Claude Sonnet 4.5 vs Nano Banana (Gemini 2.5 Flash Image): side-by-side summary

Claude Sonnet 4.5 and Nano Banana (Gemini 2.5 Flash Image) are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

Claude Sonnet 4.5, from Anthropic, has a 1,000,000-token context window and is priced at $3/M tokens input, $15/M tokens output on OpenRouter.

Nano Banana (Gemini 2.5 Flash Image), from Google, has a 32,768-token context window and is priced at $0.30/M tokens input, $2.50/M tokens output on OpenRouter.

Context window

• Claude Sonnet 4.5: 1,000,000 tokens
• Nano Banana (Gemini 2.5 Flash Image): 32,768 tokens

Price

• Claude Sonnet 4.5: $3/M tokens input, $15/M tokens output
• Nano Banana (Gemini 2.5 Flash Image): $0.30/M tokens input, $2.50/M tokens output

Provided by

• Claude Sonnet 4.5: Anthropic
• Nano Banana (Gemini 2.5 Flash Image): Google

• Claude Sonnet 4.5 model details, providers and pricing
• Nano Banana (Gemini 2.5 Flash Image) model details, providers and pricing