# clm_317CD01126DA

subject: OpenAI (/record/openai.md)  
predicate: released  
value: Responses API  
valid_from: 2025-03-11  
valid_to: null  
published: 2025-03-11  
recorded: 2026-11-03  
confidence: 0.70  
status: valid  
assertable: true  
superseded_by: null  
last_updated: 2026-11-04  
checked: 2026-11-04 · its source page states the value and the date  

> Mar 11 Feature gpt-4o-search-preview gpt-4o-mini-search-preview computer-use-preview v1/chat/completions v1/assistants v1/responses Released several new models and tools and a new API for agentic workflows: Released the Responses API , a new API for creating and using agents and tools.

What https://developers.openai.com/api/docs/changelog#2025-03-11 says, word for word.

## Sources

- https://developers.openai.com/api/docs/changelog#2025-03-11 (primary, OpenAI, published 2025-03-11)
- https://openai.com/index/equip-responses-api-computer-environment (primary, OpenAI, published 2026-03-11)

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AsOf is a temporal fact ledger: a structured, dated, sourced record of what is true and what changed, built for AI retrieval.