What is the difference between Claude Fable 5.1 and GLM 4.7?

Claude Fable 5.1 is developed by Anthropic while GLM 4.7 is developed by OpenRouter. 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 GLM 4.7?

It depends on your use case. Claude Fable 5.1 and GLM 4.7 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 can I compare Claude Fable 5.1 and GLM 4.7 on Rival?

This page shows a side-by-side comparison of Claude Fable 5.1 and GLM 4.7 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 5.1vsGLM 4.7

Claude Fable 5.1 is the newer model, released after GLM 4.7.

Claude Fable 5.1 and GLM 4.7 compared across 10 shared prompts
Spec	Claude Fable 5.1	GLM 4.7
Input price	$10/M tokens	—
Output price	$50/M tokens	—
Context window	1.0M tokens	—
Weights	Closed	Open
Free API (OpenRouter)	No	No
Released	Sep 2026	Dec 2025

Our Verdict

Claude Fable 5.1

GLM 4.7Runner-up

Not enough votes to call it. On the specs, Claude Fable 5.1 has the edge: bigger model tier, newer, 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

GLM 4.7

Input

—

Output

—

Where to run it

11 hosts, cheapest first

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

GLM 4.77 hosts

HostInOutContextUptime

DeepInfrafp4$0.40 in$1.75 out203k97.3% up Venicefp4$0.40 in$1.93 out198k93.9% up Google Vertex AI$0.60 in$2.20 out200k100% up Mancerfp4$0.70 in$2.50 out131k91.8% up AtlasCloudfp8degraded$0.52 in$1.85 out203k93.1% up Novitafp8degraded$0.54 in$1.98 out205k94% up

1 more host

Z.aifp4degraded$0.60 in$2.20 out203k83.3% up

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

Research

What we learned reading every model

FAQ

Common questions

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More comparisons

Cost per 1M tokens

11 hosts, cheapest first

What we learned reading every model

Common questions

What is the difference between Claude Fable 5.1 and GLM 4.7?

Which is better, Claude Fable 5.1 or GLM 4.7?

How can I compare Claude Fable 5.1 and GLM 4.7 on Rival?

More comparisons

Against the newest arrivals

Same lab, same size, long tail

Model pages

Cost per 1M tokens

11 hosts, cheapest first

What we learned reading every model

Common questions

What is the difference between Claude Fable 5.1 and GLM 4.7?

Which is better, Claude Fable 5.1 or GLM 4.7?

How can I compare Claude Fable 5.1 and GLM 4.7 on Rival?

More comparisons

Against the newest arrivals

Same lab, same size, long tail

Model pages