OpenAI Python SDK v3.10.0 Adds Support for GPT Image 2.5 and API Key Expiration Fields

OpenAI Ships Python SDK v3.10.0 With GPT Image 2.5 Support

OpenAI released version 3.10.0 of its official Python client library on September 8, 2026, adding programmatic support for GPT Image 2.5 models and new image generation options, according to the release notes published on GitHub.

The update also introduces expiration fields for service-account API keys, giving developers a way to set and track when service-account credentials expire.

What Changed

The release notes list two feature additions:

• GPT Image 2.5 support: The SDK now exposes GPT Image 2.5 models and associated image generation options through the api module, per pull request #3824. No further technical detail — such as resolution limits, pricing, or benchmark scores — is included in the release notes.
• Service-account API key expiration fields: Pull request #3802 adds fields that let developers see and manage expiration dates on service-account API keys, a change aimed at credential lifecycle management rather than model behavior.

This is a client library changelog, not a model announcement. OpenAI has not published a separate model card, pricing sheet, or benchmark results for GPT Image 2.5 alongside this SDK release. The full technical specification of GPT Image 2.5 — including context handling for image inputs, output formats, and cost per generation — remains undisclosed in the material reviewed for this release.

Confirmed vs. Unconfirmed

Confirmed: the SDK version bump to 3.10.0, the addition of GPT Image 2.5-related API bindings, and new service-account key expiration fields.

Unconfirmed: any performance claims, pricing, or capability details for GPT Image 2.5 itself, since none appear in this changelog. Readers should treat GPT Image 2.5 as a model that now has client-side plumbing in the Python SDK, not as a model with a documented public specification as of this release.

What This Means

SDK updates like this typically precede or accompany broader model rollouts — adding client bindings is often the first visible signal that a new model is moving toward general availability. The appearance of GPT Image 2.5 in the openai-python library suggests OpenAI is preparing to expose the model more broadly via the API, but until OpenAI publishes pricing, a model card, or benchmark data, developers should treat this as infrastructure groundwork rather than a full product launch. The service-account expiration fields are a smaller, operational change aimed at enterprise credential management rather than model capability.