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  5. GPT-5 CodexvsHy3
Updated Jul 2026

GPT-5 CodexvsHy3

Hy3 is the newer model, released after GPT-5 Codex.

GPT-5 Codex and Hy3 compared across 13 shared prompts
SpecGPT-5 CodexHy3
Input price—$0.132/M tokens
Output price—$0.528/M tokens
Context window—262K tokens
Weights—Open
Free API (OpenRouter)NoNo
ReleasedSep 2025Jul 2026
Side by side

Same prompt, both answers

Opening lines from 2 of the 13 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…

GPT-5 Codex569 words
1-Month Jumpstart to Better Health & Longevity This plan is designed for beginners and emphasizes steady, sustainable progress. It focuses on three key areas: diet, movement, and sleep & stress. Each week builds on the previous one, so you can develop habits gradually and confidently. 🥗 1.
Read the full answer
Hy3306 words
Here’s a simple, beginner-friendly 1-month plan built around three foundational pillars of health and longevity: Diet, Movement, and Sleep. The goal is to build sustainable habits, not perfection. Diet – Nourish Without Obsessing Focus: Add before you subtract; keep it practical.
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…

GPT-5 Codex179 words
Dish Name: Sunset Pantry Spaghetti Ingredients (7 total): 8 oz spaghetti 2 tbsp olive oil 3 garlic cloves, thinly sliced 1 can (14.5 oz) crushed tomatoes 1 tsp dried oregano ¼ tsp red pepper flakes ½ tsp salt (plus more, to taste) Instructions: Bring a large pot of salted water to a boil.
Read the full answer
Hy3178 words
Dish Name: Ruby Hurricane Pasta Ingredients (exactly 7 common pantry staples): Spaghetti (or any dry pasta) Canned diced tomatoes Garlic (pre-minced or whole cloves) Extra-virgin olive oil Red pepper flakes Salt Grated Parmesan (shelf-stable style) (Water for boiling pasta is assumed free and not counted.)
Read the full answer
Our Verdict
GPT-5 Codex
GPT-5 Codex
Hy3
Hy3

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

Too close to call
API pricing

Cost per 1M tokens

GPT-5 Codex
Input
—
Output
—
Hy3
Input
$0.13
Output
$0.53
Where to run it

6 hosts, cheapest first

GPT-5 Codex

No hosts listed on OpenRouter.

Hy36 hosts
HostInOutContextUptime
Tencentfp8$0.08 in·$0.33 out·262k·99.9% upDDeepInfrafp4$0.13 in·$0.53 out·262k·99.6% upGGMI Cloudbf16$0.14 in·$0.58 out·262k·98.6% upNNovita$0.14 in·$0.58 out·262k·99.7% upPPhala$0.15 in·$0.64 out·262k·99.9% upAAtlasCloudfp8$0.20 in·$0.80 out·262k·99.9% up

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

Research

What we learned reading every model

FAQ

Common questions

GPT-5 Codex is developed by OpenAI while Hy3 is developed by Tencent. You can compare their actual outputs across 13 challenges on Rival to see how they differ in practice.

It depends on your use case. GPT-5 Codex and Hy3 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 13 challenges so you can judge which fits your needs best.

This page shows a side-by-side comparison of GPT-5 Codex and Hy3 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 Codex logo
GPT-5 Codex50 outputs, specs and price
Hy3 logo
Hy314 outputs, specs and price
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