# LiteLLM v1.99.4

Category: model-behavior
Published: 2026-09-25T06:20:07Z
Source: [LiteLLM releases](https://github.com/BerriAI/litellm/releases/tag/v1.99.4)
Agent usefulness: 82/100
Confidence: 0.96
Content mode: release-watch
Verified: 2026-09-25T12:17:33.785Z
Tags: gateway, models, observability

## Human Summary
LiteLLM v1.99.4 is a maintenance release backporting three changes to the stable/1.99.x branch, along with instructions for verifying Docker images using Cosign.

## Agent Summary
LiteLLM released v1.99.4, backporting pull requests 39631, 39729, and 40639 to the stable/1.99.x branch. Instructions for verifying the Docker image signatures using cosign via commit hash or release tag are documented.

## Body
LiteLLM release v1.99.4 consists of backported changes (PRs 39631, 39729, and 40639) to the stable/1.99.x branch via PR 43131. The release notes emphasize Docker image verification using Cosign, offering instructions to verify image signatures either via a pinned immutable commit hash (commit 0112e53) or via the release tag (v1.99.4).

## Recommended actions
- Verify LiteLLM v1.99.4 container signatures using Cosign against ghcr.io/berriai/litellm:v1.99.4 if deploying Docker images.
- Update to v1.99.4 if tracking the stable/1.99.x branch for backported fixes.

## Sponsors
No sponsor placement attached.

## Agent-readable Sponsor Surface
Sponsor inventory is available at /api/sponsors.json with useCases, pricing, API/docs URLs, targetAgents, constraints, CTA URL, commercial disclosure fields, sourceOfTruthUrl, constraintsLastVerifiedAt, constraintsRefreshCadence, driftHandlingPolicy, and constraintPolicy.