What is the difference between Claude Fable 5.1 and Qwen3.5 Plus 2026-02-15?

Claude Fable 5.1 is developed by Anthropic while Qwen3.5 Plus 2026-02-15 is developed by Qwen. Claude Fable 5.1 has a 1.0M token context window vs Qwen3.5 Plus 2026-02-15's 1.0M. 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 Qwen3.5 Plus 2026-02-15?

It depends on your use case. Claude Fable 5.1 and Qwen3.5 Plus 2026-02-15 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 Qwen3.5 Plus 2026-02-15?

Claude Fable 5.1 costs $10/M input tokens and Qwen3.5 Plus 2026-02-15 costs $0.4/M input tokens. Qwen3.5 Plus 2026-02-15 is $9.60/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 Qwen3.5 Plus 2026-02-15 on Rival?

This page shows a side-by-side comparison of Claude Fable 5.1 and Qwen3.5 Plus 2026-02-15 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 5.1vsQwen3.5 Plus 2026-02-15

Qwen3.5 Plus 2026-02-15 is cheaper than Claude Fable 5.1 at $0.4/M vs $10/M input tokens.

Claude Fable 5.1 and Qwen3.5 Plus 2026-02-15 compared across 10 shared prompts
Spec	Claude Fable 5.1	Qwen3.5 Plus 2026-02-15
Input price	$10/M tokens	$0.4/M tokens
Output price	$50/M tokens	$2.4/M tokens
Context window	1.0M tokens	1.0M tokens
Weights	Closed	Closed
Free API (OpenRouter)	No	No
Released	Sep 2026	Feb 2026

Our Verdict

Claude Fable 5.1

Qwen3.5 Plus 2026-02-15Runner-up

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

Qwen3.5 Plus 2026-02-15 costs 21x 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

Qwen3.5 Plus 2026-02-15

Input

$0.40

25× cheaper

Output

$2.40

21× cheaper

Qwen3.5 Plus 2026-02-15 is cheaper on both: 25× input, 21× output.

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 out1M99.7% up Azure AI Foundry$10.00 in$50.00 out1M99.7% up Google Vertex AI$10.00 in$50.00 out1M99.7% up

Qwen3.5 Plus 2026-02-151 host

HostInOutContextUptime

Alibaba Cloud$0.26 in$1.56 out1M100% 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 Qwen3.5 Plus 2026-02-15?

Which is better, Claude Fable 5.1 or Qwen3.5 Plus 2026-02-15?

How much does Claude Fable 5.1 cost compared to Qwen3.5 Plus 2026-02-15?

How can I compare Claude Fable 5.1 and Qwen3.5 Plus 2026-02-15 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 Qwen3.5 Plus 2026-02-15?

Which is better, Claude Fable 5.1 or Qwen3.5 Plus 2026-02-15?

How much does Claude Fable 5.1 cost compared to Qwen3.5 Plus 2026-02-15?

How can I compare Claude Fable 5.1 and Qwen3.5 Plus 2026-02-15 on Rival?

More comparisons

Against the newest arrivals

Same lab, same size, long tail

Model pages