Gold prices firmed on Wednesday as the U.S. dollar and Treasury yields retreated, while market participants awaited U.S. inflation data for clues on the Federal Reserve's interest rate strategy. Spot gold gained 0.

The dollar fell to a one-week low as investors turned cautious ahead of U.S. inflation data later. U.S. inflation is expected to accelerate to 2.9% year over year in December but core inflation is seen unchanged at 3.

The Indian rupee is likely to open marginally higher on Wednesday as the dollar retreats in the lead up to U.S. inflation data that will give cues on the direction of U.S. interest rates. The 1-month non-deliverable forward indicated that the rupee will open at 86.