Step 3.7 Flash vs Grok 4.5: side-by-side summary

Step 3.7 Flash and Grok 4.5 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.

Grok 4.5, from SpaceXAI, has a 500,000-token context window and is priced at $2/M tokens input, $6/M tokens output on OpenRouter.

Context window

• Step 3.7 Flash: 262,144 tokens
• Grok 4.5: 500,000 tokens

Price

• Step 3.7 Flash: $0.20/M tokens input, $1.15/M tokens output
• Grok 4.5: $2/M tokens input, $6/M tokens output

Provided by

• Step 3.7 Flash: stepfun
• Grok 4.5: SpaceXAI

• Step 3.7 Flash model details, providers and pricing
• Grok 4.5 model details, providers and pricing