DeepSeek V3.1 and Relace Apply 3 are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
DeepSeek V3.1, from DeepSeek, has a 163,840-token context window and is priced at $0.25/M tokens input, $0.95/M tokens output on OpenRouter.
Relace Apply 3, from relace, has a 256,000-token context window and is priced at $0.85/M tokens input, $1.25/M tokens output on OpenRouter.