API

GPT-5.6 Sol input tokens drop to $4 per million (20% lower) and output tokens to $20 per million (33% lower). Promotional pricing holds at least through November 21, 2026.

API customers can now choose regional processing for individual requests using a prefixed domain with an API key from a project set to Global geography. Existing eligibility, data retention, endpoint, and model support requirements still apply.

The new Prompt Caching dashboard on the OpenAI API platform lets you track cache hit rate over time, reads per write, and the breakdown of cache-read, cache-write, and uncached tokens, with filters by model and service tier.

Transparent backgrounds are now available in preview for gpt-image-2 in the Images API and the Responses API image generation tool. Set background to transparent with png or webp output; jpeg does not support it.

Announced Ultrafast mode, a new API service tier for GPT-5.6 Sol that runs up to 14x faster than Standard processing. Available in limited preview to select customers.

Daybreak now offers two access tiers for approved defenders: Daybreak Blue and Daybreak Red. Use them to move from security findings to validated fixes in explicitly authorized engagements.

Updated the chat-latest snapshot, which points to the latest model available in ChatGPT for Plus and Pro users. Recommended to leverage GPT-5.6 Sol for production API usage. The underlying model snapshot will be regularly updated. [Learn…

Fast mode now supports long-context requests for GPT-5.6 Sol, GPT-5.6 Terra, and GPT-5.6 Luna. Long-context prompts exceeding 272K tokens can run in Fast mode, delivering speeds up to 2.5× faster than the Standard tier. See [pricing…

Customers can now filter and group data by API key in the Usage and Costs dashboards. The Usage API and Costs API also support the API key dimension for programmatic reporting and analysis. Visit the [Usage and Costs…

Starting July 30, GPT-5.6 Luna costs 80% less, while GPT-5.6 Terra costs 20% less. See pricing details.

Released the official OpenAI Terraform provider for managing OpenAI API Platform resources as infrastructure as code.

Released GPT Transcribe for accurate file transcription and final transcripts of committed Realtime turns, and GPT Live Transcribe for low-latency…

Added hard spend limits for organizations and projects on the OpenAI API platform. Set a monthly cap that causes affected API requests to return a 429 error when tracked spend reaches the limit. Use spend alerts for notification before traffic is interrupted. Read more in the…

Released the GPT-5.6 model family, including GPT-5.6 Sol for frontier capability, GPT-5.6 Terra for a balance of intelligence and cost, and GPT-5.6 Luna for efficient, high-volume workloads. The gpt-5.6 alias routes…

Released GPT-Realtime-2.1, an updated realtime reasoning model with improved alphanumeric recognition, silence and noise handling, and interruption behavior. Also released [GPT-Realtime-2.1…

Released the Safety Usage Dashboard on the OpenAI API platform. The Safety dashboard shows blocked Responses requests based on safety_identifier values sent on requests to identify end users. Visit the Safety dashboard.

Web search can now return image results alongside regular text results. Use image search when your application needs current or web-grounded visuals, such as product photos, landmarks, places, events, or visual references. Read more in the [web search…

Released a redesigned navigation for the OpenAI API platform. Visit here.

Added moderation scores to the Responses API and Chat Completions API. Pass a moderation object in a generation request to receive moderation results for both the model input and generated output in the same response. Learn more in the [Moderation…

Announced the deprecation of reusable prompt objects, the Evals platform, and Agent Builder. See the deprecations page for shutdown timelines and migration guidance.