Phi-3.5

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Lifecycle
Milestone or variant
Related model
Source event
AI Radar coverage
Only month or year known
8 events

2024

2025

2026

As of 10 October 2026

Announced +1Lifecycle · 22 Aug 2024

ReleasedLifecycle · Aug 2024

Retired from Microsoft FoundryMilestone · 30 Aug 2025

Predecessor Phi-3Lineage · 23 Apr 2024

Successor Phi-4Lineage · 12 Dec 2024

Successor Phi-4-miniLineage · 26 Feb 2025

Derived Phi-mini-MoELineage · 23 Jun 2025

All events, in order

23 April 2024 Lineage Predecessor Phi-3
August 2024 Lifecycle Released
22 August 2024 Lifecycle Announced
22 August 2024 Source Blog post published
12 December 2024 Lineage Successor Phi-4
26 February 2025 Lineage Successor Phi-4-mini
23 June 2025 Lineage Derived Phi-mini-MoE
30 August 2025 Milestone Retired from Microsoft Foundry

← The full record of Phi-3.5, with every claim and its sources