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From today, Moonshot no longer offers its Kimi K2 series to newly registered accounts, and it plans to retire all K2 models by the end of December, its developer documentation says.
Existing users are unaffected for now and are pointed to Kimi K3.1 Pro.
K2 was the model that put Moonshot on the map in July 2025; the company is retiring it from its API while its successor's are still promised by November 4th.
Moonshot closes its Kimi K2 models to new users and will retire them by the end of December
From today, Moonshot no longer offers its Kimi K2 series to newly registered API accounts, and it plans to retire all K2 models by the end of December, its developer documentation says. Existing users are unaffected for now and are pointed to Kimi K3.1 Pro. K2 was the open-weight model that put Moonshot on the map in July 2025; the company is retiring it from its API while its successor's weights are still promised by November 4th. SourcesAC
Sources
- AKimi API models and deprecation notice (Moonshot)platform.kimi.ai
- CKimi K2 retirement: 2026-10-31 and end of 2026 (qcode.cc)qcode.cc
This story ran in the Afternoon Brief of October 31st 2026.