{"passport":{"slug":"whisper","display_name":"Whisper","model_type":"audio","parameter_count":"39M (tiny) to 1,550M (large); flagship large/large-v3 = 1,550M","context_window":"30-second audio chunks (architectural input limit)","claimed_developer":"OpenAI","confirmed_developer":"OpenAI","developer_confirmed_at":"2022-09-01T00:00:00+00:00","developer_source":"Confirmed via https://openai.com/index/whisper","first_appeared_at":"2026-03-04T12:31:27.35842+00:00","first_appeared_on":"rss_pipeline","status":"confirmed","availability":null,"deployment_status":"not_deployed","availability_scope":null,"gate":3,"eu_ai_act":"unknown","regulatory_status":{"eu_ai_act":"unknown"},"open_source":true,"weights_available":true,"license":"MIT","provenance_chain":[],"parent_model":null,"model_family":null,"superseded_by":null,"supersedes":[],"recommended_replacement":null,"product_links":null},"events":[{"event_type":"first_appearance","event_date":"2026-03-04T12:31:27.35842+00:00","title":"First recorded in AI news","detail":"OpenAI has trained and is open-sourcing a neural net called Whisper that approaches human level robustness and accuracy on English speech recognition.","source_url":"https://openai.com/index/whisper","source_name":"OpenAI Blog"}],"delta":{"days_unattributed":null,"claimed_developer":"OpenAI","confirmed_developer":"OpenAI","match":true}}