On blended cost, Anthropic: Claude Fable 5.1 ($20.00/M) is about 70% cheaper than OpenAI: GPT-5.5 Pro ($67.50/M) per 1M tokens. Anthropic: Claude Fable 5.1 wins on input price, Anthropic: Claude Fable 5.1 on output, and OpenAI: GPT-5.5 Pro has the larger context window.
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Frequently asked questions
- Is OpenAI: GPT-5.5 Pro or Anthropic: Claude Fable 5.1 cheaper?
- On a blended basis Anthropic: Claude Fable 5.1 is cheaper at $20.00/M per 1M tokens versus $67.50/M for OpenAI: GPT-5.5 Pro — about 70% less. Blended weights input 3:1 over output.
- OpenAI: GPT-5.5 Pro vs Anthropic: Claude Fable 5.1: input token cost?
- OpenAI: GPT-5.5 Pro charges $30.00/M per 1M input tokens; Anthropic: Claude Fable 5.1 charges $10.00/M. Anthropic: Claude Fable 5.1 is cheaper on input.
- OpenAI: GPT-5.5 Pro vs Anthropic: Claude Fable 5.1: output token cost?
- OpenAI: GPT-5.5 Pro charges $180/M per 1M output tokens; Anthropic: Claude Fable 5.1 charges $50.00/M. Anthropic: Claude Fable 5.1 is cheaper on output.
- Which has the larger context window, OpenAI: GPT-5.5 Pro or Anthropic: Claude Fable 5.1?
- OpenAI: GPT-5.5 Pro supports 1,050,000 tokens and Anthropic: Claude Fable 5.1 supports 1,000,000 tokens, so OpenAI: GPT-5.5 Pro handles longer inputs in a single call.
- How do I track OpenAI: GPT-5.5 Pro and Anthropic: Claude Fable 5.1 price changes?
- Token Price Index Pro ($9/mo) emails you the instant either model changes price, so a hike never catches you out.
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