Langasync – Use OpenAI/Anthropic Batch APIs with LangChain Chains
Turns existing LangChain pipelines into first-class batch jobs you can submit to provider batch endpoints without rewriting your chains. It automates JSONL uploads, polling (BatchPoller), provider-specific parsing into unified BatchItem results, partial-failure handling, and on-disk job persistence so batches can outlive your process — Vertex/Azure support is on the roadmap.