Expired85% confidenceEventTime unknown
OpenAI officially announced O3 and O3-mini for the first time on December 20, 2024, on the final day of its 12-day consecutive launch event.
1
Sources
85%
Confidence
Long-term
Relevance
6/1/2026
First Seen
Valid until: 8/30/2026(expired)
Sources
Related Entities
Related Claims
UnverifiedOn February 13, 2025, OpenAI announced the cancellation of the full O3 release, stating it was too complex to meet user expectations.66% similarPartially VerifiedO4 Mini is a reasoning-optimized model launched by OpenAI in 2025 and belongs to the O series.66% similarUnverifiedOpenAI independently launched the "o-series" in 2024, specifically targeting scenarios that require multi-step reasoning such as math competitions and code debugging.62% similarUnverifiedOpenAI o1于2024年9月发布，标志着CoT从提示技术升级为训练范式61% similar
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