Overview
Claude Sonnet 5.5 vs DeepSeek V4.1 Flash: side-by-side summary
Claude Sonnet 5.5 and DeepSeek V4.1 Flash are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
Claude Sonnet 5.5, from Anthropic, has a 1,000,000-token context window and is priced at $2/M tokens input, $10/M tokens output on OpenRouter.
DeepSeek V4.1 Flash, from DeepSeek, has a 1,048,576-token context window and is priced at $0.05/M tokens input, $1.20/M tokens output on OpenRouter.
- Context window
- Claude Sonnet 5.5: 1,000,000 tokens
- DeepSeek V4.1 Flash: 1,048,576 tokens
- Price
- Claude Sonnet 5.5: $2/M tokens input, $10/M tokens output
- DeepSeek V4.1 Flash: $0.05/M tokens input, $1.20/M tokens output
- Provided by
- Claude Sonnet 5.5: Anthropic
- DeepSeek V4.1 Flash: DeepSeek