OpenAI updates gpt-4o-mini-tts and gpt-4o-mini-transcribe slugs to 2025-12-15 snapshots
OpenAI has updated the floating model slugs for gpt-4o-mini-tts and gpt-4o-mini-transcribe to point to their 2025-12-15 snapshots, with the previous March 2025 snapshots remaining accessible via versioned identifiers. Notably, OpenAI now recommends gpt-4o-mini-transcribe over gpt-4o-transcribe for best transcription results, signaling a quality improvement in the mini-tier audio model.
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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.
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 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.
OpenAI releases gpt-realtime-1.5 and gpt-audio-1.5 to production APIs
OpenAI has released gpt-realtime-1.5 to the Realtime API and gpt-audio-1.5 to the Chat Completions API. These are incremental model updates to OpenAI's audio and real-time speech capabilities. The release expands developer access to updated audio-capable models through existing API surfaces.
OpenAI retires GPT-4o, GPT-4.1, o4-mini, and GPT-5 variants from ChatGPT
OpenAI has retired GPT-4o, GPT-4.1, GPT-4.1 mini, OpenAI o4-mini, and both GPT-5 Instant and GPT-5 Thinking from ChatGPT as of February 13, 2026. The retirements were previously announced and affect only the ChatGPT product; no API changes are included at this time. This marks a significant generational turnover in OpenAI's publicly accessible model lineup.
OpenAI retiring GPT-4o, GPT-4.1, and o4-mini from ChatGPT on February 13, 2026
OpenAI announced that GPT-4o, GPT-4.1, GPT-4.1 mini, and OpenAI o4-mini will be retired from ChatGPT on February 13, 2026, alongside the previously announced retirement of GPT-5 Instant and Thinking. The API is unaffected by these changes at this time. The move signals continued consolidation of OpenAI's model lineup in the ChatGPT product as newer flagship models supersede older ones.
OpenAI Updates Audio Models That Reason, Transcribe, and Translate
OpenAI introduced three new audio models in its Realtime API: GPT-Realtime-2 (speech-to-speech with five configurable reasoning effort levels), GPT-Realtime-Translate (70+ input languages), and GPT-Realtime-Whisper (transcription). GPT-Realtime-2 operates as an end-to-end audio model including reasoning, with latency ranging from 1.12 seconds at minimal effort to 2.33 seconds at high effort. Benchmark results are mixed: it leads Scale AI's Audio MultiChallenge and Artificial Analysis Conversational Dynamics but trails Step-Audio R1.1 Realtime and Grok Voice Think Fast 1.0 on speech reasoning and agentic tasks. The configurable reasoning-latency tradeoff is positioned as a key differentiator for voice agent applications.
OpenAI Retiring GPT-4o, GPT-4.1, GPT-4.1 mini, and o4-mini from ChatGPT in February 2026
OpenAI announced that on February 13, 2026, it will retire GPT-4o, GPT-4.1, GPT-4.1 mini, and o4-mini from ChatGPT, alongside the previously announced retirement of GPT-5 variants (Instant, Thinking, and Pro). The retirements apply only to the ChatGPT product interface; API access to these models is unaffected at this time. This signals a consolidation of the ChatGPT model lineup, likely in favor of newer or more capable successors.