Claude Opus 5 (Fast) vs Nano Banana Pro (Gemini 3 Pro Image): side-by-side summary

Claude Opus 5 (Fast) and Nano Banana Pro (Gemini 3 Pro Image) are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

Claude Opus 5 (Fast), from Anthropic, has a 1,000,000-token context window and is priced at $10/M tokens input, $50/M tokens output on OpenRouter.

Nano Banana Pro (Gemini 3 Pro Image), from Google, has a 131,072-token context window and is priced at $2/M tokens input, $12/M tokens output on OpenRouter.

Context window

• Claude Opus 5 (Fast): 1,000,000 tokens
• Nano Banana Pro (Gemini 3 Pro Image): 131,072 tokens

Price

• Claude Opus 5 (Fast): $10/M tokens input, $50/M tokens output
• Nano Banana Pro (Gemini 3 Pro Image): $2/M tokens input, $12/M tokens output

Provided by

• Claude Opus 5 (Fast): Anthropic
• Nano Banana Pro (Gemini 3 Pro Image): Google

• Claude Opus 5 (Fast) model details, providers and pricing
• Nano Banana Pro (Gemini 3 Pro Image) model details, providers and pricing