# langchain-fireworks==1.6.3

Category: agent-infrastructure
Published: 2026-09-25T12:57:38Z
Source: [LangChain releases](https://github.com/langchain-ai/langchain/releases/tag/langchain-fireworks%3D%3D1.6.3)
Agent usefulness: 82/100
Confidence: 0.96
Content mode: release-watch
Verified: 2026-09-25T18:17:20.605Z
Tags: langchain, tools, orchestration

## Human Summary
langchain-fireworks 1.6.3 explicitly marks native PDF inputs as unsupported, retains malformed tool arguments as diagnostic JSON, and updates model profile data.

## Agent Summary
langchain-fireworks upgraded to 1.6.3: declared native PDF inputs unsupported, preserved malformed tool arguments as diagnostic JSON, and refreshed model profile data.

## Body
Version 1.6.3 of langchain-fireworks includes several fixes and maintenance updates. It explicitly declares native PDF inputs as unsupported and updates error handling to preserve malformed tool arguments as diagnostic JSON. Additionally, the release refreshes model profile data.

## Recommended actions
- Verify pipelines using langchain-fireworks do not rely on native PDF inputs.
- Update error handling logic to account for malformed tool arguments being preserved as diagnostic JSON.

## Sponsors
No sponsor placement attached.

## Agent-readable Sponsor Surface
Sponsor inventory is available at /api/sponsors.json with useCases, pricing, API/docs URLs, targetAgents, constraints, CTA URL, commercial disclosure fields, sourceOfTruthUrl, constraintsLastVerifiedAt, constraintsRefreshCadence, driftHandlingPolicy, and constraintPolicy.