diff --git a/benchmarks/k8s/collect_failed_inputs.py b/benchmarks/k8s/collect_failed_inputs.py
new file mode 100644
index 0000000..1bd13e5
--- /dev/null
+++ b/benchmarks/k8s/collect_failed_inputs.py
@@ -0,0 +1,52 @@
+"""Queries the Argo Workflows API and collects inputs for failed nodes matching a given template name and group ID.
+We need this because Argo will not respect parallelism in retries, so we spin the retry as a new workflow."""
+
+import sys
+from typing import Dict, Any
+
+import requests
+import json
+
+from benchmarks.k8s.parameter_expander import normalize_argo_params
+
+
+def collect_failed_inputs(group_id: str, template: str, workflows: Dict[str, Any]):
+    def _belongs_to_group(pars):
+        for parameter in pars:
+            if (
+                parameter.get("name") == "groupId"
+                and parameter.get("value") == group_id
+            ):
+                return True
+        return False
+
+    for workflow in workflows["items"]:
+        for key, node in workflow["status"].get("nodes", {}).items():
+            if node.get("templateName") != template:
+                continue
+
+            if node.get("phase") != "Failed":
+                continue
+
+            parameters = node.get("inputs", {}).get("parameters", {})
+            if not parameters:
+                continue
+
+            if not _belongs_to_group(parameters):
+                continue
+
+            yield normalize_argo_params(parameters)
+
+
+if __name__ == "__main__":
+    if len(sys.argv) != 5:
+        print(
+            "Usage: collect_failed_inputs.py <group_id> <template> <argo_api_host> <argo_api_port>"
+        )
+        sys.exit(1)
+
+    group_id, template, argo_api_host, argo_api_port = sys.argv[1:]
+    workflows = requests.get(
+        f"https://{argo_api_host}:{argo_api_port}/api/v1/workflows/argo", verify=False
+    ).json()
+    print(json.dumps(list(collect_failed_inputs(group_id, template, workflows))))
diff --git a/benchmarks/k8s/increment_retry_counter.py b/benchmarks/k8s/increment_retry_counter.py
new file mode 100644
index 0000000..88e4f64
--- /dev/null
+++ b/benchmarks/k8s/increment_retry_counter.py
@@ -0,0 +1,18 @@
+import re
+import sys
+
+
+def increment_retry_counter(group_id: str) -> str:
+    retry = re.match(r"(.+)-r(\d+)$", group_id)
+    if not retry:
+        return f"{group_id}-r1"
+
+    return f"{retry.group(1)}-r{int(retry.group(2)) + 1}"
+
+
+if __name__ == "__main__":
+    if len(sys.argv) != 2:
+        print("Usage: increment_retry_counter.py <group_id>")
+        sys.exit(1)
+
+    print(increment_retry_counter(sys.argv[1]))
diff --git a/benchmarks/k8s/tests/test_collect_failed_inputs.py b/benchmarks/k8s/tests/test_collect_failed_inputs.py
new file mode 100644
index 0000000..d1bac0f
--- /dev/null
+++ b/benchmarks/k8s/tests/test_collect_failed_inputs.py
@@ -0,0 +1,90 @@
+from benchmarks.k8s.collect_failed_inputs import collect_failed_inputs
+
+API_RESPONSE = {
+    "items": [
+        {"status": {"no-nodes": []}},
+        {
+            "status": {
+                "nodes": {
+                    "codex-benchmark-4pkjd-1084037939": {
+                        "templateName": "wrapped-benchmark-experiment",
+                        "phase": "Failed",
+                        "inputs": {
+                            "parameters": [
+                                {"name": "groupId", "value": "g1"},
+                                {"name": "seeders", "value": "1"},
+                                {"name": "repetitions", "value": "5"},
+                            ]
+                        },
+                    },
+                    "codex-benchmark-4pkjd-1084037941": {
+                        "templateName": "wrapped-benchmark-experiment",
+                        "phase": "Failed",
+                        "inputs": {
+                            "parameters": [
+                                {"name": "groupId", "value": "g3"},
+                                {"name": "seeders", "value": "1"},
+                                {"name": "repetitions", "value": "7"},
+                            ]
+                        },
+                    },
+                    "codex-benchmark-4pkjd-1084037940": {
+                        "templateName": "some-other-node",
+                        "phase": "Succeeded",
+                        "inputs": {
+                            "parameters": [
+                                {"name": "groupId", "value": "g1"},
+                                {"name": "seeders", "value": "1"},
+                                {"name": "repetitions", "value": "6"},
+                            ]
+                        },
+                    },
+                    "codex-benchmark-4pkjd-1118304667": {
+                        "templateName": "cleanup",
+                        "phase": "Omitted",
+                    },
+                }
+            }
+        },
+    ]
+}
+
+
+def test_should_extract_parameters_for_failed_nodes_matching_template():
+    assert list(
+        collect_failed_inputs(
+            group_id="g1",
+            template="wrapped-benchmark-experiment",
+            workflows=API_RESPONSE,
+        )
+    ) == [{"groupId": "g1", "seeders": 1, "repetitions": 5}]
+
+    assert list(
+        collect_failed_inputs(
+            group_id="g3",
+            template="wrapped-benchmark-experiment",
+            workflows=API_RESPONSE,
+        )
+    ) == [{"groupId": "g3", "seeders": 1, "repetitions": 7}]
+
+
+def test_should_return_empty_if_no_failing_nodes():
+    assert (
+        list(
+            collect_failed_inputs(
+                group_id="g1", template="some-other-node", workflows=API_RESPONSE
+            )
+        )
+        == []
+    )
+
+
+def test_should_return_empty_if_no_matching_group_id():
+    assert (
+        list(
+            collect_failed_inputs(
+                group_id="g5", template="some-other-node", workflows=API_RESPONSE
+            )
+        )
+        == []
+    )
diff --git a/benchmarks/k8s/tests/test_increment_retry_counter.py b/benchmarks/k8s/tests/test_increment_retry_counter.py
new file mode 100644
index 0000000..3593a8b
--- /dev/null
+++ b/benchmarks/k8s/tests/test_increment_retry_counter.py
@@ -0,0 +1,12 @@
+from benchmarks.k8s.increment_retry_counter import increment_retry_counter
+
+
+def test_should_add_counter_if_absent():
+    assert increment_retry_counter("sometestgroup") == "sometestgroup-r1"
+
+
+def test_should_increment_counter_if_present():
+    assert increment_retry_counter("sometestgroup-r1") == "sometestgroup-r2"
+    assert increment_retry_counter("sometestgroup-r2") == "sometestgroup-r3"
+    assert increment_retry_counter("sometestgroup-r10") == "sometestgroup-r11"
+    assert increment_retry_counter("sometestgroup-r100") == "sometestgroup-r101"