What is the difference between Claude Fable 5 and Hy4 Preview?

Claude Fable 5 is developed by Anthropic while Hy4 Preview is developed by Tencent. Claude Fable 5 has a 1.0M 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, Claude Fable 5 or Hy4 Preview?

It depends on your use case. Claude Fable 5 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 Claude Fable 5 cost compared to Hy4 Preview?

Claude Fable 5 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 Claude Fable 5 and Hy4 Preview on Rival?

This page shows a side-by-side comparison of Claude Fable 5 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 Aug 2026

Claude Fable 5vsHy4 Preview

Hy4 Preview is cheaper than Claude Fable 5 at $0.834/M vs $10/M input tokens.

Claude Fable 5 and Hy4 Preview compared across 54 shared prompts
Spec	Claude Fable 5	Hy4 Preview
Input price	$10/M tokens	$0.834/M tokens
Output price	$50/M tokens	$2.501/M tokens
Context window	1.0M tokens	1.0M tokens
Weights	Closed	—
Free API (OpenRouter)	No	No
Released	Jun 2026	Aug 2026