For a formal, collaborative partnership:
* Joint precision: This emphasizes the shared commitment to accuracy.
* Collaborative verification: This highlights the process of checking and confirming accuracy together.
* Mutual validation: This emphasizes the shared responsibility for ensuring accuracy.
For a more informal, casual partnership:
* Truthful teamwork: This conveys a sense of working together towards the truth.
* Accurate alliance: This emphasizes the common goal of achieving accuracy.
* Reliable collaboration: This highlights the dependability and trust associated with the partnership.
Ultimately, the best word to use depends on the specific context and the nuances you want to convey.