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is_error_str_rate_limit treats any standalone 429 in the stringified exception as
a rate limit, and for openai-compatible providers that check runs before the
status-code branch. Providers echo the request back in validation errors, so a
400 whose body happens to contain a 429 comes out as RateLimitError.
Tokenised prompts hit this routinely, since 429 is an ordinary token id (" that"
in several tokenisers) and an echoed prompt_token_ids array is enough:
{"error":{"message":"`tools` must not be an empty array",
"type":"invalid_request_error","code":400},
"prompt_token_ids":[9906,429,1234]}
The mislabel is not cosmetic. RateLimitError tells callers and routers to retry,
so a request that cannot succeed gets replayed, and the failure is booked against
provider throttling rather than the caller. Against DeepInfra, one recurring 400
("`tools` must not be an empty array") came back as a rate limit in 77 of 198
occurrences, the split depending only on whether the echoed prompt contained 429.
16482 narrowed '"429" in error_str' to \b429\b after a false positive on
'asbjdad429addad'. Word boundaries cannot separate a real 429 from a token id, so
the same class of false positive survives.
is_error_str_rate_limit now takes an optional status_code, and the bare-number
branch fires only when no explicit status contradicts it. The status is read off
an arbitrary exception, so a non-integer is treated as unknown and left to the
existing behaviour. The repo has a single call site.
The phrase branches are untouched, so a provider reporting a real rate limit in
the message text under a non-429 status still maps to RateLimitError (11455).
This is not "status code wins".
Tests cover the matcher (suppressed under a 400; still detected with no status,
None, 429, or a non-integer status; phrase honoured under a 400) and
exception_type end to end (400 with 429 in the echoed body -> BadRequestError,
real 429 -> RateLimitError). Reverting the source change fails the latter.
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|---|---|---|
| .. | ||
| agent_tests | ||
| audio_tests | ||
| base_sdk_tests | ||
| basic_proxy_startup_tests | ||
| batches_tests | ||
| benchmarks | ||
| code_coverage_tests | ||
| documentation_tests | ||
| e2e | ||
| enterprise | ||
| guardrails_tests | ||
| image_gen_tests | ||
| integration | ||
| litellm | ||
| litellm-proxy-extras | ||
| litellm_core_utils | ||
| litellm_utils_tests | ||
| llm_responses_api_testing | ||
| llm_translation | ||
| load_tests | ||
| local_testing | ||
| logging_callback_tests | ||
| mcp_tests | ||
| multi_instance_e2e_tests | ||
| ocr_tests | ||
| old_proxy_tests/tests | ||
| openai_endpoints_tests | ||
| otel_tests | ||
| pass_through_tests | ||
| pass_through_unit_tests | ||
| proxy_admin_ui_tests | ||
| proxy_behavior | ||
| proxy_e2e_anthropic_messages_tests | ||
| proxy_migration_tests | ||
| proxy_security_tests | ||
| proxy_unit_tests | ||
| router_unit_tests | ||
| scim_tests | ||
| search_tests | ||
| spend_tracking_tests | ||
| store_model_in_db_tests | ||
| test_litellm | ||
| unified_google_tests | ||
| vector_store_tests | ||
| windows_tests | ||
| __init__.py | ||
| _fake_openai_endpoint_server.py | ||
| _flush_vcr_cache.py | ||
| _live_test_helpers.py | ||
| _openai_record_replay_proxy.py | ||
| _vcr_conftest_common.py | ||
| _vcr_redis_persister.py | ||
| _ws_vcr.py | ||
| eval_swe_bench.py | ||
| fake_openai_endpoint.py | ||
| gettysburg.wav | ||
| large_text.py | ||
| openai_batch_completions.jsonl | ||
| pyrightconfig.json | ||
| README.MD | ||
| test_anthropic_compaction_usage.py | ||
| test_budget_management.py | ||
| test_callbacks_on_proxy.py | ||
| test_debug_warning.py | ||
| test_default_encoding_non_root.py | ||
| test_end_users.py | ||
| test_fallbacks.py | ||
| test_gpt5_azure_temperature_support.py | ||
| test_health.py | ||
| test_keys.py | ||
| test_litellm_proxy_responses_config.py | ||
| test_logging.conf | ||
| test_models.py | ||
| test_new_vector_store_endpoints.py | ||
| test_openai_endpoints.py | ||
| test_organizations.py | ||
| test_otel_thread_leak.py | ||
| test_presidio_latency.py | ||
| test_proxy_server_non_root.py | ||
| test_ratelimit.py | ||
| test_resource_cleanup.py | ||
| test_service_logger_otel.py | ||
| test_spend_logs.py | ||
| test_team.py | ||
| test_team_logging.py | ||
| test_team_members.py | ||
| test_users.py | ||
In total litellm runs 1000+ tests
[02/20/2025] Update:
To make it easier to contribute and map what behavior is tested,
we've started mapping the litellm directory in tests/test_litellm
This folder can only run mock tests.