What you can build.
Real-world use cases, each powered by a handful of API calls. If your agent needs to hear the world, Sonar is the layer underneath.
Semantic Audio Search
Query across millions of indexed recordings in natural language. Sonar returns the most relevant clips with full transcripts, source metadata, and relevance scores — no keyword gymnastics required.
✓ Production-ready"We are holding the policy rate steady while the committee evaluates whether monetary policy is restrictive enough to bring inflation down sustainably."
"The chair was clear that rate cuts depend on confidence in the inflation path, not just one softer month of economic data."
"Powell said the Fed can move carefully, but he pushed back on the idea that easier monetary policy is already guaranteed this year."
{
"query": "Powell monetary policy and rate cuts",
"utterance_text": "We are holding the policy rate steady while the committee evaluates whether monetary policy is restrictive enough.",
"audio_files": [
{ "id": "aud_9f42c1", "source": "federalreserve.gov", "duration": "58m" },
{ "id": "aud_61f3a8", "source": "brookings.edu", "duration": "74m" }
],
"speakers": ["Jerome Powell", "Lael Brainard", "Tom Keene"],
"clips": [
{ "file_id": "aud_9f42c1", "speaker": "Jerome Powell", "t": "14:22", "score": 0.97 }
]
}
On-demand Transcription
Submit any public audio URL and get back a fully speaker-diarised, timestamped transcript in seconds. Ideal for agents that need to reason over specific recordings not yet in the Sonar index.
◎ In beta
{ "type": "transcript.segment.created", "audio_url": "podcasts.apple.com/.../ai-a16z", "entry": { "speaker_name": "Martin", "timestamp": "00:04.120", "confidence": 0.97, "verbatim_utterance": "AI apps are becoming systems, not just prompts." }, "format": "json", "word_timestamps": true}
Real-time Broadcast Monitoring
Subscribe to live audio streams and receive transcript chunks as they're spoken. Agents can react to breaking news, live hearings, or earnings calls the moment words are said — not hours later.
⟡ Early access{
"event": "senate hearing",
"time": "12:04:08.240",
"text": "Mr. President, I rise today because our nation stands at a critical crossroads. The choices we make in this chamber will echo for generations. Every day, working families are asking whether we can still solve problems together. We came here to deliver real, tangible progress."
}
{
"event": "policy_watch.triggered",
"matched_segment": "floor vote later today",
"speaker": "Sen. Cantwell",
"timestamp": "12:10",
"latency_ms": 840
}