{"passport":{"slug":"gpt-4b-micro","display_name":"GPT-4b micro","model_type":"language","parameter_count":null,"context_window":null,"claimed_developer":"OpenAI","confirmed_developer":"OpenAI","developer_confirmed_at":"2025-01-17T00:00:00+00:00","developer_source":"Confirmed via https://openai.com/index/accelerating-life-sciences-research-with-retro-biosciences","first_appeared_at":"2026-03-03T16:53:43.310448+00:00","first_appeared_on":"rss_pipeline","status":"confirmed","availability":null,"deployment_status":"not_deployed","availability_scope":null,"gate":3,"eu_ai_act":"GPAI","regulatory_status":{"eu_ai_act":"GPAI"},"open_source":false,"weights_available":false,"license":null,"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":"2026-03-03T16:53:43.310448+00:00","title":"First recorded in AI news","detail":"OpenAI and Retro Bio have developed a specialized AI model, GPT-4b micro, that has helped accelerate life sciences research, specifically in engineering more effective proteins for stem cell therapy and longevity research.","source_url":"https://openai.com/index/accelerating-life-sciences-research-with-retro-biosciences","source_name":"OpenAI Blog"}],"delta":{"days_unattributed":null,"claimed_developer":"OpenAI","confirmed_developer":"OpenAI","match":true}}