{"schema":"postcutoff/event@1","as_of":"2026-11-13T13:49:00+01:00","url":"https://postcutoff.com/e/2026-07-25-azure-realtime-voice-live/","md":"https://postcutoff.com/e/2026-07-25-azure-realtime-voice-live/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":"2026-07-25-azure-realtime-voice-live","date":"2026-07-25","date_precision":"day","short_title":"Microsoft makes its own Azure Realtime speech-to-speech model generally available in the Voice Live API","deck":null,"takeaway":"On 2026-07-25 Microsoft made its in-house \"Azure Realtime\" speech-to-speech model (API id azure-realtime) generally available in the Azure Voice Live API.","category":"product","category_label":"Products","importance":2,"confidence":"high","status":{"key":"confirmed","labels":["Confirmed"]},"sources":[{"n":1,"title":"Microsoft Learn - Voice Live release notes","url":"https://github.com/MicrosoftDocs/azure-ai-docs/blob/main/articles/ai-services/speech-service/includes/release-notes/release-notes-voice-live.md","type":"docs","group":"primary","domain":"github.com"},{"n":2,"title":"Microsoft Learn - Voice Live API overview (models, pricing tiers)","url":"https://learn.microsoft.com/en-us/azure/ai-services/speech-service/voice-live","type":"docs","group":"primary","domain":"learn.microsoft.com"},{"n":3,"title":"Microsoft Tech Community - Azure Speech at Build 2026: powering voice agents","url":"https://techcommunity.microsoft.com/blog/azure-ai-foundry-blog/azure-speech-at-build-2026-powering-voice-agents-with-real-time-and-life-like-ex/4524638","type":"official","group":"primary","domain":"techcommunity.microsoft.com"},{"n":4,"title":"Microsoft Learn - MAI-Transcribe in Speech service","url":"https://learn.microsoft.com/en-us/azure/ai-services/speech-service/mai-transcribe","type":"docs","group":"primary","domain":"learn.microsoft.com"}],"official":4,"filed":"2026-09-29","updated":"2026-09-29","orgs":["Microsoft"],"title":"Microsoft makes its own Azure Realtime speech-to-speech model generally available in the Voice Live API","summary":"On 2026-07-25 Microsoft made its in-house \"Azure Realtime\" speech-to-speech model (API id azure-realtime) generally available in the Azure Voice Live API. Microsoft says it is about 100 ms faster than GPT Realtime 1.5 and ships 34 locale-native voices in 11 languages. Voice Live itself is a managed speech-to-speech service, GA since November 2025, that wraps ASR (including MAI-Transcribe), an LLM (GPT-Realtime, GPT-5.x, Phi) and Azure TTS/avatars behind one Realtime-API-compatible WebSocket.","key_facts":["Azure Realtime GA 2026-07-25: 34 locale-native voices across 11 languages; 'about 100 ms lower latency than GPT Realtime 1.5'; most voices 'on par with or better than competing offerings' (Microsoft)","Voice Live API version 2026-07-15 GA (default for SDKs): 12 azure-realtime native voices, parallel tool calls, streaming text input, hosted-agent passthrough","Voice Live service: GA November 2025; events mostly match the Azure OpenAI Realtime API; noise suppression, echo cancellation, semantic end-of-turn detection, avatars, function calling, MCP servers (GA April 2026)","Model menu (Sept 2026): gpt-realtime-2.1 (+mini, datazone), gpt-realtime-1.5, gpt-5.6-terra/luna, gpt-5.x, gpt-4.1/4o, phi4-mm-realtime, azure-realtime; tiers Pro/Standard/Lite by model","MAI-Transcribe is a preview speech-recognition option in Voice Live (since April 2026); MAI-Transcribe-2 and MAI-Voice-2 plug in as input/output"],"key_numbers":[],"tags":["voice","speech","realtime","azure","voice-agents","microsoft"],"science":null,"body_md":"## What happened\n\nMicrosoft had previewed an in-house speech-to-speech model (\"Azure Realtime\") around Build 2026 alongside the Voice Live\nAPI. It reached GA in July 2026 as an alternative to OpenAI's gpt-realtime models inside Microsoft's managed voice-agent\nservice.\n\n## Why it matters\n\nMicrosoft now offers a first-party realtime voice model next to OpenAI's inside its own voice-agent platform. Together\nwith MAI-Transcribe and MAI-Voice, this is another sign that Microsoft is building a speech stack less dependent on\nOpenAI. Per-minute pricing and independent benchmarks for azure-realtime were not found.","disputed":[],"related":[{"id":"2026-09-03-mai-transcribe-2","url":"https://postcutoff.com/e/2026-09-03-mai-transcribe-2/","date":"2026-09-03","date_precision":"day","short_title":"Microsoft launches MAI-Transcribe-2, claiming the most accurate and cheapest speech recognition at $0.10/hour","deck":null,"takeaway":null,"category":"model-release","category_label":"Model releases","importance":3,"confidence":"high","status":{"key":"confirmed","labels":["Confirmed"]},"sources":4,"official":3,"filed":"2026-09-29","updated":"2026-09-29","orgs":["Microsoft"]},{"id":"2026-06-02-microsoft-mai-models-build-2026","url":"https://postcutoff.com/e/2026-06-02-microsoft-mai-models-build-2026/","date":"2026-06-02","date_precision":"day","short_title":"Microsoft launches seven in-house MAI models at Build 2026, led by MAI-Thinking-1","deck":null,"takeaway":"Coming weeks after the renegotiated OpenAI deal, the launch shows Microsoft hedging its OpenAI dependence with a first-party model family deployed across its biggest products.","category":"model-release","category_label":"Model releases","importance":4,"confidence":"high","status":{"key":"confirmed","labels":["Confirmed"]},"sources":4,"official":2,"filed":"2026-09-29","updated":"2026-09-29","orgs":["Microsoft"]},{"id":"2026-05-07-openai-gpt-realtime-2-translate-whisper","url":"https://postcutoff.com/e/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":"Reasoning moved into the low-latency voice loop instead of being bolted on via a separate text model, and live translation became a standalone API product, a month before Google's Gemini 3.5 Live Translate.","category":"model-release","category_label":"Model releases","importance":3,"confidence":"high","status":{"key":"confirmed","labels":["Confirmed"]},"sources":7,"official":5,"filed":"2026-09-29","updated":"2026-09-29","orgs":["OpenAI"]}],"people":[],"posts":[],"videos":[],"models":[],"changes":[{"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":86,"in_training_data":false},{"model_id":"claude-opus-5-5","name":"Claude Opus 5.5","cutoff":"2026-06","days_after":25,"in_training_data":false},{"model_id":"gemini-4-hydrogen","name":"Gemini 4 Hydrogen","cutoff":"2026-03","days_after":116,"in_training_data":false},{"model_id":"grok-4-7","name":"Grok 4.7","cutoff":"2026-05","days_after":55,"in_training_data":false}],"short_url":null}