Compare Phi 4 from Microsoft and GPT-6 Luna 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.
Phi 4 and GPT-6 Luna are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
Phi 4, from Microsoft, has a 16,384-token context window and is priced at $0.07/M tokens input, $0.14/M tokens output on OpenRouter.
GPT-6 Luna, 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.