por lo que yo sé

as far as I know

→ por
phrase Rare #34,353
as far as I know Introduces information that is based on the speaker’s knowledge and may not be completely certain. The pronoun yo can be omitted: por lo que sé.
SP: Por lo que yo sé, el restaurante está cerrado los domingos.
EN: As far as I know, the restaurant is closed on Sundays.

Por lo que yo sé, es honesto.

As far as I know, he's honest.

Por lo que yo sé, él no va a venir.

As far as I know, he's not coming.

Por lo que yo sé, no hubo problemas en el primer semestre.

As far as I know, there were no problems in the first semester.

Por lo que yo sé, Tom sigue casado.

As far as I know, Tom is still married.

Por lo que yo sé, él es una persona que mantiene su promesa.

As far as I know, he is a person who keeps his promises.

Por lo que yo sé, está muy lejos.

As far as I know, it's very far away.

Por lo que yo sé, él nunca ha llegado a tiempo.

As far as I know, he has never been on time.

Por lo que yo sé, .

As far as I know, yes.

— Oppenheimer (2023)