pypi / langchain-aws
langchain-aws
What changed in langchain-aws 1, from its official release notes, upgrade guides and advisories. Sources checked 2026-10-28.
4 new APIs and options1 behavior and defaults10 fixes and other
See which of these apply to your code, ranked, in your agent:
npx @unstale/cli initlangchain-aws 115 changes
New APIs and options 4
Adds support for Z.ai models on ChatBedrockConverse.
Supports requestMetadata on InvokeModel API calls.
Model profiles declare mid-conversation support.
Claude Haiku 5.5 supports effort levels and default thinking.
Behavior and default changes 1
Reports Converse thinking tokens in output_token_details.
Fixes and other changes 10
Fixes the put→get round-trip for AgentCoreMemoryStore.
Replaces blanket media type profile overrides with per-model ones.
Adds missing reasoning_effort_levels overrides to model profiles.
Makes the fallback name for unnamed file blocks deterministic.
Prevents failure when content has a general plain-text MIME type.
Resolves actor_id for nested subgraph get_state.
Adds missing reasoning_effort_levels to model profiles.
ChatBedrock input_tokens now includes cache read and write tokens, matching ChatBedrockConverse behavior since 1.4.6.
Streaming support is fixed for Claude Haiku 5.5.
Streamed tool_use blocks with input that is not valid JSON are replayed.