DeepSeek V4 Pro 0813 and Qwen3.8 Max (0902) are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
DeepSeek V4 Pro 0813, from DeepSeek, has a 1,048,576-token context window and is priced at $0.66/M tokens input, $1.98/M tokens output on OpenRouter.
Qwen3.8 Max (0902), from Qwen, has a 1,000,000-token context window and is priced at $2/M tokens input, $6/M tokens output on OpenRouter.