What is the difference between Claude Fable 5.1 and Gemini Pro 1.0?

Claude Fable 5.1 is developed by Anthropic while Gemini Pro 1.0 is developed by Google AI. Claude Fable 5.1 has a 1.0M token context window vs Gemini Pro 1.0's 33K. You can compare their actual outputs across 2 challenges on Rival to see how they differ in practice.

Which is better, Claude Fable 5.1 or Gemini Pro 1.0?

It depends on your use case. Claude Fable 5.1 and Gemini Pro 1.0 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 2 challenges so you can judge which fits your needs best.

How much does Claude Fable 5.1 cost compared to Gemini Pro 1.0?

Claude Fable 5.1 costs $10/M input tokens and Gemini Pro 1.0 costs $0.5/M input tokens. Gemini Pro 1.0 is $9.50/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 Gemini Pro 1.0 on Rival?

This page shows a side-by-side comparison of Claude Fable 5.1 and Gemini Pro 1.0 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 5.1vsGemini Pro 1.0

Gemini Pro 1.0 is cheaper than Claude Fable 5.1 at $0.5/M vs $10/M input tokens.

Claude Fable 5.1 and Gemini Pro 1.0 compared across 2 shared prompts
Spec	Claude Fable 5.1	Gemini Pro 1.0
Input price	$10/M tokens	$0.5/M tokens
Output price	$50/M tokens	$1.5/M tokens
Context window	1.0M tokens	33K tokens
Weights	Closed	—
Free API (OpenRouter)	No	No
Released	Sep 2026	Dec 2023