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.