What is the difference between Claude Fable 5.1 and Kimi Linear 48B A3B Instruct?

Claude Fable 5.1 is developed by Anthropic while Kimi Linear 48B A3B Instruct is developed by Moonshot AI. Claude Fable 5.1 has a 1.0M token context window vs Kimi Linear 48B A3B Instruct's 1.0M. You can compare their actual outputs across 6 challenges on Rival to see how they differ in practice.

Which is better, Claude Fable 5.1 or Kimi Linear 48B A3B Instruct?

It depends on your use case. Claude Fable 5.1 and Kimi Linear 48B A3B Instruct 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.

How much does Claude Fable 5.1 cost compared to Kimi Linear 48B A3B Instruct?

Claude Fable 5.1 costs $10/M input tokens and Kimi Linear 48B A3B Instruct costs $0.3/M input tokens. Kimi Linear 48B A3B Instruct is $9.70/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 5.1 and Kimi Linear 48B A3B Instruct on Rival?

This page shows a side-by-side comparison of Claude Fable 5.1 and Kimi Linear 48B A3B Instruct 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

Claude Fable 5.1vsKimi Linear 48B A3B Instruct

Kimi Linear 48B A3B Instruct is cheaper than Claude Fable 5.1 at $0.3/M vs $10/M input tokens.

Claude Fable 5.1 and Kimi Linear 48B A3B Instruct compared across 6 shared prompts
Spec	Claude Fable 5.1	Kimi Linear 48B A3B Instruct
Input price	$10/M tokens	$0.3/M tokens
Output price	$50/M tokens	$0.6/M tokens
Context window	1.0M tokens	1.0M tokens
Weights	Closed	Open
Free API (OpenRouter)	No	No
Released	Sep 2026	Nov 2025

Our Verdict

Claude Fable 5.1

Kimi Linear 48B A3B InstructRunner-up

Not enough votes to call it. On the specs, Claude Fable 5.1 has the edge: newer, major provider backing.

Kimi Linear 48B A3B Instruct costs 83x less per token.

Too close to call

Reviewing agent-written code?See a Brief PR report

API pricing

Cost per 1M tokens

Claude Fable 5.1

Input

$10.00

Output

$50.00

Kimi Linear 48B A3B Instruct

Input

$0.30

33× cheaper

Output

$0.60

83× cheaper

Kimi Linear 48B A3B Instruct is cheaper on both: 33× input, 83× output.

Where to run it

4 hosts

Claude Fable 5.14 hosts

HostInOutContextUptime

Amazon Bedrock$10.00 in$50.00 out1M—Anthropic$10.00 in$50.00 out1M99.1% up Azure AI Foundry$10.00 in$50.00 out1M99.1% up Google Vertex AI$10.00 in$50.00 out1M99.8% up

Kimi Linear 48B A3B Instruct

No hosts listed on OpenRouter.

Per million tokens. Prices and uptime via OpenRouter, checked 16 Sep 2026.

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

Cost per 1M tokens

4 hosts

What we learned reading every model

Common questions

What is the difference between Claude Fable 5.1 and Kimi Linear 48B A3B Instruct?

Which is better, Claude Fable 5.1 or Kimi Linear 48B A3B Instruct?

How much does Claude Fable 5.1 cost compared to Kimi Linear 48B A3B Instruct?

How can I compare Claude Fable 5.1 and Kimi Linear 48B A3B Instruct on Rival?

More comparisons

Against the newest arrivals

Same lab, same size, long tail

Model pages

Cost per 1M tokens

4 hosts

What we learned reading every model

Common questions

What is the difference between Claude Fable 5.1 and Kimi Linear 48B A3B Instruct?

Which is better, Claude Fable 5.1 or Kimi Linear 48B A3B Instruct?

How much does Claude Fable 5.1 cost compared to Kimi Linear 48B A3B Instruct?

How can I compare Claude Fable 5.1 and Kimi Linear 48B A3B Instruct on Rival?

More comparisons

Against the newest arrivals

Same lab, same size, long tail

Model pages