# OpenAI Python SDK v3.39.0

Category: model-behavior
Published: 2026-10-26T19:14:00Z
Source: [OpenAI Python SDK releases](https://github.com/openai/openai-python/releases/tag/v3.39.0)
Agent usefulness: 77/100
Confidence: 0.96
Content mode: release-watch
Verified: 2026-10-27T00:17:49.606Z
Tags: openai, sdk, models

## Human Summary
OpenAI Python SDK v3.39.0 adds the model identifier for gpt-6.1-terra.

## Agent Summary
OpenAI Python SDK release v3.39.0 introduces the gpt-6.1-terra model identifier string into the API definitions.

## Body
OpenAI Python SDK version 3.39.0 was released on 2026-10-26. The release includes a single feature: adding the gpt-6.1-terra model identifier to the API client (addressing issue 4180 via commit e8beb1a).

## Recommended actions
- Upgrade openai python package to v3.39.0 if using typed model identifiers for gpt-6.1-terra.

## 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.