Step 1: Note the context given in the question.
The Union Budget 2026-27 proposed a multilingual AI tool meant to connect the various AgriStack portals for farmers.
Step 2: Eliminate the generic sounding options.
Agri-AI Platform and Farm AI are not the actual names used in the Budget speech, and Bharat-KRISHI was never announced under this scheme.
Step 3: Recall the exact name used in the Budget.
The tool was named Bharat-VISTAAR, built to help farmers access agricultural information in their own language across AgriStack services.
\[ \boxed{\text{Bharat-VISTAAR}} \]