Nano Banana Pro (Gemini 3 Pro Image Preview) vs gpt-oss-safeguard-20b: side-by-side summary

Nano Banana Pro (Gemini 3 Pro Image Preview) and gpt-oss-safeguard-20b 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, $12/M tokens output on OpenRouter.

gpt-oss-safeguard-20b, from OpenAI, has a 131,072-token context window and is priced at $0.075/M tokens input, $0.30/M tokens output on OpenRouter.

Context window

• Nano Banana Pro (Gemini 3 Pro Image Preview): 65,536 tokens
• gpt-oss-safeguard-20b: 131,072 tokens

Price

• Nano Banana Pro (Gemini 3 Pro Image Preview): $2/M tokens input, $12/M tokens output
• gpt-oss-safeguard-20b: $0.075/M tokens input, $0.30/M tokens output

Provided by

• Nano Banana Pro (Gemini 3 Pro Image Preview): Google
• gpt-oss-safeguard-20b: OpenAI

• Nano Banana Pro (Gemini 3 Pro Image Preview) model details, providers and pricing
• gpt-oss-safeguard-20b model details, providers and pricing