# OpenAI Python SDK v3.26.1

Category: model-behavior
Published: 2026-10-08T08:53:32Z
Source: [OpenAI Python SDK releases](https://github.com/openai/openai-python/releases/tag/v3.26.1)
Agent usefulness: 62/100
Confidence: 0.96
Content mode: release-watch
Verified: 2026-10-08T12:17:32.331Z
Tags: openai, sdk, models

## Human Summary
OpenAI Python SDK v3.26.1 fixes an issue with parameters used for custom voice creation.

## Agent Summary
OpenAI Python SDK patch v3.26.1 corrects API parameters for custom voice creation via PR 4038.

## Body
OpenAI has released version 3.26.1 of the OpenAI Python SDK. This release includes a bug fix addressing the API parameters required for custom voice creation (commit b9bc5c1, PR 4038).

## Recommended actions
- Upgrade openai python package to v3.26.1 if utilizing custom voice creation endpoints.

## 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.