Claude Opus 5 vs Llama Guard 4 12B: side-by-side summary

Claude Opus 5 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 Opus 5, from Anthropic, has a 1,000,000-token context window and is priced at $5/M tokens input, $25/M tokens output on OpenRouter.

Llama Guard 4 12B, from Meta Llama, has a 1,048,576-token context window and is priced at $0.18/M tokens input, $0.18/M tokens output on OpenRouter.

Context window

• Claude Opus 5: 1,000,000 tokens
• Llama Guard 4 12B: 1,048,576 tokens

Price

• Claude Opus 5: $5/M tokens input, $25/M tokens output
• Llama Guard 4 12B: $0.18/M tokens input, $0.18/M tokens output

Provided by

• Claude Opus 5: Anthropic
• Llama Guard 4 12B: Meta Llama

• Claude Opus 5 model details, providers and pricing
• Llama Guard 4 12B model details, providers and pricing