LiteLLM / LiteLLM

LiteLLM phantom BudgetExceededError — Redis spend counter leak

Fix random LiteLLM BudgetExceededError (429) when actual spend is near zero Includes evidence for LiteLLM troubleshooting demand.

Source-backed Last updated May 11, 2026 1 source Needs local verification

Category: LiteLLM
Error signature: BudgetExceededError (HTTP 429)
Quick fix: Compare the failing environment with a known working setup, then change one configuration value at a time.
Updated: May 11, 2026
Verification status: Source-backed
Evidence: 1 public source URL

Before you change production

This page includes public source URLs in the imported troubleshooting record. Compare those references with your version and environment before applying changes.

Reproduce the smallest failing action and save non-secret logs before changing configuration.
Check versions for LiteLLM, related SDKs, package managers, CI runners, and hosting providers.
Change one setting or dependency at a time, then rerun the same failing command or request.
Avoid destructive commands, credential rotation, billing changes, or security relaxations without a rollback plan.

What this error means

BudgetExceededError (HTTP 429) is a LiteLLM failure pattern reported for developers trying to fix random litellm budgetexceedederror (429) when actual spend is near zero. Based on the imported evidence, treat this as a tool-specific troubleshooting page rather than a generic API error.

Why this happens

GitHub issue #27639 on BerriAI/litellm (created 2026-05-11). Production deployment on EKS with 4 replicas, Redis cache enabled. Phantom BudgetExceededError cycles every 4 minutes. Root cause: reserve_budget_for_request() leaks Redis spend counters after upgrade. Directly impacts billing and user experience.

Common causes

After upgrading to LiteLLM v1.83.10+, end users randomly receive HTTP 429 BudgetExceededError despite database spend being near $0. The Redis atomic counter spend:end_user:<id> accumulates phantom reservations that are never finalized. Requests cycle between success and failure every ~4 minutes. Critical for production proxy deployments with Kubernetes.
GitHub issue #27639 on BerriAI/litellm (created 2026-05-11). Production deployment on EKS with 4 replicas, Redis cache enabled. Phantom BudgetExceededError cycles every 4 minutes. Root cause: reserve_budget_for_request() leaks Redis spend counters after upgrade. Directly impacts billing and user experience.

Quick fixes

Confirm the exact error signature matches BudgetExceededError (HTTP 429).
Check the LiteLLM account, local tool state, and provider configuration involved in the failing workflow.
Compare the failing environment with a known working setup, then change one configuration value at a time.

Platform/tool-specific checks

Verify the command, editor, extension, or API client that produced the error.
Compare local settings with CI, deployment, or editor-level settings when the error appears in only one environment.
Avoid deleting credentials, local model data, or project settings until the failing scope is clear.

Step-by-step troubleshooting

Capture the exact error message and the command, editor action, or request that triggered it.
Check whether the failure is account/auth, quota/rate, model/provider, local runtime, or deployment configuration.
Review the source evidence below and compare it with your environment.
Apply one change at a time and rerun the smallest failing action.
Keep the working fix documented for the team or deployment environment.

How to prevent it

Keep provider/tool configuration documented.
Record non-secret diagnostics such as tool version, provider name, model name, and command path.
Add a lightweight check before CI or production workflows depend on the tool.

Diagnostic flow for this page

Match BudgetExceededError (HTTP 429) exactly before applying the quick fix.
Compare the failing environment with LiteLLM versions, account scope, provider settings, and deployment context.
Check the listed common causes in order, starting with the cause that best matches your logs.
Use the evidence status below to decide whether to confirm against public sources or official documentation.
Apply one reversible change, rerun the smallest failing action, and keep rollback notes.

FAQ

What does BudgetExceededError (HTTP 429) mean in LiteLLM?

BudgetExceededError (HTTP 429) indicates the workflow described by "LiteLLM phantom BudgetExceededError — Redis spend counter leak" failed in a LiteLLM context. Start by confirming the exact signature and the component that emitted it.

What should I check first for BudgetExceededError (HTTP 429)?

Check whether this cause matches your environment: After upgrading to LiteLLM v1.83.10+, end users randomly receive HTTP 429 BudgetExceededError despite database spend being near $0. The Redis atomic counter spend:end_user:<id> accumulates phantom reservations that are never finalized. Requests cycle between success and failure every ~4 minutes. Critical for production proxy deployments with Kubernetes.

Is the BudgetExceededError (HTTP 429) guidance source-backed?

The "LiteLLM phantom BudgetExceededError — Redis spend counter leak" page is labeled source-backed. It has 1 public source URL from github.com, so use that evidence status when deciding how much additional verification you need.

When should I avoid the quick fix for BudgetExceededError (HTTP 429)?

For "LiteLLM phantom BudgetExceededError — Redis spend counter leak", avoid applying "Compare the failing environment with a known working setup, then change one configuration value at a time." when the error text differs, the affected version or provider is different, or the change would touch credentials, billing, DNS, production deploy settings, or irreversible data.

What should I collect before debugging BudgetExceededError (HTTP 429)?

For "LiteLLM phantom BudgetExceededError — Redis spend counter leak", collect the failing LiteLLM command or request, non-secret configuration, versions, timestamps, request IDs when available, and the smallest reproduction that still triggers the signature.