Overview
GPT-5.6 Luna vs Gemini 3 Flash Preview vs Gemini 3.6 Flash: side-by-side summary
GPT-5.6 Luna, Gemini 3 Flash Preview, and Gemini 3.6 Flash are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
GPT-5.6 Luna, from OpenAI, has a 1,050,000-token context window and is priced at $0.20/M tokens input, $1.20/M tokens output on OpenRouter.
Gemini 3 Flash Preview, from Google, has a 1,048,576-token context window and is priced at $0.50/M tokens input, $3/M tokens output on OpenRouter.
Gemini 3.6 Flash, from Google, has a 1,048,576-token context window and is priced at $0.75/M tokens input, $3.75/M tokens output on OpenRouter.
- Context window
- GPT-5.6 Luna: 1,050,000 tokens
- Gemini 3 Flash Preview: 1,048,576 tokens
- Gemini 3.6 Flash: 1,048,576 tokens
- Price
- GPT-5.6 Luna: $0.20/M tokens input, $1.20/M tokens output
- Gemini 3 Flash Preview: $0.50/M tokens input, $3/M tokens output
- Gemini 3.6 Flash: $0.75/M tokens input, $3.75/M tokens output
- Provided by
- GPT-5.6 Luna: OpenAI
- Gemini 3 Flash Preview: Google
- Gemini 3.6 Flash: Google