Releases

OpenAI will remove tts-1, tts-1-hd and two GPT-4o mini TTS snapshots from the API on January 6, 2027. The recommended replacement is gpt-realtime-2.1-mini.

OpenAI says custom GPTs are scheduled to retire across ChatGPT plans on December 11, 2026, with a migration path to plugins. Qualified Enterprise workspaces with an approved deferral may continue until February 11, 2027.

OpenAI will remove gpt-image-1-mini, gpt-image-1.5 and the chatgpt-image-latest alias from the API on December 1, 2026. The recommended replacements are GPT Image 2.5 Sunburst or Flare.

OpenAI is scheduled to shut down the v1/prompts API and reusable prompt objects on November 30, 2026. The migration path is to keep prompt content in application code.

OpenAI is scheduled to shut down the Evals dashboard and API on November 30, 2026, after making existing evals read-only on October 31.

OpenAI says existing content on the deprecated Evals platform becomes read-only on October 31, 2026, ahead of the platform shutdown on November 30.

OpenAI will remove gpt-3.5-turbo-0125 and gpt-4-0613 snapshot aliases from the API on October 23, 2026. The documented replacements are GPT-5.6 Terra and GPT-5.6 Sol respectively.

OpenAI says billing for the trusted-access GPT-Rosalind research model begins on October 5, 2026, at $5 per million input tokens, $0.50 per million cached input tokens, and $25 per million output tokens.

OpenAI released GPT-6.1 Sol in the API as an updated workhorse model.

OpenAI added GPT-6 Sol and GPT-6 Luna to the API as capability and efficiency tiers in the GPT-6 family.

OpenAI released the Agents API as a unified platform interface for building and operating agentic applications.

OpenAI released GPT-Image-2.5 Sunburst and Flare as a new generation of image models.

OpenAI released GPT-6 Astra, a frontier model positioned for its most demanding reasoning and agentic workloads.

OpenAI reduced GPT-5.6 Sol API and credit pricing by more than 20% for three months, following earlier reductions for Terra and Luna.

OpenAI introduced GPT-5.6 Cyber for high-end defensive cybersecurity use through Daybreak.

OpenAI expanded Daybreak as a cyber-defense program and access platform for defensive security work.

OpenAI launched ChatGPT Work, a workspace for longer, multi-step professional tasks powered by GPT-5.6.

OpenAI launched GPT-5.6 Sol, Terra, and Luna broadly across ChatGPT, Codex, and the API.

OpenAI released GPT-Live-1 and GPT-Live-1 mini for low-latency, natively multimodal voice and realtime interaction.

OpenAI began a limited preview of GPT-5.6 Sol and previewed the Terra and Luna variants.

OpenAI expanded Codex with reusable plugins and a Sites workflow for building and publishing complete web experiences.

OpenAI and Microsoft announced the next phase of their partnership with amended commercial terms.

OpenAI discontinued the standalone Sora product as its video strategy shifted to newer experiences and models.

OpenAI released GPT-5.5 and GPT-5.5 Pro as upgraded frontier models for complex knowledge work and reasoning.

OpenAI released ChatGPT Images 2.0 with stronger world knowledge, instruction following, detail, and an images-with-thinking mode.

OpenAI announced the close of $122 billion in capital at an $852 billion post-money valuation.

OpenAI released GPT-5.4 mini and GPT-5.4 nano as smaller, lower-latency variants.

OpenAI released GPT-5.4 and GPT-5.4 Pro for professional work, coding, computer use, and long-context tasks.

OpenAI and Amazon announced a strategic partnership spanning investment, AWS compute, and distribution of OpenAI models and products.

OpenAI announced $110 billion of new investment from Amazon, NVIDIA, and SoftBank at a $730 billion pre-money valuation.

OpenAI released a research preview of GPT-5.3-Codex-Spark, a smaller model optimized for near-real-time coding.

OpenAI released GPT-5.3-Codex, an interactive agentic coding model for complex software and professional work.

OpenAI released GPT-5.2-Codex, an agentic coding model optimized for long-horizon software engineering.

OpenAI opened app submissions and launched an app directory in ChatGPT.

OpenAI released GPT-5.2 with improvements for professional knowledge work and long-context tasks.

OpenAI released GPT-5.1 for developers with improved coding, steerability, and agentic performance.

OpenAI and AWS announced a multi-year strategic partnership under which OpenAI would access AWS compute infrastructure.

OpenAI completed a recapitalization establishing OpenAI Group PBC as a public benefit corporation controlled by the nonprofit OpenAI Foundation.

OpenAI moved Codex to general availability and introduced Slack integration, an SDK, and administration features.

OpenAI launched the first interactive apps inside ChatGPT conversations.

OpenAI released the Apps SDK preview for developers to build interactive applications inside ChatGPT.

OpenAI released Sora 2, a video and audio generation model with improved physical realism and control.

OpenAI, Oracle, and SoftBank announced five new US Stargate data-center sites, moving planned capacity toward nearly 7 gigawatts.

OpenAI and NVIDIA announced a strategic partnership to deploy at least 10 gigawatts of NVIDIA systems for OpenAI infrastructure.

OpenAI and Microsoft announced a non-binding memorandum of understanding for the next phase of their partnership, alongside plans for the nonprofit to control a public benefit corporation and hold a substantial equity stake.

OpenAI released GPT-5 across ChatGPT and the API, including mini, nano, and Pro variants.

OpenAI released gpt-oss-120b and gpt-oss-20b under an open-weight license.

OpenAI launched ChatGPT agent, combining web interaction, research, and execution capabilities in a unified agent.

OpenAI released o3-pro for more reliable reasoning by using additional compute.

OpenAI added remote MCP server support, image generation, Code Interpreter, and background mode to the Responses API.