BerriAI/litellm
Dec 2025 – Feb 2026
3 Months active
Languages Used
Python
Technical Skills
API developmentFastAPIPydanticbackend developmentstreaming data handlingAPI integration
Xiaohan Fu
PROFILE
Xiaohan Fu
Xiaohan developed robust backend features for the BerriAI/litellm repository, focusing on streaming support and guardrail reliability for OpenRouter-driven models. Using Python, FastAPI, and Pydantic, Xiaohan implemented end-to-end streaming responses with integrated guardrail checks, supporting both dictionary and Pydantic payloads to enhance flexibility and safety. Xiaohan also introduced a fail-open option and timeout for the GraySwan guardrail, improving error handling and resilience during service outages. By fixing fail-open behavior and enabling API metadata pass-through, Xiaohan strengthened observability and reduced downtime. The work demonstrated depth in API integration, exception handling, and streaming data management within a production environment.
Overall Statistics
Feature vs Bugs
67%Features
Repository Contributions
3Total
Bugs
1
Commits
3
Features
2
Lines of code
1,318
Activity Months3
Your Network
572 people
Work History
February 2026
1 Commits
Feb 1, 2026February 2026 — BerriAI/litellm: Delivered the Gray Swan Guardrail Fail-Safe fix and API metadata pass-through, significantly improving reliability and data integrity. Updated documentation and enhanced exception handling to reduce downtime and improve debugging. Commit 2b25d03046da9dbd42f3d2b9f85ed02400910c1c documents the changes. Result: safer fail-open behavior, metadata propagation to Cygnal API endpoint, and stronger observability.
1 Commits
Feb 1, 2026February 2026 — BerriAI/litellm: Delivered the Gray Swan Guardrail Fail-Safe fix and API metadata pass-through, significantly improving reliability and data integrity. Updated documentation and enhanced exception handling to reduce downtime and improve debugging. Commit 2b25d03046da9dbd42f3d2b9f85ed02400910c1c documents the changes. Result: safer fail-open behavior, metadata propagation to Cygnal API endpoint, and stronger observability.
February 2026
January 2026
1 Commits • 1 Features
Jan 1, 2026January 2026 (2026-01) – Delivered reliability enhancement for GraySwan guardrail in BerriAI/litellm. Introduced a fail-open option (default True) and a 30-second timeout for guardrail service calls to improve error handling and resilience. These changes reduce outage impact and enable safer fallbacks, supporting stable user experiences and faster incident response.
January 2026
1 Commits • 1 Features
Jan 1, 2026January 2026 (2026-01) – Delivered reliability enhancement for GraySwan guardrail in BerriAI/litellm. Introduced a fail-open option (default True) and a 30-second timeout for guardrail service calls to improve error handling and resilience. These changes reduce outage impact and enable safer fallbacks, supporting stable user experiences and faster incident response.
December 2025
1 Commits • 1 Features
Dec 1, 2025December 2025: Delivered end-to-end streaming support for OpenRouter-driven models in BerriAI/litellm with integrated guardrail checks. The feature enables streaming responses, supports both dictionary and Pydantic object payloads, and streams chunked responses toward the guardrail to improve robustness and flexibility. Completed targeted fixes to the OpenRouter streaming path (notably the /messages flow) and introduced an option to send all chunked responses in stream to guardrail for greater resilience and safety alignment.
1 Commits • 1 Features
Dec 1, 2025December 2025: Delivered end-to-end streaming support for OpenRouter-driven models in BerriAI/litellm with integrated guardrail checks. The feature enables streaming responses, supports both dictionary and Pydantic object payloads, and streams chunked responses toward the guardrail to improve robustness and flexibility. Completed targeted fixes to the OpenRouter streaming path (notably the /messages flow) and introduced an option to send all chunked responses in stream to guardrail for greater resilience and safety alignment.
December 2025
Activity
Loading activity data...
Quality Metrics
Correctness80.0%
Maintainability80.0%
Architecture80.0%
Performance80.0%
AI Usage40.0%
Skills & Technologies
Programming Languages
Python
Technical Skills
API developmentAPI integrationFastAPIPydanticbackend developmenterror handlingexception handlingstreaming data handlingtesting
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline