v1.83.7-stable

## Verify Docker Image Signature

All LiteLLM Docker images are signed with [cosign](https://docs.sigstore.dev/cosign/overview/). Every release is signed with the same key introduced in [commit `0112e53`](https://github.com/BerriAI/litellm/commit/0112e53046018d726492c814b3644b7d376029d0).

**Verify using the pinned commit hash (recommended):**

A commit hash is cryptographically immutable, so this is the strongest way to ensure you are using the original signing key:

```bash
cosign verify \
  --key https://raw.githubusercontent.com/BerriAI/litellm/0112e53046018d726492c814b3644b7d376029d0/cosign.pub \
  ghcr.io/berriai/litellm:v1.83.7-stable
```

**Verify using the release tag (convenience):**

Tags are protected in this repository and resolve to the same key. This option is easier to read but relies on tag protection rules:

```bash
cosign verify \
  --key https://raw.githubusercontent.com/BerriAI/litellm/v1.83.7-stable/cosign.pub \
  ghcr.io/berriai/litellm:v1.83.7-stable
```

Expected output:

```
The following checks were performed on each of these signatures:
  - The cosign claims were validated
  - The signatures were verified against the specified public key
```

---
## What's Changed
* Litellm docs 1 83 3 by @ishaan-berri in https://github.com/BerriAI/litellm/pull/25166
* [Nit] Small docs fix, fixing img + folder name  by @ishaan-berri in https://github.com/BerriAI/litellm/pull/25171
* docs: week 1 checklist by @mubashir1osmani in https://github.com/BerriAI/litellm/pull/25083
* [Docs] Add cosign Docker image verification steps to security blog posts by @yuneng-berri in https://github.com/BerriAI/litellm/pull/25122
* [Infra] Remove flaky proxy_e2e_azure_batches_tests CI workflow by @yuneng-berri in https://github.com/BerriAI/litellm/pull/25247
* [Docs] Enforce Black Formatting in Contributor Docs by @yuneng-berri in https://github.com/BerriAI/litellm/pull/25135
* [Infra] Remove Redundant Matrix Unit Test Workflow by @yuneng-berri in https://github.com/BerriAI/litellm/pull/25251
* feat: add POST /team/permissions_bulk_update endpoint by @ryan-crabbe-berri in https://github.com/BerriAI/litellm/pull/25239
* fix: batch-limit stale managed object cleanup to prevent 300K row UPD… by @ishaan-berri in https://github.com/BerriAI/litellm/pull/25258
* bump litellm-enterprise to 0.1.37 by @ishaan-berri in https://github.com/BerriAI/litellm/pull/25265
* bump litellm version to 1.83.4 by @ishaan-berri in https://github.com/BerriAI/litellm/pull/25266
* Litellm aws gov cloud mode support by @shivamrawat1 in https://github.com/BerriAI/litellm/pull/25254
* [Fix] Update check_responses_cost tests for _expire_stale_rows by @yuneng-berri in https://github.com/BerriAI/litellm/pull/25299
* [Test] UI - E2E: Add Playwright tests with local PostgreSQL by @yuneng-berri in https://github.com/BerriAI/litellm/pull/25126
* [Fix] Dockerfile.non_root: handle missing .npmrc gracefully by @yuneng-berri in https://github.com/BerriAI/litellm/pull/25307
* fix(auth): allow JWT override OAuth2 routing without global OAuth2 enablement by @milan-berri in https://github.com/BerriAI/litellm/pull/25252
* [Infra] Pin cosign.pub verification to initial commit hash by @yuneng-berri in https://github.com/BerriAI/litellm/pull/25273
* [Refactor] Align /v2/key/info response handling with v1 by @yuneng-berri in https://github.com/BerriAI/litellm/pull/25313
* Fix node-gyp symlink path after npm upgrade in Dockerfile by @joereyna in https://github.com/BerriAI/litellm/pull/25048
* [Infra] Bump version 1.83.4 → 1.83.5 by @yuneng-berri in https://github.com/BerriAI/litellm/pull/25316
* fix(mcp): block arbitrary command execution via stdio transport by @Sameerlite in https://github.com/BerriAI/litellm/pull/25343
* [Infra] Migrate Redis caching tests from GHA to CircleCI by @yuneng-berri in https://github.com/BerriAI/litellm/pull/25354
* [Feature] UI E2E Tests: Proxy Admin Team and Key Management by @yuneng-berri in https://github.com/BerriAI/litellm/pull/25365
* Add Ramp as a built-in success callback by @kedarthakkar in https://github.com/BerriAI/litellm/pull/23769
* fix(router): tag-based routing broken when encrypted_content_affinity is enabled by @Sameerlite in https://github.com/BerriAI/litellm/pull/25347
* feat(triton): add embedding usage estimation for self-hosted responses by @Sameerlite in https://github.com/BerriAI/litellm/pull/25345
* fix(router): pass custom_llm_provider to get_llm_provider for unprefixed model names by @Sameerlite in https://github.com/BerriAI/litellm/pull/25334
* Litellm oss staging 04 02 2026 p1 by @krrish-berri-2 in https://github.com/BerriAI/litellm/pull/25055
* feat(cost): add baseten model api pricing entries by @Sameerlite in https://github.com/BerriAI/litellm/pull/25358
* feat(proxy): add credential overrides per team/project via model_config metadata by @michelligabriele in https://github.com/BerriAI/litellm/pull/24438
* docs: add Docker Image Security Guide (cosign verification & deployment best practices) by @krrish-berri-2 in https://github.com/BerriAI/litellm/pull/25439
* fix(test): mock headers in test_completion_fine_tuned_model by @joereyna in https://github.com/BerriAI/litellm/pull/25444
* feat(mcp): add per-user OAuth token storage for interactive MCP flows by @csoni-cweave in https://github.com/BerriAI/litellm/pull/25441
* [Fix] UI: improve storage handling and Dockerfile consistency by @yuneng-berri in https://github.com/BerriAI/litellm/pull/25384
* fix(responses-ws): append ?model= to backend WebSocket URL by @joereyna in https://github.com/BerriAI/litellm/pull/25437
* fix(proxy): improve input validation on management endpoints by @jaydns in https://github.com/BerriAI/litellm/pull/25445
* fix(proxy): use parameterized query for combined_view token lookup by @jaydns in https://github.com/BerriAI/litellm/pull/25467
* [Docs] Add missing MCP per-user token env vars to config_settings by @yuneng-berri in https://github.com/BerriAI/litellm/pull/25471
* [Test] UI - Unit tests: raise global vitest timeout and remove per-test overrides by @yuneng-berri in https://github.com/BerriAI/litellm/pull/25468
* [Fix] Harden file path resolution in skill archive extraction by @yuneng-berri in https://github.com/BerriAI/litellm/pull/25475
* refactor: consolidate route auth for UI and API tokens by @ryan-crabbe-berri in https://github.com/BerriAI/litellm/pull/25473
* merge main by @Sameerlite in https://github.com/BerriAI/litellm/pull/25524
* [Fix] Responses WebSocket Duplicate Keyword Argument Error by @yuneng-berri in https://github.com/BerriAI/litellm/pull/25513
* fix(bedrock): avoid double-counting cache tokens in Anthropic Messages streaming usage by @Sameerlite in https://github.com/BerriAI/litellm/pull/25517
* [Fix] Align v1 guardrail and agent list responses with v2 field handling by @yuneng-berri in https://github.com/BerriAI/litellm/pull/25478
* bump: version 1.83.5 → 1.83.6 by @yuneng-berri in https://github.com/BerriAI/litellm/pull/25528
* [Fix] Flush Tremor Tooltip timers in user_edit_view tests by @yuneng-berri in https://github.com/BerriAI/litellm/pull/25480
* [Infra] Merge Dev Branch with Main by @yuneng-berri in https://github.com/BerriAI/litellm/pull/25526
* docs: document april townhall announcements by @krrish-berri-2 in https://github.com/BerriAI/litellm/pull/25537
* feat(anthropic): support advisor_20260301 tool type by @ishaan-berri in https://github.com/BerriAI/litellm/pull/25525
* fix: a2a create a2a client default 60 second timeout  by @milan-berri in https://github.com/BerriAI/litellm/pull/25514
* fix(websearch_interception): ensure spend/cost logging runs when stream=True by @Sameerlite in https://github.com/BerriAI/litellm/pull/25424
* fix(responses): map refusal stop_reason to incomplete status in streaming by @Sameerlite in https://github.com/BerriAI/litellm/pull/25498
* feat(guardrails): optional skip system message in unified guardrail inputs by @Sameerlite in https://github.com/BerriAI/litellm/pull/25481
* feat(bedrock): skip dummy user continue for assistant prefix prefill by @Sameerlite in https://github.com/BerriAI/litellm/pull/25419
* feat(containers): Azure routing, managed container IDs, delete response parsing by @Sameerlite in https://github.com/BerriAI/litellm/pull/25287
* fix(logging): preserve proxy key-auth metadata on /v1/messages Langfuse traces by @michelligabriele in https://github.com/BerriAI/litellm/pull/25448
* Reduce default latency histogram bucket cardinality by @J-Byron in https://github.com/BerriAI/litellm/pull/25527
* fix(s3): add retry with exponential backoff for transient S3 503/500 errors by @jimmychen-p72 in https://github.com/BerriAI/litellm/pull/25530
* fix(proxy): preserve dict guardrail HTTPException.detail + bedrock context by @michelligabriele in https://github.com/BerriAI/litellm/pull/25558
* Add "Screenshots / Proof of Fix" section to PR template by @krrish-berri-2 in https://github.com/BerriAI/litellm/pull/25564
* fix(spend): session-TZ-independent date filtering for spend/error log queries by @ryan-crabbe-berri in https://github.com/BerriAI/litellm/pull/25542
* [Fix] Align Org and Team Endpoint Permission Checks by @yuneng-berri in https://github.com/BerriAI/litellm/pull/25554
* Litellm ishaan april10 by @ishaan-berri in https://github.com/BerriAI/litellm/pull/25545
* Add file content streaming support for OpenAI and related utilities by @harish876 in https://github.com/BerriAI/litellm/pull/25450
* [Infra] Merge dev with main by @yuneng-berri in https://github.com/BerriAI/litellm/pull/25568
* Litellm harish april11 by @ishaan-berri in https://github.com/BerriAI/litellm/pull/25569
* [Infra] Build UI for release by @yuneng-berri in https://github.com/BerriAI/litellm/pull/25571
* added applyguardrail to inline iam by @shivamrawat1 in https://github.com/BerriAI/litellm/pull/25241
* Team member permission /spend/logs for team-wide spend logs (UI + RBAC) by @shivamrawat1 in https://github.com/BerriAI/litellm/pull/25458
* [Infra] Rebuild UI by @yuneng-berri in https://github.com/BerriAI/litellm/pull/25573
* fix(proxy): pass-through multipart uploads and Bedrock JSON body by @shivamrawat1 in https://github.com/BerriAI/litellm/pull/25464
* Litellm internal staging 04 11 2026 by @krrish-berri-2 in https://github.com/BerriAI/litellm/pull/25562
* [Infra] Rebuild UI by @yuneng-berri in https://github.com/BerriAI/litellm/pull/25577
* bump: version 1.83.6 → 1.83.7 by @yuneng-berri in https://github.com/BerriAI/litellm/pull/25578

## New Contributors
* @kedarthakkar made their first contribution in https://github.com/BerriAI/litellm/pull/23769
* @jimmychen-p72 made their first contribution in https://github.com/BerriAI/litellm/pull/25530

**Full Changelog**: https://github.com/BerriAI/litellm/compare/v1.83.3-stable...v1.83.7-stable