This is a series of models designed to replicate the prose quality of the Claude 3 models, specifically Sonnet(https://openrouter.ai/anthropic/claude-3.5-sonnet(opens in new tab)) and Opus(https://openrouter.ai/anthropic/claude-3-opus(opens in new tab)).
The model is fine-tuned on top of Qwen2.5 72B(opens in new tab).