What's Changed
- merge main by @Sameerlite in #20252
- [Docs] 1.81.9 stability by @ishaan-jaff in #20665
- Semantic filter hook warning by @krrishdholakia in #20651
- Litellm docs rc fixes by @ishaan-jaff in #20667
- [Bug] PostHog JSON serialization error for non-serializable objects by @shivamrawat1 in #20668
- Observatory block post update by @AlexsanderHamir in #20670
- [Docs] UI Team Soft Budget by @yuneng-jiang in #20669
- [Docs] UI Contributing and Troubleshooting by @yuneng-jiang in #20674
- [Docs] Reorganize Admin UI Subsection by @yuneng-jiang in #20676
- docs: add LiteLLM Observatory section to v1.81.9 release notes by @AlexsanderHamir in #20675
- [Refactor] Add knip and removed some unused files by @yuneng-jiang in #20678
- [Fix] UI - Logs: Input and Output Copying by @yuneng-jiang in #20657
- docs: add callback registration optimization to v1.81.9 release notes by @ryan-crabbe in #20681
- docs: add middleware performance blog post by @ryan-crabbe in #20677
- [Fix] UI - Teams: Available Teams by @yuneng-jiang in #20682
- [Refactor] AntD refactoring and 0 cost models fix by @yuneng-jiang in #20687
- fix: empty guardrails/policies arrays should not trigger enterprise license check by @veeceey in #20567
- fix critical CVE vulnerabliltes by @Harshit28j in #20683
- Correct ElevenLabs support status in README by @iver56 in #20643
- fix: add hook to handle db case by @Harshit28j in #20635
- Add team policy mapping for zguard by @jwang-gif in #20608
- feat: add support for anthropic_messages call type in prompt caching by @nuernber in #19233
- docs: add SDK proxy authentication (OAuth2/JWT auto-refresh) by @Chesars in #20680
- Fix Bedrock Claude Opus 4.6 model ID (remove :0 suffix) by @veeceey in #20671
- OCI: Cohere responseFormat/Pydantic by @gotsysdba in #20663
- fix: show error details instead of 'Data Not Available' for failed requests by @veeceey in #20656
- fix(ui): add null guard for models in API keys table by @veeceey in #20655
- Fix: Spend logs pickle error with Pydantic models and redaction by @veeceey in #20685
- fix(vertex_ai): propagate extra_headers anthropic-beta to
request body by @eliasaronson in #20666 - fix(responses): preserve tool call argument deltas when streaming id is omitted by @emerzon in #20712
- add missing indexes on VerificationToken table by @CAFxX in #20736
- merge main by @Sameerlite in #20738
- fix(streaming): preserve interleaved thinking/redacted_thinking blocks by @emerzon in #20702
- Fix video list pagination cursors not encoded with provider metadata by @tsachis in #20710
- Litellm oss staging 02 08 2026 by @krrishdholakia in #20696
- Add output_config as supported param by @Sameerlite in #20748
- Add new vercel ai anthropic models by @Sameerlite in #20745
- [Feat]Add new claude 4-6 feat for v1/messages by @Sameerlite in #20733
- Fix: get_supported_anthropic_messages_params by @Sameerlite in #20752
- Fix: base_model name for body and deplyment name in URL by @Sameerlite in #20747
- [Feat] Chat completion - Add Websearch support using LiteLLM /search (using web search interception hook) by @Sameerlite in #20483
- fix conflicts with main- (this PR is from upstream/main) by @Harshit28j in #20601
- docs fix. -fwd client headers to LLM API by @ishaan-jaff in #20768
- [Feature] UI - Logs: Show Predefined Error Codes in Filter with User Definable Fallback by @yuneng-jiang in #20773
- fix(callbacks): allow MAX_CALLBACKS override via env var by @ishaan-jaff in #20781
- [Refactor] UI - Remove unused files + Add unit tests by @yuneng-jiang in #20780
- [Refactor] UI - Team Info: Migrate to AntD Tabs + Table by @yuneng-jiang in #20785
- fix(prometheus): sanitize label values to prevent metric scrape failures by @michelligabriele in #20600
- [Feat] MCP Oauth2 Fixes - Add support for MCP M2M Oauth2 support by @ishaan-jaff in #20788
- [Feature] UI - Invite User: Email Integration Alert by @yuneng-jiang in #20790
- [UI] M2M OAuth2 UI Flow by @ishaan-jaff in #20794
- [Fix] prevent shared backend model key from being polluted by per-deployment custom pricing by @shivamrawat1 in #20679
- fix(mcp): resolve OAuth2 root endpoints returning "MCP server not found" by @michelligabriele in #20784
- fix: Preserved nullable object fields by carrying schema properties by @Sameerlite in #19132
- Add support for langchain_aws via litellm passthrough by @Sameerlite in #20843
- Litellm oss staging 02 05 2026 3 by @Sameerlite in #20854
- feat: Add Sarvam AI STT and TTS support by @NirantK in #19656
- litellm oss staging 09/02/2026 by @krrishdholakia in #20783
- Add Kimi model pricing by region by @Sameerlite in #20855
- Add moonshotai.kimi-k2.5 by @Sameerlite in #20863
- Add support managed error file by @Sameerlite in #20838
- [Feat] Perplexity research api support by @Sameerlite in #20860
- Handle image in assitant message for gemini by @Sameerlite in #20845
- fix(otel): auto-infer otlp_http exporter when endpoint is configured by @michelligabriele in #20438
- fix(aiohttp): respect ssl_verify with shared sessions by @michelligabriele in #20349
- [Feature] UI - Spend Logs: Paginated Searchable Model Select by @yuneng-jiang in #20892
- [Infra] CI/CD - Fix PyPI CI Step by @yuneng-jiang in #20893
- feat(model-db): add azure_ai/kimi-k2.5 to azure model DB by @emerzon in #20896
- Guardrails - add logging to all unified_guardrails + link to custom code guardrail templates by @krrishdholakia in #20900
- [Stability] Investigate + fix issue where model cost map became poorly formatted by @ishaan-jaff in #20895
- fix(router): propagate model-level tags from config to SpendLogs by @michelligabriele in #20769
- [Release - 02/10/2026] v1.81.10-nightly by @AlexsanderHamir in #20903
- [Fix] /v2/guardrails/list Returns Sensitive Values by @yuneng-jiang in #20796
- [Feature] Include Config Defined Pass Through Endpoints by @yuneng-jiang in #20898
- [Fix] UI - Usage: Request Chart stack variant by @yuneng-jiang in #20894
New Contributors
- @iver56 made their first contribution in #20643
- @eliasaronson made their first contribution in #20666
- @NirantK made their first contribution in #19656
Full Changelog: v1.81.9-nightly...litellm_stable_build-test-v0.1