What is the difference between GPT-4.5 and Qwen3.8 Max Prime?

GPT-4.5 is developed by OpenAI while Qwen3.8 Max Prime is developed by Qwen. GPT-4.5 has a 128K token context window vs Qwen3.8 Max Prime's 1.0M. You can compare their actual outputs across 3 challenges on Rival to see how they differ in practice.

Which is better, GPT-4.5 or Qwen3.8 Max Prime?

It depends on your use case. GPT-4.5 and Qwen3.8 Max Prime each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 3 challenges so you can judge which fits your needs best.

How much does GPT-4.5 cost compared to Qwen3.8 Max Prime?

GPT-4.5 costs $75/M input tokens and Qwen3.8 Max Prime costs $4/M input tokens. Qwen3.8 Max Prime is $71.00/M cheaper per input. Check their side-by-side outputs on Rival to see if the price difference is justified by quality.

How can I compare GPT-4.5 and Qwen3.8 Max Prime on Rival?

This page shows a side-by-side comparison of GPT-4.5 and Qwen3.8 Max Prime 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.

Updated Sep 2026

GPT-4.5vsQwen3.8 Max Prime

Qwen3.8 Max Prime is cheaper than GPT-4.5 at $4/M vs $75/M input tokens.

GPT-4.5 and Qwen3.8 Max Prime compared across 3 shared prompts
Spec	GPT-4.5	Qwen3.8 Max Prime
Input price	$75/M tokens	$4/M tokens
Output price	$150/M tokens	$12/M tokens
Context window	128K tokens	1.0M tokens
Weights	—	Closed
Free API (OpenRouter)	No	No
Released	Feb 2025	Sep 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…

GPT-4.5153 words

Sweet Cinnamon Sugar Swirls Ingredients: 1 sheet puff pastry, thawed 1/4 cup granulated sugar 1 tablespoon cinnamon 2 tablespoons melted butter Pinch of salt 1 teaspoon vanilla extract Powdered sugar (optional for dusting) Prep Time: 10 minutes Cook Time: 15 minutes Total Time: 25 minutes Instructions: Preheat your…

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Qwen3.8 Max Prime223 words

🍯 Golden Hour Noodles A sweet, savory, garlicky pasta that tastes like it took way more effort than it did. Ingredients (7) # Ingredient Amount 1 Spaghetti 8 oz (half a box) 2 Butter 3 tablespoons 3 Garlic, minced 4 cloves 4 Honey 2 tablespoons 5 Soy sauce 1 tablespoon 6 Red pepper flakes ½ teaspoon 7 Parmesan cheese…

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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…

GPT-4.5202 words

Longevity Optimization Protocol (3-Month Timeline) Month 1: Establish Foundational Habits & Baseline Metrics Full biomarker panel & epigenetic age test. Wearable setup: Oura/WHOOP, CGM, HR chest strap. Diet: 5-day keto (70/25/5) + 2 carb-refeed days; 16:8 IF + weekly 24-h fast.

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Qwen3.8 Max Prime2,622 words

The Apex Longevity Protocol: A 3-Month Biohacker's Blueprint Disclaimer: This plan is for informational purposes only. Consult a physician before beginning any new supplement, fasting, or exercise protocol. Bloodwork and medical clearance are prerequisites.

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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…

GPT-4.5322 words

Dish Title: "Ocean & Earth Symphony: Kombu-Cured Venison, Sea Urchin Custard, Black Garlic Soil, and Smoked Cherry Blossom Emulsion" Conceptual Narrative: This composition embodies the delicate interplay between land and sea, exploring the subtle yet profound connection between umami-rich sea elements and earthy forest…

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Qwen3.8 Max Prime1,844 words

"Petrichor" The Forest Floor After Rain Conceptual Narrative Petrichor — from the Greek petra (stone) and ichor (the fluid that flows in the veins of the gods) — is the scent produced when rain falls on dry earth.

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Our Verdict

GPT-4.5

Qwen3.8 Max Prime

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

Qwen3.8 Max Prime costs 13x less per token.

Too close to call

API pricing

Cost per 1M tokens

GPT-4.5

Input

$75.00

Output

$150.00

Qwen3.8 Max Prime

Input

$4.00

19× cheaper

Output

$12.00

13× cheaper

Qwen3.8 Max Prime is cheaper on both: 19× input, 13× output.

Where to run it

1 host

GPT-4.5

No hosts listed on OpenRouter.

Qwen3.8 Max Prime1 host

HostInOutContextUptime

Alibaba Cloud$4.00 in$12.00 out1M99.9% up

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

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

Same prompt, both answers

Simple 7-Ingredient Recipe

Advanced Longevity Plan (Biohacker)

Michelin Star Recipe Design

Cost per 1M tokens

1 host

What we learned reading every model

Common questions

What is the difference between GPT-4.5 and Qwen3.8 Max Prime?

Which is better, GPT-4.5 or Qwen3.8 Max Prime?

How much does GPT-4.5 cost compared to Qwen3.8 Max Prime?

How can I compare GPT-4.5 and Qwen3.8 Max Prime on Rival?

More comparisons

Against the newest arrivals

Same lab, same size, long tail

Model pages

Same prompt, both answers

Simple 7-Ingredient Recipe

Advanced Longevity Plan (Biohacker)

Michelin Star Recipe Design

Cost per 1M tokens

1 host

What we learned reading every model

Common questions

What is the difference between GPT-4.5 and Qwen3.8 Max Prime?

Which is better, GPT-4.5 or Qwen3.8 Max Prime?

How much does GPT-4.5 cost compared to Qwen3.8 Max Prime?

How can I compare GPT-4.5 and Qwen3.8 Max Prime on Rival?

More comparisons

Against the newest arrivals

Same lab, same size, long tail

Model pages