Claude Sonnet 4.5 vs Riverflow V2 Standard Preview: side-by-side summary

Claude Sonnet 4.5 and Riverflow V2 Standard Preview 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.

Riverflow V2 Standard Preview, from Sourceful, has a 8,192-token context window and is priced by the provider serving it on OpenRouter.

Context window

• Claude Sonnet 4.5: 1,000,000 tokens
• Riverflow V2 Standard Preview: 8,192 tokens

Price

• Claude Sonnet 4.5: $3/M tokens input, $15/M tokens output
• Riverflow V2 Standard Preview: Pricing varies by provider

Provided by

• Claude Sonnet 4.5: Anthropic
• Riverflow V2 Standard Preview: Sourceful

• Claude Sonnet 4.5 model details, providers and pricing
• Riverflow V2 Standard Preview model details, providers and pricing