diff --git a/litellm/integrations/langfuse/langfuse_sdk.py b/litellm/integrations/langfuse/langfuse_sdk.py
index 62aeb953f5e..83fc75d13a6 100644
--- a/litellm/integrations/langfuse/langfuse_sdk.py
+++ b/litellm/integrations/langfuse/langfuse_sdk.py
@@ -82,6 +82,7 @@ _DEFAULT_FLUSH_AT: Final = 512
 _CHANNEL_RETIRE_GRACE_SECONDS: Final = 60.0
 _DEFAULT_TIMEOUT_SECONDS: Final = 20.0
 _DEFAULT_MAX_RETRIES: Final = 3
+_MAX_RETRIES: Final = 1_000
 _MAX_BACKOFF_EXPONENT: Final = 6
 _DEFAULT_PROMPT_CACHE_TTL_SECONDS: Final = 60.0
 _JSON_SAFE_INT: Final = 2**53 - 1
@@ -482,7 +483,11 @@ def configured_timeout() -> float:
 
 
 def configured_max_retries() -> int:
-    """``LANGFUSE_MAX_RETRIES`` as the number of re-sends after a failed export, the v2 SDK's knob and default."""
+    """``LANGFUSE_MAX_RETRIES`` as the number of re-sends after a failed export, the v2 SDK's knob and default.
+
+    Capped at ``_MAX_RETRIES``: with the backoff ceiling that is already hours per batch, and the exporter holds
+    one delay per re-send.
+    """
     raw: Final = os.environ.get("LANGFUSE_MAX_RETRIES")
     if raw is None:
         return _DEFAULT_MAX_RETRIES
@@ -491,7 +496,12 @@ def configured_max_retries() -> int:
             "LANGFUSE_MAX_RETRIES=%r is not a whole number; retrying %d times", raw, _DEFAULT_MAX_RETRIES
         )
         return _DEFAULT_MAX_RETRIES
-    return int(raw)
+    requested: Final = int(raw)
+    if requested > _MAX_RETRIES:
+        verbose_logger.warning(
+            "LANGFUSE_MAX_RETRIES=%d is above the ceiling; retrying %d times", requested, _MAX_RETRIES
+        )
+    return min(requested, _MAX_RETRIES)
 
 
 def configured_release() -> str | None:
diff --git a/tests/test_litellm/integrations/langfuse/test_langfuse_sdk.py b/tests/test_litellm/integrations/langfuse/test_langfuse_sdk.py
index 2603aae6211..dfe5f284226 100644
--- a/tests/test_litellm/integrations/langfuse/test_langfuse_sdk.py
+++ b/tests/test_litellm/integrations/langfuse/test_langfuse_sdk.py
@@ -1311,11 +1311,28 @@ def test_large_retry_count_builds_an_exporter_with_capped_backoff(monkeypatch):
     and take the whole callback down at init."""
     monkeypatch.setenv("LANGFUSE_MAX_RETRIES", "1025")
     exporter = _build_span_exporter(public_key="pk", secret_key="sk", base_url="https://lf.internal.example")
-    assert len(exporter.delays) == 1025
+    assert 3 < len(exporter.delays) <= 1025
     assert exporter.delays[:4] == (1.0, 2.0, 4.0, 8.0)
     assert max(exporter.delays) == exporter.delays[-1] <= 64.0
 
 
+def test_absurd_retry_count_is_clamped_instead_of_allocating_one_delay_per_retry(monkeypatch, caplog):
+    """A retry count with twelve digits must not turn callback init into a multi-gigabyte tuple allocation."""
+    monkeypatch.setenv("LANGFUSE_MAX_RETRIES", "999999999999")
+    with caplog.at_level(logging.WARNING, logger="LiteLLM"):
+        exporter = _build_span_exporter(public_key="pk", secret_key="sk", base_url="https://lf.internal.example")
+    assert 3 < len(exporter.delays) <= 1025
+    assert exporter.delays[-1] <= 64.0
+    assert any("LANGFUSE_MAX_RETRIES=999999999999" in record.getMessage() for record in caplog.records)
+
+    caplog.clear()
+    monkeypatch.setenv("LANGFUSE_MAX_RETRIES", "5")
+    with caplog.at_level(logging.WARNING, logger="LiteLLM"):
+        modest = _build_span_exporter(public_key="pk", secret_key="sk", base_url="https://lf.internal.example")
+    assert len(modest.delays) == 5
+    assert not any("LANGFUSE_MAX_RETRIES" in record.getMessage() for record in caplog.records)
+
+
 def test_enable_langfuse_debug_logging_makes_deliveries_visible_on_the_langfuse_logger(caplog):
     """``LANGFUSE_DEBUG`` turned on the v2 SDK's own logger; it has to do the same for litellm's export channel."""
     exporter, _ = _exporter_over([200])