What is the difference between GPT-6 Astra and Hy4 Preview?

GPT-6 Astra is developed by OpenAI while Hy4 Preview is developed by Tencent. GPT-6 Astra has a 1.1M token context window vs Hy4 Preview's 1.0M. You can compare their actual outputs across 54 challenges on Rival to see how they differ in practice.

Which is better, GPT-6 Astra or Hy4 Preview?

It depends on your use case. GPT-6 Astra and Hy4 Preview each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 54 challenges so you can judge which fits your needs best.

How much does GPT-6 Astra cost compared to Hy4 Preview?

GPT-6 Astra costs $10/M input tokens and Hy4 Preview costs $0.834/M input tokens. Hy4 Preview is $9.17/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-6 Astra and Hy4 Preview on Rival?

This page shows a side-by-side comparison of GPT-6 Astra and Hy4 Preview 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.

What is the difference between GPT-6 Astra and Hy4 Preview?

GPT-6 Astra is developed by OpenAI while Hy4 Preview is developed by Tencent. GPT-6 Astra has a 1.1M token context window vs Hy4 Preview's 1.0M. You can compare their actual outputs across 54 challenges on Rival to see how they differ in practice.

Which is better, GPT-6 Astra or Hy4 Preview?

It depends on your use case. GPT-6 Astra and Hy4 Preview each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 54 challenges so you can judge which fits your needs best.

How much does GPT-6 Astra cost compared to Hy4 Preview?

GPT-6 Astra costs $10/M input tokens and Hy4 Preview costs $0.834/M input tokens. Hy4 Preview is $9.17/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-6 Astra and Hy4 Preview on Rival?

This page shows a side-by-side comparison of GPT-6 Astra and Hy4 Preview 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-6 AstravsHy4 Preview

Hy4 Preview is cheaper than GPT-6 Astra at $0.834/M vs $10/M input tokens.

GPT-6 Astra and Hy4 Preview compared across 54 shared prompts
Spec	GPT-6 Astra	Hy4 Preview
Input price	$10/M tokens	$0.834/M tokens
Output price	$50/M tokens	$2.501/M tokens
Context window	1.1M tokens	1.0M tokens
Weights	Closed	—
Free API (OpenRouter)	No	No
Released	Sep 2026	Aug 2026

Our Verdict

GPT-6 Astra

Hy4 Preview

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

Hy4 Preview costs 20x less per token.

Too close to call

API pricing

Cost per 1M tokens

GPT-6 Astra

Input

$10.00

Output

$50.00

Hy4 Preview

Input

$0.83

12× cheaper

Output

$2.50

20× cheaper

Hy4 Preview is cheaper on both: 12× input, 20× output.

Where to run it

3 hosts

GPT-6 Astra2 hosts

HostInOutContextUptime

OpenAI$10.00 in$50.00 out1.1M99.9% up Azure AI Foundrydegraded$10.00 in$50.00 out1.1M99.4% up

Hy4 Preview1 host

HostInOutContextUptime

Tencentfp8$0.83 in$2.50 out1M100% up

Per million tokens. Prices and uptime via OpenRouter, checked 6 Sep 2026.

Writing DNA

Style Comparison

Similarity

32%

Hy4 Preview uses 11.0x more emoji

GPT-6 Astra

Hy4 Preview

62%Vocabulary53%

15wSentence Length16w

0.87Hedging0.43

4.0Bold5.9

2.3Lists3.8

0.04Emoji0.40

0.77Headings0.67

0.10Transitions0.13

Based on 27 + 27 text responses

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

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Updated Sep 2026

GPT-6 AstravsHy4 Preview

Hy4 Preview is cheaper than GPT-6 Astra at $0.834/M vs $10/M input tokens.

GPT-6 Astra and Hy4 Preview compared across 54 shared prompts
Spec	GPT-6 Astra	Hy4 Preview
Input price	$10/M tokens	$0.834/M tokens
Output price	$50/M tokens	$2.501/M tokens
Context window	1.1M tokens	1.0M tokens
Weights	Closed	—
Free API (OpenRouter)	No	No
Released	Sep 2026	Aug 2026