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  1. Home
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  3. Compare

Claude Fable 5.1 vs GPT-6 Luna

Compare Claude Fable 5.1 from Anthropic and GPT-6 Luna from OpenAI 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 openai
GPT-6 Luna
Favicon for anthropic
Claude Fable 5.1
Favicon for openai
GPT-6 Luna

Overview

Claude Fable 5.1
Author
Anthropic
GPT-6 Luna
Author
OpenAI
Claude Fable 5.1
Context length
1Mtokens
GPT-6 Luna
Context length
1.05Mtokens
Claude Fable 5.1
Reasoning
GPT-6 Luna
Reasoning
Claude Fable 5.1
Input modalities
GPT-6 Luna
Input modalities
Claude Fable 5.1
Output modalities
GPT-6 Luna
Output modalities

Claude Fable 5.1 vs GPT-6 Luna: side-by-side summary

Claude Fable 5.1 and GPT-6 Luna 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.

GPT-6 Luna, from OpenAI, has a 1,050,000-token context window and is priced at $0.10/M tokens input, $0.50/M tokens output on OpenRouter.

Context window
  • Claude Fable 5.1: 1,000,000 tokens
  • GPT-6 Luna: 1,050,000 tokens
Price
  • Claude Fable 5.1: $10/M tokens input, $50/M tokens output
  • GPT-6 Luna: $0.10/M tokens input, $0.50/M tokens output
Provided by
  • Claude Fable 5.1: Anthropic
  • GPT-6 Luna: OpenAI
  • Claude Fable 5.1 model details, providers and pricing
  • GPT-6 Luna model details, providers and pricing