Compare Claude Sonnet 4.5 from Anthropic and Riverflow V2 Max Preview from Sourceful on key metrics including benchmarks, price, context length, and other model features. Access both models and hundreds of others through the OpenRouter API.
Claude Sonnet 4.5 and Riverflow V2 Max 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 Max Preview, from Sourceful, has a 8,192-token context window and is priced by the provider serving it on OpenRouter.