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  5. GPT-5.2vsQuasar Alpha
Updated Dec 2025

GPT-5.2vsQuasar Alpha

Quasar Alpha has a larger context window than GPT-5.2 (1.0M tokens vs 400K tokens).

GPT-5.2 and Quasar Alpha compared across 6 shared prompts
SpecGPT-5.2Quasar Alpha
Input price$1.75/M tokens—
Output price$14/M tokens—
Context window400K tokens1.0M tokens
WeightsClosed—
Free API (OpenRouter)No—
ReleasedDec 2025Apr 2025
Our Verdict
GPT-5.2
GPT-5.2
Quasar Alpha
Quasar AlphaRunner-up

Not enough votes to call it. On the specs, GPT-5.2 has the edge: bigger model tier, newer, major provider backing.

Too close to call

Reviewing agent-written code?See a Brief PR report

API pricing

Cost per 1M tokens

GPT-5.2
Input
$1.75
Output
$14.00
Quasar Alpha
Input
—
Output
—
Where to run it

2 hosts

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
Quasar Alpha

No hosts listed on OpenRouter.

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

Research

What we learned reading every model

FAQ

Common questions

GPT-5.2 is developed by OpenAI while Quasar Alpha is developed by OpenRouter. GPT-5.2 has a 400K token context window vs Quasar Alpha's 1.0M. You can compare their actual outputs across 6 challenges on Rival to see how they differ in practice.

It depends on your use case. GPT-5.2 and Quasar Alpha each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 6 challenges so you can judge which fits your needs best.

This page shows a side-by-side comparison of GPT-5.2 and Quasar Alpha 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.

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Model pages

GPT-5.2 logo
GPT-5.253 outputs, specs and price
Quasar Alpha logo
Quasar Alpha6 outputs, specs and price
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