Granite 4.2 8B vs Mercury 2.5 Preview: side-by-side summary

Granite 4.2 8B and Mercury 2.5 Preview are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

Granite 4.2 8B, from ibm-granite, has a 131,072-token context window and is priced at $0.10/M tokens input, $0.15/M tokens output on OpenRouter.

Mercury 2.5 Preview, from inception, has a 260,000-token context window and is priced at $0.04/M tokens input, $0.15/M tokens output on OpenRouter.

Context window

• Granite 4.2 8B: 131,072 tokens
• Mercury 2.5 Preview: 260,000 tokens

Price

• Granite 4.2 8B: $0.10/M tokens input, $0.15/M tokens output
• Mercury 2.5 Preview: $0.04/M tokens input, $0.15/M tokens output

Provided by

• Granite 4.2 8B: ibm-granite
• Mercury 2.5 Preview: inception

• Granite 4.2 8B model details, providers and pricing
• Mercury 2.5 Preview model details, providers and pricing