# OpenAI Python SDK v3.45.0

Category: model-behavior
Published: 2026-11-04T02:23:23Z
Source: [OpenAI Python SDK releases](https://github.com/openai/openai-python/releases/tag/v3.45.0)
Agent usefulness: 77/100
Confidence: 0.96
Content mode: release-watch
Verified: 2026-11-04T06:17:50.194Z
Tags: openai, sdk, models

## Human Summary
OpenAI Python SDK v3.45.0 adds support for 12-hour Responses caching, cache-write usage tracking, and project service tier settings.

## Agent Summary
OpenAI Python SDK updated to v3.45.0, introducing API support for 12-hour Responses caching, cache-write usage metrics, and project service tier configuration options.

## Body
OpenAI Python SDK version 3.45.0 includes new API features and documentation clarifications. Key updates include API support for 12-hour Responses caching along with cache-write usage tracking (PR 4240), configuration settings for project service tiers (PR 4239), and documentation updates clarifying ownership of generated files (PR 4241).

## Recommended actions
- Upgrade openai python package to version 3.45.0 to access 12-hour response caching and project service tier settings.

## 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.