Yes, your Tinder Gold status is not visible to other users on the app, including those you have matched with. Even if they do not have Tinder Gold themselves, they cannot see that you have a Tinder Gold subscription.
Here is some information regarding Tinder Gold visibility:
Tinder Gold Features: Tinder Gold provides various features like unlimited likes, a free Boost per month, the Passport feature, five free Super Likes daily, the ability to rewind swipes, hide age and distance, use 10 Top Picks per day, and the "Likes You" feature [1].
Visibility of Tinder Gold: The little gold heart that indicates a like on the "Likes You" page is only visible on your version of the app and not to the other person [1]. Consequently, other users cannot see your Tinder Gold status.
Indirect Means: While direct visibility of your Tinder Gold status is restricted to you, someone might be able to infer that you have Tinder Gold or Tinder Plus through indirect means. For instance, if you utilize the Passport feature to match with someone in another city, they might deduce your premium subscription status [1].
To summarize, individuals you have matched with on Tinder cannot see your Tinder Gold status, regardless of their own subscription status. Nonetheless, it's advisable to exercise caution when using certain features to avoid indirectly revealing your premium subscription.
For further details, you can refer to the following resources: