diff --git a/.evergreen/generated_configs/tasks.yml b/.evergreen/generated_configs/tasks.yml
index 5083b456c5..eb5b49e6f2 100644
--- a/.evergreen/generated_configs/tasks.yml
+++ b/.evergreen/generated_configs/tasks.yml
@@ -134,7 +134,7 @@ tasks:
     commands:
       - func: download and merge coverage
     depends_on: [{ name: .server-version, variant: .coverage_tag, status: "*", patch_optional: true }]
-    tags: [coverage]
+    tags: [coverage, pr]
 
   # Free threading tests
   - name: test-free-threading
@@ -211,7 +211,7 @@ tasks:
           TEST_NAME: mod_wsgi
           SUB_TEST_NAME: standalone
           PYTHON_VERSION: "3.9"
-    tags: [mod_wsgi]
+    tags: [mod_wsgi, pr]
   - name: mod-wsgi-embedded-mode-replica-set-python3.10
     commands:
       - func: run server
@@ -223,7 +223,7 @@ tasks:
           TEST_NAME: mod_wsgi
           SUB_TEST_NAME: embedded
           PYTHON_VERSION: "3.10"
-    tags: [mod_wsgi]
+    tags: [mod_wsgi, pr]
   - name: mod-wsgi-replica-set-python3.11
     commands:
       - func: run server
@@ -235,7 +235,7 @@ tasks:
           TEST_NAME: mod_wsgi
           SUB_TEST_NAME: standalone
           PYTHON_VERSION: "3.11"
-    tags: [mod_wsgi]
+    tags: [mod_wsgi, pr]
   - name: mod-wsgi-embedded-mode-replica-set-python3.12
     commands:
       - func: run server
@@ -247,7 +247,7 @@ tasks:
           TEST_NAME: mod_wsgi
           SUB_TEST_NAME: embedded
           PYTHON_VERSION: "3.12"
-    tags: [mod_wsgi]
+    tags: [mod_wsgi, pr]
   - name: mod-wsgi-replica-set-python3.13
     commands:
       - func: run server
@@ -259,7 +259,7 @@ tasks:
           TEST_NAME: mod_wsgi
           SUB_TEST_NAME: standalone
           PYTHON_VERSION: "3.13"
-    tags: [mod_wsgi]
+    tags: [mod_wsgi, pr]
 
   # No orchestration tests
   - name: test-no-orchestration-python3.9
@@ -2490,6 +2490,7 @@ tasks:
       - python-3.9
       - standalone-noauth-nossl
       - sync
+      - pr
   - name: test-server-version-python3.10-async-noauth-nossl-standalone-cov
     commands:
       - func: run server
@@ -2511,6 +2512,7 @@ tasks:
       - python-3.10
       - standalone-noauth-nossl
       - async
+      - pr
   - name: test-server-version-python3.11-sync-auth-ssl-replica-set-cov
     commands:
       - func: run server
@@ -2656,6 +2658,7 @@ tasks:
       - python-3.11
       - replica_set-noauth-nossl
       - sync
+      - pr
   - name: test-server-version-python3.12-async-noauth-nossl-replica-set-cov
     commands:
       - func: run server
@@ -2677,6 +2680,7 @@ tasks:
       - python-3.12
       - replica_set-noauth-nossl
       - async
+      - pr
   - name: test-server-version-python3.13-sync-auth-ssl-sharded-cluster-cov
     commands:
       - func: run server
@@ -2698,6 +2702,7 @@ tasks:
       - python-3.13
       - sharded_cluster-auth-ssl
       - sync
+      - pr
   - name: test-server-version-pypy3.10-async-auth-ssl-sharded-cluster
     commands:
       - func: run server
@@ -2717,6 +2722,7 @@ tasks:
       - python-pypy3.10
       - sharded_cluster-auth-ssl
       - async
+      - pr
   - name: test-server-version-python3.9-sync-auth-nossl-sharded-cluster-cov
     commands:
       - func: run server
@@ -3611,6 +3617,7 @@ tasks:
       - python-3.13
       - standalone-noauth-nossl
       - sync
+      - pr
   - name: test-standard-latest-python3.9-async-noauth-ssl-replica-set
     commands:
       - func: run server
@@ -3633,6 +3640,7 @@ tasks:
       - python-3.9
       - replica_set-noauth-ssl
       - async
+      - pr
   - name: test-standard-latest-python3.10-sync-auth-ssl-sharded-cluster
     commands:
       - func: run server
@@ -3655,6 +3663,7 @@ tasks:
       - python-3.10
       - sharded_cluster-auth-ssl
       - sync
+      - pr
   - name: test-standard-v4.0-pypy3.10-sync-noauth-nossl-standalone
     commands:
       - func: run server
@@ -4389,6 +4398,7 @@ tasks:
       - python-3.13
       - standalone-noauth-nossl
       - noauth
+      - pr
   - name: test-non-standard-latest-python3.9-noauth-ssl-replica-set
     commands:
       - func: run server
@@ -4410,6 +4420,7 @@ tasks:
       - python-3.9
       - replica_set-noauth-ssl
       - noauth
+      - pr
   - name: test-non-standard-latest-python3.10-auth-ssl-sharded-cluster
     commands:
       - func: run server
@@ -4431,6 +4442,7 @@ tasks:
       - python-3.10
       - sharded_cluster-auth-ssl
       - auth
+      - pr
   - name: test-non-standard-v4.0-pypy3.10-noauth-nossl-standalone
     commands:
       - func: run server
diff --git a/.evergreen/scripts/generate_config.py b/.evergreen/scripts/generate_config.py
index e13976d8c7..c54fab6e64 100644
--- a/.evergreen/scripts/generate_config.py
+++ b/.evergreen/scripts/generate_config.py
@@ -553,8 +553,19 @@ def create_server_version_tasks():
             task_inputs.append(task_input)
 
     # Assemble the tasks.
+    seen = set()
     for topology, auth, ssl, sync, python in task_inputs:
-        tags = ["server-version", f"python-{python}", f"{topology}-{auth}-{ssl}", sync]
+        combo = f"{topology}-{auth}-{ssl}"
+        tags = ["server-version", f"python-{python}", combo, sync]
+        if combo in [
+            "standalone-noauth-nossl",
+            "replica_set-noauth-nossl",
+            "sharded_cluster-auth-ssl",
+        ]:
+            combo = f"{combo}-{sync}"
+            if combo not in seen:
+                seen.add(combo)
+                tags.append("pr")
         expansions = dict(AUTH=auth, SSL=ssl, TOPOLOGY=topology)
         if python not in PYPYS:
             expansions["COVERAGE"] = "1"
@@ -593,11 +604,12 @@ def create_test_non_standard_tasks():
     task_combos = []
     # For each version and topology, rotate through the CPythons.
     for (version, topology), python in zip_cycle(list(product(ALL_VERSIONS, TOPOLOGIES)), CPYTHONS):
-        task_combos.append((version, topology, python))
+        pr = version == "latest"
+        task_combos.append((version, topology, python, pr))
     # For each PyPy and topology, rotate through the the versions.
     for (python, topology), version in zip_cycle(list(product(PYPYS, TOPOLOGIES)), ALL_VERSIONS):
-        task_combos.append((version, topology, python))
-    for version, topology, python in task_combos:
+        task_combos.append((version, topology, python, False))
+    for version, topology, python, pr in task_combos:
         auth, ssl = get_standard_auth_ssl(topology)
         tags = [
             "test-non-standard",
@@ -608,6 +620,8 @@ def create_test_non_standard_tasks():
         ]
         if python in PYPYS:
             tags.append("pypy")
+        if pr:
+            tags.append("pr")
         expansions = dict(AUTH=auth, SSL=ssl, TOPOLOGY=topology, VERSION=version)
         name = get_task_name("test-non-standard", python=python, **expansions)
         server_func = FunctionCall(func="run server", vars=expansions)
@@ -626,14 +640,15 @@ def create_standard_tasks():
     for (version, topology), python, sync in zip_cycle(
         list(product(ALL_VERSIONS, TOPOLOGIES)), CPYTHONS, SYNCS
     ):
-        task_combos.append((version, topology, python, sync))
+        pr = version == "latest"
+        task_combos.append((version, topology, python, sync, pr))
     # For each PyPy and topology, rotate through the the versions and sync/async.
     for (python, topology), version, sync in zip_cycle(
         list(product(PYPYS, TOPOLOGIES)), ALL_VERSIONS, SYNCS
     ):
-        task_combos.append((version, topology, python, sync))
+        task_combos.append((version, topology, python, sync, False))
 
-    for version, topology, python, sync in task_combos:
+    for version, topology, python, sync, pr in task_combos:
         auth, ssl = get_standard_auth_ssl(topology)
         tags = [
             "test-standard",
@@ -644,6 +659,8 @@ def create_standard_tasks():
         ]
         if python in PYPYS:
             tags.append("pypy")
+        if pr:
+            tags.append("pr")
         expansions = dict(AUTH=auth, SSL=ssl, TOPOLOGY=topology, VERSION=version)
         name = get_task_name("test-standard", python=python, sync=sync, **expansions)
         server_func = FunctionCall(func="run server", vars=expansions)
@@ -758,7 +775,7 @@ def create_mod_wsgi_tasks():
         server_func = FunctionCall(func="run server", vars=server_vars)
         vars = dict(TEST_NAME="mod_wsgi", SUB_TEST_NAME=test.split("-")[0], PYTHON_VERSION=python)
         test_func = FunctionCall(func="run tests", vars=vars)
-        tags = ["mod_wsgi"]
+        tags = ["mod_wsgi", "pr"]
         commands = [server_func, test_func]
         tasks.append(EvgTask(name=task_name, tags=tags, commands=commands))
     return tasks
@@ -843,7 +860,7 @@ def create_getdata_tasks():
 
 
 def create_coverage_report_tasks():
-    tags = ["coverage"]
+    tags = ["coverage", "pr"]
     task_name = "coverage-report"
     # BUILD-3165: We can't use "*" (all tasks) and specify "variant".
     # Instead list out all coverage tasks using tags.