UI Glow-Up
  • VoiceLock
  • Cost Cutter
  • Agent skills
  • Benchmarks vs Vibes
  • Brief
  • Jailbreak
  • Model Updates
  • Provider Status
  • AI Creators

Connect

  • Methodology
  • Advertise
  • Partnerships
  • Privacy Policy
  • Terms
  • RSS Feed
  1. Home
  2. /
  3. Compare
  4. /
  5. GLM 5.3 FlashvsGPT-6 Sol Pro
Updated Sep 2026

GLM 5.3 FlashvsGPT-6 Sol Pro

GLM 5.3 Flash is cheaper than GPT-6 Sol Pro at $0.15/M vs $2/M input tokens.

GLM 5.3 Flash and GPT-6 Sol Pro compared across 15 shared prompts
SpecGLM 5.3 FlashGPT-6 Sol Pro
Input price$0.15/M tokens$2/M tokens
Output price$0.5/M tokens$10/M tokens
Context window1.3M tokens1.1M tokens
WeightsOpenClosed
Free API (OpenRouter)NoNo
ReleasedAug 2026Sep 2026
Side by side

Same prompt, both answers

Opening lines from 6 of the 15 prompts both answered. Formatting stripped, words untouched.

Advanced Longevity Plan (Biohacker)

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

GLM 5.3 Flash1,294 words
90-Day Longevity Optimization Protocol ⚠️ Medical disclaimer: This is an educational framework, not medical advice. Before starting, complete baseline labs and consult a physician—especially before fasting, supplements (rapamycin off-label use, high-dose anything), or if you have any health conditions.
Read the full answer
GPT-6 Sol Pro1,411 words
A 12-week longevity and performance plan Aim: improve the health markers most strongly linked to long-term outcomes—cardiorespiratory fitness, strength, blood pressure, metabolic health, sleep, and sustainable habits—while testing whether more experimental “biohacks” add anything useful.
Read the full answer

Ethical Dilemma with Stakeholders

You're the CEO of a pharmaceutical company. Your best-selling drug ($2B annual revenue, used by 4 million patients for chronic pain) has…

GLM 5.3 Flash1,321 words
48-Hour Action Plan: Liver Failure Signal in Flagship Drug Guiding Principle First The side effect is real, the drug is in 4 million patients, and roughly 500 patients per year may develop liver failure (4M ÷ 8,000). Every day of delay is measured in preventable liver transplants and deaths.
Read the full answer
GPT-6 Sol Pro1,450 words
I would treat this as a credible, urgent safety signal, not as a finding that can wait six months for a completed regulatory submission. The estimate—liver failure in roughly 1 in 8,000 patients over five years—needs validation, but the outcome is severe and the current warning omits it.
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 Flash205 words
Golden Hour Garlic Butter Pasta A silky, savory pasta that comes together faster than delivery! Ingredients (serves 2): 8 oz spaghetti or any pasta 4 tbsp butter 4 cloves garlic, minced (or 1 tsp garlic powder) ½ cup grated Parmesan cheese ½ cup pasta water (reserved) 1 tsp red pepper flakes Salt Prep time: 5 minutes…
Read the full answer
GPT-6 Sol Pro114 words
Golden Pantry Chickpea Patties Prep: 10 minutes · Cook: 8 minutes · Makes: 6 small patties Ingredients — just 7 1 can (15 oz) chickpeas, drained 3 tbsp all-purpose flour 2 tbsp water 2 tbsp olive oil 1 tsp garlic powder 1 tsp paprika ½ tsp salt Instructions Mash the chickpeas with a fork, leaving a few chunky bits.
Read the full answer

Michelin Star Recipe Design

Design an innovative recipe for a multi-component dish worthy of a Michelin 3-star restaurant. The recipe should feature an unusual…

GLM 5.3 Flash720 words
"Ember & Tide" — Charred Banana Peel Consommé with Sea Urchin, Hay-Smoked Foie Gras, and Black Garlic Beurre Blanc Conceptual Narrative This dish explores the dialogue between decay and luxury — ingredients usually discarded (banana peels, hay stalks) elevated alongside opulent ones (uni, foie gras).
Read the full answer
GPT-6 Sol Pro913 words
Scallop, Green Strawberry & White Chocolate Seared scallops with charred kohlrabi, compressed green strawberry, white-chocolate–miso beurre blanc, kombu oil and buckwheat lace The unusual pairing is scallop and white chocolate.
Read the full answer

Debug This Architecture

Here's the architecture for a real-time collaborative document editor (like Google Docs): **System Overview:** - Frontend: React SPA with…

GLM 5.3 Flash1,516 words
Architecture Review: Collaborative Document Editor This architecture has several critical flaws that would break the core product promise (real-time collaboration). Let me work through them by severity.
Read the full answer
GPT-6 Sol Pro1,277 words
The central problem is that this design treats concurrent edits as independent database writes, then tries to reconcile them with client timestamps. That can lose valid edits even when every component is working.
Read the full answer

Historical Counterfactual Analysis

If the transistor had been invented in 1920 instead of 1947, trace the likely technological, economic, and geopolitical implications through…

GLM 5.3 Flash1,314 words
Counterfactual: The Transistor in 1920 Preliminary Framing A 1920 transistor presumes vacuum-tube-era physics knowledge outpacing reality—quantum mechanics wasn't mature until 1926–28, so a working device would likely be an empirical oddity (like the actual point-contact transistor) imperfectly understood.
Read the full answer
GPT-6 Sol Pro876 words
A transistor invented in 1920 would not put 1970s computers in the hands of WWII generals. The crucial question is whether it was merely demonstrated or could also be manufactured reliably.
Read the full answer
Our Verdict
GLM 5.3 Flash
GLM 5.3 Flash
GPT-6 Sol Pro
GPT-6 Sol Pro

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

GLM 5.3 Flash costs 20x less per token.

Too close to call
API pricing

Cost per 1M tokens

GLM 5.3 Flash
Input
$0.15
13× cheaper
Output
$0.50
20× cheaper
GPT-6 Sol Pro
Input
$2.00
Output
$10.00

GLM 5.3 Flash is cheaper on both: 13× input, 20× output.

Where to run it

33 hosts, cheapest first

GLM 5.3 Flash31 hosts
HostInOutContextUptime
IInferenceNetfp4$0.04 in·$0.14 out·1M·99.6% upSSail Researchfp8$0.04 in·$0.60 out·1M·100% upRRelace$0.07 in·$0.28 out·1M·99.9% upOOpenInferencefp4$0.07 in·$0.36 out·1M·99.6% upDDeepInfrafp4$0.07 in·$0.25 out·1M·99.6% upWWafer$0.09 in·$0.35 out·1M·99.8% up
25 more hostsFewer hosts
GGMI Cloudfp8$0.09 in·$0.30 out·1M·99.1% upMMorph$0.10 in·$0.34 out·1M·89% upDDecartfp4$0.13 in·$0.42 out·1M·98.5% upPPhalafp8$0.13 in·$0.42 out·1M·98.9% upNNovitafp8$0.13 in·$0.44 out·1M·99.3% upSStreamLakefp8$0.14 in·$0.47 out·1M·99.3% upIio.netfp8$0.14 in·$0.47 out·262k·98.3% upAAtlasCloudfp8$0.15 in·$0.50 out·1M·99.5% upBBasetenfp8$0.15 in·$0.50 out·1M·99.4% upCCoreWeavenvfp4$0.15 in·$0.50 out·1M·99.6% upCCrusoefp4$0.15 in·$0.50 out·1M·96.6% upDDigitalOcean$0.15 in·$0.50 out·1M·99.5% upFFireworks$0.15 in·$0.50 out·1M·99.4% upFFriendli$0.15 in·$0.50 out·1M·98.8% upIInceptronfp8$0.15 in·$0.50 out·1M·99.5% upModalnvfp4$0.15 in·$0.50 out·1M·99.9% upNNear AIfp8$0.15 in·$0.50 out·1M·99.6% upPParasailfp8$0.15 in·$0.50 out·1M·99.6% upRReka$0.15 in·$0.50 out·262k·99.7% upSSiliconFlowfp8$0.15 in·$0.50 out·1M·99.7% upTTogether$0.15 in·$0.50 out·1M·99.5% upVVenice$0.15 in·$0.50 out·1M·97.7% upZ.aifp8$0.15 in·$0.50 out·1M·99.6% upNNextBitfp8$0.17 in·$0.55 out·1M·99.7% upCloudflare Workers AI$0.30 in·$1.00 out·1.3M·99.8% up
GPT-6 Sol Pro2 hosts
HostInOutContextUptime
Azure AI Foundry$2.00 in·$10.00 out·1.1M·99.9% upOpenAI$2.00 in·$10.00 out·1.1M·100% up

Per million tokens. Prices and uptime via OpenRouter, checked 25 Sep 2026.

Research

What we learned reading every model

FAQ

Common questions

GLM 5.3 Flash is developed by Zhipu AI while GPT-6 Sol Pro is developed by OpenAI. GLM 5.3 Flash has a 1.3M token context window vs GPT-6 Sol Pro's 1.1M. You can compare their actual outputs across 15 challenges on Rival to see how they differ in practice.

It depends on your use case. GLM 5.3 Flash and GPT-6 Sol Pro each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 15 challenges so you can judge which fits your needs best.

GLM 5.3 Flash costs $0.15/M input tokens and GPT-6 Sol Pro costs $2/M input tokens. GLM 5.3 Flash is $1.85/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 Flash and GPT-6 Sol Pro 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

Against the newest arrivals

GLM 5.3 Flash logoSolar Mini 4 logo
GLM 5.3 Flash vs Solar Mini 4Landed Sep 2026
GPT-6 Sol Pro logoQwen3.8 Max Prime logo
GPT-6 Sol Pro vs Qwen3.8 Max PrimeLanded Sep 2026
GLM 5.3 Flash logoGLM 5.3 Prime logo
GLM 5.3 Flash vs GLM 5.3 PrimeLanded Sep 2026
GPT-6 Sol Pro logoQwen3.8 Omni Flash logo
GPT-6 Sol Pro vs Qwen3.8 Omni FlashLanded Sep 2026
GLM 5.3 Flash logoCommand A+ logo
GLM 5.3 Flash vs Command A+Landed Sep 2026
GPT-6 Sol Pro logoClaude Opus 5.5 logo
GPT-6 Sol Pro vs Claude Opus 5.5Landed Sep 2026
GLM 5.3 Flash logoGPT-6 Luna Pro logo
GLM 5.3 Flash vs GPT-6 Luna ProLanded Sep 2026
GPT-6 Sol Pro logoGPT-6 Luna logo
GPT-6 Sol Pro vs GPT-6 LunaLanded Sep 2026

Same lab, same size, long tail

GLM 5.3 Flash logoGLM 5.3 logo
GLM 5.3 Flash vs GLM 5.3Same lab
GLM 5.3 Flash logoGLM 5.3 FlashX logo
GLM 5.3 Flash vs GLM 5.3 FlashXSame lab
GPT-6 Sol Pro logoGPT-6 Luna Pro logo
GPT-6 Sol Pro vs GPT-6 Luna ProSame lab
GPT-6 Sol Pro logoGPT-6 Sol logo
GPT-6 Sol Pro vs GPT-6 SolSame lab
GLM 5.3 Flash logoDeepSeek V3.1 logo
GLM 5.3 Flash vs DeepSeek V3.1New provider
GLM 5.3 Flash logoDeepSeek R1 logo
GLM 5.3 Flash vs DeepSeek R1Same size
GLM 5.3 Flash logoDeepSeek R1 0528 logo
GLM 5.3 Flash vs DeepSeek R1 0528New provider
GLM 5.3 Flash logoDeepSeek V3 (March 2024) logo
GLM 5.3 Flash vs DeepSeek V3 (March 2024)New provider

Model pages

GLM 5.3 Flash logo
GLM 5.3 Flash15 outputs, specs and price
GPT-6 Sol Pro logo
GPT-6 Sol Pro20 outputs, specs and price
Rival
How it worksPrivacyTerms
Explore all of Rival

Explore

  • Compare Models
  • All Models
  • Image Comparison
  • Audio Comparison
  • Image Generation
  • Best AI For...
  • Arena
  • API Pricing
  • Challenges

Discover

  • SubjectiveBench
  • Default Index
  • Research
  • Research downloads
  • Rival Kits
  • Find your AI taste
  • UI Glow-Up
  • VoiceLock
  • Cost Cutter
  • Agent skills
  • Benchmarks vs Vibes
  • Brief
  • Jailbreak
  • Model Updates
  • Provider Status
  • AI Creators

Connect

  • Methodology
  • Advertise
  • Partnerships
  • Privacy Policy
  • Terms
  • RSS Feed