{"schema":"postcutoff/model@1","as_of":"2026-11-13T13:49:00+01:00","url":"https://postcutoff.com/m/gpt-realtime-1-5/","md":"https://postcutoff.com/m/gpt-realtime-1-5/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":"gpt-realtime-1-5","name":"GPT-Realtime-1.5","org":"OpenAI","family":"GPT Realtime","released":"2026-02-23","status":"legacy","type":"audio/speech","modality_in":["text","audio","image"],"modality_out":["text","audio"],"open_weights":false,"model_license":"proprietary","context_window":32000,"max_output":4096,"knowledge_cutoff":"2024-09","pricing":{"text_input":4,"text_output":16,"audio_input":32,"audio_output":64,"cached_input":0.4,"image_input":5,"unit":"per 1M tokens (USD)","source":"https://developers.openai.com/api/docs/pricing"},"price_line":"$4 text in, $16 text out per 1M tokens","access":[{"provider":"OpenAI API","model_id":"gpt-realtime-1.5","endpoint":"wss://api.openai.com/v1/realtime","docs":"https://developers.openai.com/api/docs/models/gpt-realtime-1.5"}],"capabilities":[{"name":"Non-reasoning voice agent model","detail":"Speech-to-speech model for voice agents and customer support with function calling and prompt caching; cheaper text output ($16 vs $24/1M) than the reasoning gpt-realtime-2.x models.","first":false,"discovered":"launch","source":"https://developers.openai.com/api/docs/models/gpt-realtime-1.5"}],"entry":null,"notes":"Released 2026-02-23 alongside gpt-audio-1.5 (Chat Completions). Docs still call it 'our flagship audio model for voice agents', but gpt-realtime-2 (May 2026) and gpt-realtime-2.1 (July 2026) supersede it; not deprecated as of 2026-09-29. It is the named replacement for the gpt-4o-realtime-preview models shut down 2026-05-12.","verified":"2026-09-29","body_md":"Sources:\n- https://developers.openai.com/api/docs/models/gpt-realtime-1.5\n- https://developers.openai.com/api/docs/pricing\n- https://developers.openai.com/api/docs/changelog\n- https://developers.openai.com/api/docs/deprecations","page_url":"https://postcutoff.com/m/gpt-realtime-1-5/","standing":{"kind":"speech and audio","newer_count":65,"newer":[{"id":"nemotron-3-5-transcribe","name":"NVIDIA Nemotron 3.5 Transcribe (30B-A4B)","org":"NVIDIA","released":"2026-10-28","page_url":"https://postcutoff.com/m/nemotron-3-5-transcribe/"},{"id":"hy-simulmt-30b-a3b","name":"Hy-SimulMT-30B-A3B","org":"Tencent","released":"2026-10-22","page_url":"https://postcutoff.com/m/hy-simulmt-30b-a3b/"},{"id":"eleven-realtime-v1-max","name":"Eleven Realtime v1 Max / Mini","org":"ElevenLabs","released":"2026-10-20","page_url":"https://postcutoff.com/m/eleven-realtime-v1-max/"},{"id":"voxtral-mini-transcribe-3","name":"Voxtral Mini Transcribe 3 (+ Mini Transcribe Realtime 3)","org":"Mistral AI","released":"2026-10-20","page_url":"https://postcutoff.com/m/voxtral-mini-transcribe-3/"},{"id":"voxtral-small-transcribe-3","name":"Voxtral Small Transcribe 3","org":"Mistral AI","released":"2026-10-20","page_url":"https://postcutoff.com/m/voxtral-small-transcribe-3/"}],"before":{"id":"gpt-realtime","name":"GPT-Realtime and GPT-Realtime mini","org":"OpenAI","released":"2025-08-28","page_url":"https://postcutoff.com/m/gpt-realtime/"},"after":{"id":"gpt-realtime-whisper","name":"GPT-Realtime-Whisper","org":"OpenAI","released":"2026-05-07","page_url":"https://postcutoff.com/m/gpt-realtime-whisper/"},"weights":"closed","licence":"proprietary","licence_permissive":false,"summary":"Closed weights; access is hosted only."}}