GPT Audio Mini and Solar Pro 3 are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
GPT Audio Mini, from OpenAI, has a 128,000-token context window and is priced at $0.60/M tokens input, $2.40/M tokens output on OpenRouter.
Solar Pro 3, from upstage, has a 131,072-token context window and is priced at $0.15/M tokens input, $0.60/M tokens output on OpenRouter.