Skip to content
  • Models
  • Rankings
  • Ori
Sign Up
Sign Up
OpenRouterOpenRouter
© 2026 OpenRouter, Inc

Product

  • Chat
  • Rankings
  • Benchmarks
  • Apps
  • Discover
  • Models
  • Collections
  • Providers
  • Pricing
  • Business
  • Enterprise
  • Labs

Company

  • About
  • Blog
  • Careers
    Hiring
  • Privacy
  • Terms of Service
  • Trust Center
  • Support
  • Works With OR
  • Data
  • Brand

Developer

  • Documentation
  • API Reference
  • Developer Platform
  • Status

Connect

  • Discord
  • GitHub
  • LinkedIn
  • X
  • YouTube
  1. Home
  2. /
  3. Compare

Claude Fable 5.1 vs Sonar Pro Search

Compare Claude Fable 5.1 from Anthropic and Sonar Pro Search from Perplexity on key metrics including benchmarks, price, context length, and other model features. Access both models and hundreds of others through the OpenRouter API.

Favicon for anthropic
Claude Fable 5.1
Favicon for perplexity
Sonar Pro Search
Favicon for anthropic
Claude Fable 5.1
Favicon for perplexity
Sonar Pro Search

Overview

Claude Fable 5.1
Author
Anthropic
Sonar Pro Search
Author
Perplexity
Claude Fable 5.1
Context length
1Mtokens
Sonar Pro Search
Context length
200Ktokens
Claude Fable 5.1
Reasoning
Sonar Pro Search
Reasoning
Claude Fable 5.1
Input modalities
Sonar Pro Search
Input modalities
Claude Fable 5.1
Output modalities
Sonar Pro Search
Output modalities

Claude Fable 5.1 vs Sonar Pro Search: side-by-side summary

Claude Fable 5.1 and Sonar Pro Search are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

Claude Fable 5.1, from Anthropic, has a 1,000,000-token context window and is priced at $10/M tokens input, $50/M tokens output on OpenRouter.

Sonar Pro Search, from Perplexity, has a 200,000-token context window and is priced at $3/M tokens input, $15/M tokens output on OpenRouter.

Context window
  • Claude Fable 5.1: 1,000,000 tokens
  • Sonar Pro Search: 200,000 tokens
Price
  • Claude Fable 5.1: $10/M tokens input, $50/M tokens output
  • Sonar Pro Search: $3/M tokens input, $15/M tokens output
Provided by
  • Claude Fable 5.1: Anthropic
  • Sonar Pro Search: Perplexity
  • model details, providers and pricing
Claude Fable 5.1
model details, providers and pricing
Sonar Pro Search