Two leading GLP-1 therapies for obesity and type 2 diabetes

Semaglutide vs tirzepatide: trial pipelines compared

A side-by-side view of the semaglutide and tirzepatide clinical trial pipelines, built from live ClinicalTrials.gov data and refreshed daily. ClinicalTrials.gov lists 16+ phase 2–4 trials for semaglutide and 16+ for tirzepatide. Add up to three more drugs to widen the comparison.

semaglutide (16) vs tirzepatide (16)11 active2013–2030
semaglutidetirzepatide
Key
Actual date
Anticipated
Forecast to primary completion
RecruitingActive, not recruitingNot yet recruitingCompletedUnknown status
'13
'15
'17
'19
'21
'23
'25
'27
'29
semaglutide
SUSTAIN™ 2P3
SUSTAIN™1P3
PIONEER 1P3
SUSTAIN 10P3
SUSTAINP3
STEP 1P3
STEP 3P3
STEP 8P3
PIONEER PLUSP3
SEMPATICOP2
ASSETP2
ACHIEVE-3P3
A Research Study to See How Well Different Doses of CagriSema Help People With Excess Body Weight Lose WeightP3
Efficacy and Safety of Semaglutide for Weight Loss in Overweight or Obese Adults in Bangladesh With or Without Type 2 Diabetes MellitusP3
A Study Comparing the Efficacy and Safety of HRS9531 Injection With Semaglutide Injection in Subjects With ObesityP3
Efficacy and Safety of QLG1091 vs Rybelsus as add-on to Metformin in Subjects With Type 2 DiabetesP3
tirzepatide
SURPASS-4P3
SYNERGY-NASHP2
SURMOUNT-3P3
SURMOUNT-CNP3
SURPASS-CN-INSP3
A Study of Tirzepatide (LY3298176) in Chinese Participants With Type 2 Diabetes (SURPASS-CN-MONO)P3
A Study of Tirzepatide (LY3298176) Plus Mibavademab Compared With Tirzepatide Alone in Adult Participants With ObesityP2
T-RAMP4
STOP KNEE-OAP4
Efficacy and Safety of GZR18 Every 2 Weeks Versus Tirzepatide and Placebo in Obese or Overweight ParticipantsP2
SURPASS-T1D-1P3
Weekly GLP-1 Receptor Agonists in Obese Individuals Without DiabetesP3
Multi-Site Trial of Tirzepatide for Smoking CessationP2
AI-LIFE-T2D-OBP4
Safety and Efficacy of NA-931 and Tirzepatide in Adults Who Are Overweight or ObeseP2
TOPAZP2

Upcoming readouts

8 ahead · 2 drugs

Select a trial to load its full ClinicalTrials.gov record.

Head to head

Registered phase 2–4 trial activity for each drug, computed from live ClinicalTrials.gov data.

semaglutide (Ozempic / Wegovy)GLP-1 & incretin therapies
16+

Major trials tracked

14

Phase 3 trials

1

Actively recruiting

Dec 2026

Next phase 3 readout

tirzepatide (Mounjaro / Zepbound)GLP-1 & incretin therapies
16+

Major trials tracked

7

Phase 3 trials

1

Actively recruiting

Nov 2026

Next phase 3 readout

Key trials across both drugs

Top 16 registered phase 2–4 trials across semaglutide and tirzepatide, ordered by phase and status. Trial names open the full ComplyRx trial page; NCT ids link to ClinicalTrials.gov.

DrugTrialTitlePhaseStatusPrimary completion
tirzepatideNCT06191848STOP KNEE-OA: Subcutaneous Tirzepatide Once-weekly in Patients With Obesity and Knee Osteoarthritis (STOP KNEE…Phase 4Active, not recruitingMay 2027
tirzepatideNCT07697391AI-LIFE-T2D-OB: AI-Assisted Lifestyle Intervention Versus Tirzepatide for Obesity and Newly Diagnosed Type 2 Dia…Phase 4Not yet recruitingOct 2027
tirzepatideNCT06635057T-RAM: A Study of Tirzepatide (LY3298176) in Participants With Type 2 Diabetes During RamadanPhase 4CompletedApr 2026
semaglutideNCT06616961Efficacy and Safety of Semaglutide for Weight Loss in Overweight or Obese Adults in Bangladesh W…Phase 3Not yet recruitingFeb 2025
tirzepatideNCT06914895SURPASS-T1D-1: A Study of Tirzepatide (LY3298176) Compared With Placebo in Adults With Type 1 Diabetes and Obes…Phase 3Active, not recruitingNov 2026
semaglutideNCT07487103Efficacy and Safety of QLG1091 vs Rybelsus as add-on to Metformin in Subjects With Type 2 Diabet…Phase 3Not yet recruitingDec 2026
semaglutideNCT07285902A Study Comparing the Efficacy and Safety of HRS9531 Injection With Semaglutide Injection in Sub…Phase 3Active, not recruitingMar 2027
semaglutideNCT02054897SUSTAIN™1: Efficacy and Safety of Semaglutide Once-weekly Versus Placebo in Drug-naïve Subjects With Type 2…Phase 3CompletedMay 2015
semaglutideNCT01930188SUSTAIN™ 2: Efficacy and Safety of Semaglutide Once-weekly Versus Sitagliptin Once-daily as add-on to Metfor…Phase 3CompletedOct 2015
semaglutideNCT02906930PIONEER 1: Efficacy and Safety of Oral Semaglutide Versus Placebo in Subjects With Type 2 Diabetes Mellitus…Phase 3CompletedOct 2017
semaglutideNCT03191396SUSTAIN 10: Research Study Comparing a New Medicine Semaglutide to Liraglutide in People With Type 2 Diabete…Phase 3CompletedJul 2018
semaglutideNCT03061214SUSTAIN: Efficacy and Safety of Semaglutide Once-weekly Versus Sitagliptin Once-daily as add-on to Metfor…Phase 3CompletedMar 2019
semaglutideNCT03611582STEP 3: Research Study to Look at How Well Semaglutide is at Lowering Weight When Taken Together With an…Phase 3CompletedMar 2020
semaglutideNCT03548935STEP 1: STEP 1: Research Study Investigating How Well Semaglutide Works in People Suffering From Overwei…Phase 3CompletedMar 2020
tirzepatideNCT03730662SURPASS-4: A Study of Tirzepatide (LY3298176) Once a Week Versus Insulin Glargine Once a Day in Participant…Phase 3CompletedJan 2021
semaglutideNCT04074161STEP 8: Research Study to Investigate How Well Semaglutide Works Compared to Liraglutide in People Livin…Phase 3CompletedMar 2021

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FAQ

How do the semaglutide and tirzepatide clinical pipelines compare?
ClinicalTrials.gov currently lists 16+ phase 2–4 trials for semaglutide and 16+ for tirzepatide. The timeline above plots both side by side and refreshes daily.
Where does this data come from?
All trial data is sourced from ClinicalTrials.gov (CTGov) and refreshed on this page daily. ComplyRx does not add efficacy or superiority claims; the comparison shows registered trial activity only.
Can I add more drugs to the comparison?
Yes. The tool above compares up to five drugs on one timeline, with PNG and PDF export. Add any competitor in the search box.

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