ContextualAI/ctx-bird-reward-250121

ContextualAI/ctx-bird-reward-250121 is a 32.8 billion parameter reward model developed by Contextual AI, fine-tuned from Qwen-2.5-32B-Instruct with a 131072 token context length. It is specifically designed to score the execution correctness of candidate SQL queries given a database schema and natural language question. This model is a critical component of the Contextual-SQL system, which achieved the #1 ranking on the BIRD benchmark leaderboard, making it ideal for enhancing text-to-SQL system accuracy by selecting optimal SQL generations.