Overview
Nano Banana Pro (Gemini 3 Pro Image Preview) vs GPT-5.1-Codex-Mini: side-by-side summary
Nano Banana Pro (Gemini 3 Pro Image Preview) and GPT-5.1-Codex-Mini are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
Nano Banana Pro (Gemini 3 Pro Image Preview), from Google, has a 65,536-token context window and is priced at $2/M tokens input, $120/M tokens output on OpenRouter.
GPT-5.1-Codex-Mini, from OpenAI, has a 400,000-token context window and is priced at $0.25/M tokens input, $2/M tokens output on OpenRouter.
- Context window
- Nano Banana Pro (Gemini 3 Pro Image Preview): 65,536 tokens
- GPT-5.1-Codex-Mini: 400,000 tokens
- Price
- Nano Banana Pro (Gemini 3 Pro Image Preview): $2/M tokens input, $120/M tokens output
- GPT-5.1-Codex-Mini: $0.25/M tokens input, $2/M tokens output
- Provided by
- Nano Banana Pro (Gemini 3 Pro Image Preview): Google
- GPT-5.1-Codex-Mini: OpenAI