Claude Fable 5.1 vs Llama Guard 4 12B: side-by-side summary

Claude Fable 5.1 and Llama Guard 4 12B 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.

Llama Guard 4 12B, from Meta Llama, has a 163,840-token context window and is priced at $0.18/M tokens input, $0.18/M tokens output on OpenRouter.

Context window

• Claude Fable 5.1: 1,000,000 tokens
• Llama Guard 4 12B: 163,840 tokens

Price

• Claude Fable 5.1: $10/M tokens input, $50/M tokens output
• Llama Guard 4 12B: $0.18/M tokens input, $0.18/M tokens output

Provided by

• Claude Fable 5.1: Anthropic
• Llama Guard 4 12B: Meta Llama

• Claude Fable 5.1 model details, providers and pricing
• Llama Guard 4 12B model details, providers and pricing