Step 3.7 Flash vs Gemini 3.5 Flash: side-by-side summary

Step 3.7 Flash and Gemini 3.5 Flash are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

Step 3.7 Flash, from stepfun, has a 262,144-token context window and is priced at $0.20/M tokens input, $1.15/M tokens output on OpenRouter.

Gemini 3.5 Flash, from Google, has a 1,048,576-token context window and is priced at $1.50/M tokens input, $9/M tokens output on OpenRouter.

Context window

• Step 3.7 Flash: 262,144 tokens
• Gemini 3.5 Flash: 1,048,576 tokens

Price

• Step 3.7 Flash: $0.20/M tokens input, $1.15/M tokens output
• Gemini 3.5 Flash: $1.50/M tokens input, $9/M tokens output

Provided by

• Step 3.7 Flash: stepfun
• Gemini 3.5 Flash: Google

• Step 3.7 Flash model details, providers and pricing
• Gemini 3.5 Flash model details, providers and pricing