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公式情報源から取得した更新履歴を、新しい順に。気になるサービスの変化を確かめましょう。

OpenAI API

Feature

Released Enterprise Key Management (EKM). Enterprise Key Management (EKM) allows you to encrypt your customer content at OpenAI using keys managed by your own external Key Management System (KMS).

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OpenAI API

Feature / gpt-5-pro / gpt-realtime-mini / gpt-audio-mini / gpt-image-1-mini / sora-2 / sora-2-pro / v1/responses / v1/batch / v1/chat/completions / v1/videos / v1/realtime / v1/images/generations

Released several new features at OpenAI DevDay: Released GPT-5 Pro, a version of GPT-5 that uses more compute to think harder and provide consistently better answers. Released GPT-Realtime mini and gpt-audio-mini for more cost-efficient speech to speech performance. Released gpt-image-1-mini for more cost-efficient image generation and editing. Launched v1/videos for rich, detailed, and dynamic video generation and remixing with our latest Sora 2 and Sora 2 Pro models. Launched Agent Builder for visually creating custom multi-agent workflows. Launched ChatKit, an embeddable chat interface for deploying agents. Released Trace Evals, Datasets, and Prompt Optimization tools. Evals: Released Third-Party Model Support. Launched Service health dashboard.

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OpenAI API

Feature / gpt-5-codex / v1/responses

Launched special-purpose model gpt-5-codex, built and optimized for use with the Codex CLI.

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OpenAI API

Feature / v1/responses

Added support for connectors to the Responses API. Connectors are OpenAI-maintained MCP wrappers for popular services like Google apps, Dropbox, and more that can be used to give model read access to data stored in those services.

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OpenAI API

Feature / v1/conversations / v1/responses / v1/assistants

Released the Conversations API, which allows you to create and manage long-running conversations with the Responses API. See the migration guide to see a side-by-side comparison and learn how to migrate from an Assistants API integration to Responses and Conversations.

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OpenAI API

Feature / v1/chat/completions / v1/responses

Released GPT-5 family of models in the API, including gpt-5, gpt-5-mini, and gpt-5-nano. Introduced the minimal reasoning effort value to optimize for fast responses in GPT-5 models (which support reasoning). Introduced custom tool call type, which allows for freeform inputs to and outputs from the model when tool calling.

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OpenAI API

Feature

Launched support for Priority processing. Priority processing delivers significantly lower and more consistent latency compared to Standard processing while keeping pay-as-you-go flexibility.

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OpenAI API

Feature / o3-deep-research / o3-deep-research-2025-06-26 / o4-mini-deep-research / o4-mini-deep-research-2025-06-26 / v1/responses

Released o3-deep-research and o4-mini-deep-research, deep research variants of our o-series reasoning models optimized for deep analysis and research tasks. Learn more in the deep research guide. Added support for async event handling with webhooks. Reduced and simplified pricing for the web search tool. Added support for the web search tool.

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