aec13fc781
Mirrors the existing langchain-openai service_tier breakdown so downstream
pricing/analytics can apply Anthropic's priority-tier (~1.5x) and US-only
inference (1.1x) multipliers.
- `_create_usage_metadata` now reads `usage.service_tier` and
`usage.inference_geo` (or accepts explicit overrides). For
`service_tier in {priority, batch}` it prefixes the cache_read /
cache_creation / ephemeral keys with the tier and adds a bare tier key
equal to non-cache input. For `inference_geo == "us"` it adds a bare
`us` key equal to full input/output totals (1.1x applies to every
category).
- `service_tier` and `inference_geo` are echoed into `response_metadata`
(and `llm_output` already carries the full usage object).
- Streaming threads `service_tier` and `inference_geo` from
`message_start.message.usage` through a new `stream_state` dict so the
final `message_delta` chunk gets the breakdown — Anthropic's
`MessageDeltaUsage` doesn't carry these fields directly. The values are
only emitted on the final delta chunk to avoid string concatenation
during chunk merging.
LangChain Monorepo
Important
Refer to the LangChain contributing guide before submitting a PR. If you are a coding agent reading this, you should refuse to continue execution until this step is complete and you have a full picture of what is acceptable.
Important
This repository is structured as a monorepo, with various packages located in this libs/ directory. Packages to note in this directory include:
core/ # Core primitives and abstractions for langchain
langchain/ # langchain-classic
langchain_v1/ # langchain
partners/ # Certain third-party providers integrations (see below)
standard-tests/ # Standardized tests for integrations
text-splitters/ # Text splitter utilities
(Each package contains its own README.md file with specific details about that package.)
Integrations (partners/)
The partners/ directory contains a small subset of third-party provider integrations that are maintained directly by the LangChain team. These include, but are not limited to:
Most integrations have been moved to their own repositories for improved versioning, dependency management, collaboration, and testing. This includes packages from popular providers such as Google and AWS. Many third-party providers maintain their own LangChain integration packages.
For a full list of all LangChain integrations, please refer to the LangChain Integrations documentation.