A Study of Talquetamab and Teclistamab Each in Combination With a Programmed Cell Death Receptor-1 (PD-1) Inhibitor for the Treatment of Participants With Relapsed or Refractory Multiple Myeloma

Inclusion Criteria: * Have documented initial diagnosis of multiple myeloma according to International Myeloma Working Group (IMWG) diagnostic criteria * Participants with relapsed or refractory disease that are not a candidate for available therapy with established clinical benefit * Have measurable disease at screening as defined by at least 1 of the following: a) Serum M-protein level greater than or equal to (\>=) 0.5 grams per deciliter (g/dL); b) Urine M-protein level \>= 200 milligrams (mg) per 24 hours; c) Light chain multiple myeloma: Serum immunoglobulin (Ig) free light chain (FLC) \>= 10 milligrams/deciliter (mg/dL) and abnormal serum Ig kappa lambda FLC ratio * Have an Eastern Cooperative Oncology Group (ECOG) performance status score of 0 or 1 Exclusion Criteria: * Prior antitumor therapy within 21 days prior to the first dose of study treatment (proteasome inhibitor \[PI\] therapy or radiotherapy within 14 days, immunomodulatory drug (IMiD) agent therapy within 7 days, gene -modified adoptive cell therapy or autologous stem cell transplant within 3 months) * Prior therapy with PD-1 inhibitors, allogeneic stem cell transplant or solid organ transplant * Active plasma cell leukemia, Waldenstrom's macroglobulinemia, POEMS syndrome (polyneuropathy, organomegaly, endocrinopathy, M-protein, and skin changes), or primary light chain amyloidosis * Active Central Nervous System (CNS) involvement or exhibition of clinical signs of meningeal involvement of multiple myel…