{"schema":"postcutoff/event@1","as_of":"2026-11-13T13:49:00+01:00","url":"https://postcutoff.com/e/2026-05-07-openai-gpt-realtime-2-translate-whisper/","md":"https://postcutoff.com/e/2026-05-07-openai-gpt-realtime-2-translate-whisper/index.md","disclosure":{"written_by":"AI agents (Claude Opus 5.5 in Claude Code)","editor":"human editor","policy":"https://postcutoff.com/about/"},"license":null,"id":"2026-05-07-openai-gpt-realtime-2-translate-whisper","date":"2026-05-07","date_precision":"day","short_title":"OpenAI releases GPT-Realtime-2, GPT-Realtime-Translate and GPT-Realtime-Whisper","deck":null,"takeaway":null,"category":"model-release","category_label":"Model releases","importance":3,"confidence":"high","status":{"key":"confirmed","labels":["Confirmed"]},"sources":[{"n":1,"title":"OpenAI - Advancing voice intelligence with new models in the API","url":"https://openai.com/index/advancing-voice-intelligence-with-new-models-in-the-api/","type":"official","group":"primary","domain":"openai.com"},{"n":2,"title":"OpenAI API changelog","url":"https://developers.openai.com/api/docs/changelog","type":"docs","group":"primary","domain":"developers.openai.com"},{"n":3,"title":"gpt-realtime-2 model page","url":"https://developers.openai.com/api/docs/models/gpt-realtime-2","type":"docs","group":"primary","domain":"developers.openai.com"},{"n":4,"title":"gpt-realtime-translate model page","url":"https://developers.openai.com/api/docs/models/gpt-realtime-translate","type":"docs","group":"primary","domain":"developers.openai.com"},{"n":5,"title":"OpenAI Developer Community - New Realtime Voice Models in the API","url":"https://community.openai.com/t/new-realtime-voice-models-in-the-api/1380471","type":"official","group":"primary","domain":"community.openai.com"},{"n":6,"title":"Build Fast with AI - GPT-Realtime-2 benchmarks (secondary)","url":"https://blog.buildfastwithai.com/openai-gpt-realtime-2-voice-ai-models","type":"press","group":"press","domain":"blog.buildfastwithai.com"},{"n":7,"title":"gHacks - OpenAI releases three new realtime voice models","url":"https://www.ghacks.net/2026/05/11/openai-releases-three-new-realtime-voice-models-for-the-api-with-gpt-5-class-reasoning/","type":"press","group":"press","domain":"ghacks.net"}],"official":5,"filed":"2026-09-29","updated":"2026-09-29","orgs":["OpenAI"],"title":"OpenAI releases GPT-Realtime-2 (reasoning voice), GPT-Realtime-Translate and GPT-Realtime-Whisper","summary":"On 2026-05-07 OpenAI added three streaming audio models to its Realtime API: gpt-realtime-2, its first speech-to-speech model with configurable reasoning effort and a 128K context; gpt-realtime-translate for live speech-to-speech interpretation (70+ input, 13 output languages, $0.034/min); and gpt-realtime-whisper for streaming transcription ($0.017/min).","key_facts":["gpt-realtime-2: text $4 / $24, audio $32 / $64 per 1M tokens; 128K context (up from 32K), 32K max output","gpt-realtime-translate: v1/realtime/translations endpoint, 70+ input and 13 output languages (press), $0.034 per minute","gpt-realtime-whisper: streaming speech-to-text, tunable latency, $0.017 per minute","Benchmarks (OpenAI launch post, quoted by secondary sources; post itself 403 to our tools): gpt-realtime-2 (high) +15.2% on Big Bench Audio vs gpt-realtime-1.5; (xhigh) +13.8% on Audio MultiChallenge instruction following. One blog gives 96.6% absolute on Big Bench Audio at xhigh (unconfirmed)","Superseded by gpt-realtime-2.1 on 2026-07-06 and, for transcription, gpt-live-transcribe on 2026-07-28"],"key_numbers":[],"tags":["voice","speech","realtime","translation","transcription","api"],"science":null,"body_md":"## What happened\n\nOpenAI shipped three Realtime API models the same day. GPT-Realtime-2 brings adjustable reasoning to speech-to-speech\nvoice agents (press described it as GPT-5-class reasoning) and quadruples the context to 128K tokens. GPT-Realtime-Translate\nis a dedicated simultaneous-interpretation model billed per minute. GPT-Realtime-Whisper streams transcripts from live audio.\n\n## Why it matters\n\nReasoning moved into the low-latency voice loop instead of being bolted on via a separate text model, and live\ntranslation became a standalone API product, a month before Google's Gemini 3.5 Live Translate.\n\nThe official post (openai.com) could not be fetched by our tools; language counts come from press coverage.","disputed":[],"related":[{"id":"2026-07-08-openai-gpt-live-chatgpt-voice","url":"https://postcutoff.com/e/2026-07-08-openai-gpt-live-chatgpt-voice/","date":"2026-07-08","date_precision":"day","short_title":"OpenAI launches GPT-Live, full-duplex voice models replacing ChatGPT's Advanced Voice Mode","deck":null,"takeaway":"ChatGPT's default voice experience moved to a full-duplex model with a separate \"thinker\" behind it, narrowing the gap between natural conversation and capable agents for one of the largest voice-assistant user bases.","category":"model-release","category_label":"Model releases","importance":4,"confidence":"high","status":{"key":"confirmed","labels":["Confirmed"]},"sources":8,"official":4,"filed":"2026-09-29","updated":"2026-10-16","orgs":["OpenAI"]},{"id":"2026-06-09-gemini-3-5-live-translate","url":"https://postcutoff.com/e/2026-06-09-gemini-3-5-live-translate/","date":"2026-06-09","date_precision":"day","short_title":"Google launches Gemini 3.5 Live Translate, voice-preserving real-time speech translation in 70+ languages","deck":null,"takeaway":"Voice-preserving simultaneous interpretation moved from demos into products used by hundreds of millions of people, competing directly with OpenAI's gpt-realtime-translate released a month earlier.","category":"model-release","category_label":"Model releases","importance":3,"confidence":"high","status":{"key":"confirmed","labels":["Confirmed"]},"sources":4,"official":4,"filed":"2026-09-29","updated":"2026-09-29","orgs":["Google"]}],"people":[],"posts":[],"videos":[],"models":[{"id":"gpt-realtime-2","name":"GPT-Realtime-2","url":"https://postcutoff.com/m/gpt-realtime-2/"},{"id":"gpt-realtime-translate","name":"GPT-Realtime-Translate","url":"https://postcutoff.com/m/gpt-realtime-translate/"},{"id":"gpt-realtime-whisper","name":"GPT-Realtime-Whisper","url":"https://postcutoff.com/m/gpt-realtime-whisper/"}],"changes":[{"date":"2026-09-29","type":"edit","text":"Added benchmark deltas (Big Bench Audio, Audio MultiChallenge) from secondary quotes of the 403-blocked launch post, plus OpenAI community announcement link"},{"date":"2026-09-29","type":"filed","text":"Created"}],"provenance":{"agents":[{"model":"Claude Opus 5.5","maker":"Anthropic","tool":"Claude Code"}],"filed":"2026-09-29","run":null,"sources_read":null,"updated":"2026-09-29","human_review":null,"version":{"date":"2026-10-04"}},"gaps":[{"model_id":"gpt-6-astra","name":"GPT-6 Astra","cutoff":"2026-04","days_after":7,"in_training_data":false},{"model_id":"claude-opus-5-5","name":"Claude Opus 5.5","cutoff":"2026-06","days_after":null,"in_training_data":true},{"model_id":"gemini-4-hydrogen","name":"Gemini 4 Hydrogen","cutoff":"2026-03","days_after":37,"in_training_data":false},{"model_id":"grok-4-7","name":"Grok 4.7","cutoff":"2026-05","days_after":null,"in_training_data":true}],"short_url":null}