Gemini 3.7 Flash vs Claude Fable 5: side-by-side summary

Gemini 3.7 Flash and Claude Fable 5 are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

Gemini 3.7 Flash, from Google, has a 1,048,576-token context window and is priced at $0.375/M tokens input, $1.875/M tokens output on OpenRouter.

Claude Fable 5, from Anthropic, has a 1,000,000-token context window and is priced at $10/M tokens input, $50/M tokens output on OpenRouter.

Context window

• Gemini 3.7 Flash: 1,048,576 tokens
• Claude Fable 5: 1,000,000 tokens

Price

• Gemini 3.7 Flash: $0.375/M tokens input, $1.875/M tokens output
• Claude Fable 5: $10/M tokens input, $50/M tokens output

Provided by

• Gemini 3.7 Flash: Google
• Claude Fable 5: Anthropic

• Gemini 3.7 Flash model details, providers and pricing
• Claude Fable 5 model details, providers and pricing