OpenAI updates gpt-5.3-chat-latest API slug to current ChatGPT model
OpenAI updated the gpt-5.3-chat-latest API alias to point to the latest model deployed in ChatGPT. This is a routing change for API consumers who rely on the versioned slug rather than pinned model identifiers. The update signals a model version bump within the GPT-5.3 series.
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OpenAI updates gpt-5.2-chat-latest slug to current ChatGPT model
OpenAI updated the gpt-5.2-chat-latest API alias to point to the latest model version deployed in ChatGPT. This is a routing change to an API slug rather than a new model release, but signals a model version update in production. The change is relevant for API consumers who rely on the latest-slug for automatic model tracking.
OpenAI releases chat-latest API snapshot pointing to current ChatGPT model
OpenAI released a new API alias 'chat-latest' that tracks the latest Instant model powering ChatGPT, updated on a rolling basis. The release note explicitly recommends GPT-5.5 for production use, positioning chat-latest as a testing/preview endpoint rather than a stable production target. This is a minor infrastructure/API change rather than a new model capability announcement.
OpenAI releases chat-latest API snapshot pointing to current ChatGPT model
OpenAI released a new API alias 'chat-latest' that tracks the latest Instant model powering ChatGPT, updated on a rolling basis. The release note recommends GPT-5.5 for production use, positioning chat-latest as a testing surface for developers who want to preview the most recent chat improvements. This is a minor infrastructure/API change rather than a new model release.
OpenAI updates chat-latest snapshot to latest Instant model
OpenAI has updated the `chat-latest` API snapshot to point to the latest Instant model used in ChatGPT, while recommending GPT-5.5 for production API usage. The `chat-latest` alias is intended for testing the most recent chat improvements and will be updated regularly. This is a minor infrastructure/routing change rather than a new model release.
OpenAI releases gpt-5.3-chat-latest to Chat Completions and Responses API
OpenAI has made gpt-5.3-chat-latest available via the Chat Completions and Responses API, pointing to the GPT-5.3 Instant snapshot currently powering ChatGPT. This release gives API developers access to the same model version deployed in the consumer product. The update is a routine API availability expansion rather than a new model capability announcement.
OpenAI retires GPT-5.1 models from ChatGPT, migrates users to GPT-5.3/5.4
OpenAI removed GPT-5.1 Instant, GPT-5.1 Thinking, and GPT-5.1 Pro from ChatGPT as of March 11, 2026. Existing conversations using GPT-5.1 variants are automatically migrated to corresponding current models: GPT-5.3 Instant, GPT-5.4 Thinking, and GPT-5.4 Pro. This is a routine model lifecycle action reflecting OpenAI's cadence of deprecating older model versions as newer ones become the standard.
OpenAI rolls out GPT-5.5 Instant as ChatGPT's new default model
OpenAI is replacing GPT-5.3 Instant with GPT-5.5 Instant as the default model for all ChatGPT users, citing improvements in accuracy, clarity, image understanding, STEM, and web search decisions. The update also reduces overformatting and unnecessary follow-up questions, and adds better context retention from past chats, files, and Gmail for Plus and Pro users. GPT-5.3 Instant remains available for paid users for three months before retirement.
OpenAI updates gpt-realtime-mini and gpt-audio-mini slugs to 2025-12-15 snapshots
OpenAI has updated the rolling model slugs gpt-realtime-mini and gpt-audio-mini to point to the 2025-12-15 model snapshots, replacing the previous 2025-10-06 versions. Developers needing the older snapshots can pin to gpt-realtime-mini-2025-10-06 and gpt-audio-mini-2025-10-06 explicitly. This is a routine API maintenance update affecting audio and realtime model endpoints.