DeepSeek V3.1 Terminus and Qwen3 Coder Plus are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
DeepSeek V3.1 Terminus, from DeepSeek, has a 163,840-token context window and is priced at $0.27/M tokens input, $1/M tokens output on OpenRouter.
Qwen3 Coder Plus, from Qwen, has a 1,000,000-token context window and is priced at $0.65/M tokens input, $3.25/M tokens output on OpenRouter.