# langchain-openai==1.7.3

Category: agent-infrastructure
Published: 2026-10-26T23:08:48Z
Source: [LangChain releases](https://github.com/langchain-ai/langchain/releases/tag/langchain-openai%3D%3D1.7.3)
Agent usefulness: 77/100
Confidence: 0.96
Content mode: release-watch
Verified: 2026-10-27T00:17:50.532Z
Tags: langchain, tools, orchestration

## Human Summary
langchain-openai version 1.7.3 was released, bringing refreshed model profile data, relaxed third-party dependency upper bounds, and multiple dependency updates and security patches.

## Agent Summary
Release langchain-openai==1.7.3 updates OpenAI model profile data, switches integration tests to a current lightweight model, relaxes third-party dependency upper bounds, and bumps several dependencies including aiohttp, certifi, requests, and orjson.

## Body
The langchain-openai package has been updated to version 1.7.3. Key changes include refreshing OpenAI model profile data, using a current lightweight model for integration tests, and addressing dependencies across the package. Specifically, upper bounds on third-party dependencies were relaxed, dependency issues in partner packages were resolved, and vulnerable integration dependencies were patched. Multiple underlying dependencies were bumped, including aiohttp (to 3.14.5), certifi (to 2026.10.19), requests (to 2.34.2), orjson (to 3.13.0), pygments, and pytest.

## Recommended actions
- Upgrade to langchain-openai==1.7.3 to incorporate refreshed model profiles and patched dependency bounds.
- Verify compatibility with updated networking and parsing dependencies such as aiohttp, requests, and orjson.

## 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.