Compare Granite 4.2 8B from ibm-granite and GPT-6 Luna Pro from OpenAI on key metrics including benchmarks, price, context length, and other model features. Access both models and hundreds of others through the OpenRouter API.
Granite 4.2 8B and GPT-6 Luna Pro 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 $0.06/M tokens input, $0.25/M tokens output on OpenRouter.
GPT-6 Luna Pro, from OpenAI, has a 1,050,000-token context window and is priced at $0.10/M tokens input, $0.50/M tokens output on OpenRouter.