What is the difference between Claude Fable 5.1 and Dots3-Note Preview?

Claude Fable 5.1 is developed by Anthropic while Dots3-Note Preview is developed by Dots Studio. Claude Fable 5.1 has a 1.0M token context window vs Dots3-Note Preview's 512K. You can compare their actual outputs across 10 challenges on Rival to see how they differ in practice.

Which is better, Claude Fable 5.1 or Dots3-Note Preview?

It depends on your use case. Claude Fable 5.1 and Dots3-Note Preview each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 10 challenges so you can judge which fits your needs best.

How much does Claude Fable 5.1 cost compared to Dots3-Note Preview?

Claude Fable 5.1 costs $10/M input tokens and Dots3-Note Preview costs $0/M input tokens. Dots3-Note Preview is $10.00/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 Dots3-Note Preview on Rival?

This page shows a side-by-side comparison of Claude Fable 5.1 and Dots3-Note 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

Claude Fable 5.1vsDots3-Note Preview

Dots3-Note Preview is cheaper than Claude Fable 5.1 at $0/M vs $10/M input tokens.

Claude Fable 5.1 and Dots3-Note Preview compared across 10 shared prompts
Spec	Claude Fable 5.1	Dots3-Note Preview
Input price	$10/M tokens	Free
Output price	$50/M tokens	Free
Context window	1.0M tokens	512K tokens
Weights	Closed	—
Free API (OpenRouter)	No	Yes (1 provider)
Released	Sep 2026	Aug 2026

Our Verdict

Claude Fable 5.1

Dots3-Note PreviewRunner-up

Not enough votes to call it. On the specs, Claude Fable 5.1 has the edge: bigger model tier, bigger context window, major provider backing.

Slight edge

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

Dots3-Note Preview

Input

$0.000

Output

$0.000

Where to run it

5 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

Dots3-Note Preview1 host

HostInOutContextUptime

AtlasCloudfp8$0 in$0 out512k100% up

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

5 hosts

What we learned reading every model

Common questions

What is the difference between Claude Fable 5.1 and Dots3-Note Preview?

Which is better, Claude Fable 5.1 or Dots3-Note Preview?

How much does Claude Fable 5.1 cost compared to Dots3-Note Preview?

How can I compare Claude Fable 5.1 and Dots3-Note Preview on Rival?

More comparisons

Against the newest arrivals

Same lab, same size, long tail

Model pages

Cost per 1M tokens

5 hosts

What we learned reading every model

Common questions

What is the difference between Claude Fable 5.1 and Dots3-Note Preview?

Which is better, Claude Fable 5.1 or Dots3-Note Preview?

How much does Claude Fable 5.1 cost compared to Dots3-Note Preview?

How can I compare Claude Fable 5.1 and Dots3-Note Preview on Rival?

More comparisons

Against the newest arrivals

Same lab, same size, long tail

Model pages