Release dates
— Moonshot launched Kimi K3.1 Pro as the first model in the K3.1 series, available on Kimi products, mobile apps, Kimi Work, Kimi Code, and the Kimi API; full weights are promised by Nov 4. ↗
Kimi K3.1 Pro
The first model in Moonshot’s K3.1 series and a post-trained version of Kimi K3, with a 1M context and visual input. It is available through Kimi products and API; full weights are not yet released.
Official API model ID: `kimi-k3.1-pro`. Kimi K3.1 Pro is available on Kimi.com, the Kimi mobile apps, Kimi Work, Kimi Code, and the Kimi API. `kimi-k3.1-pro-highspeed` is the originator’s faster serving variant (about 2–3× speed), not a separate model record. Full weights are planned by 2026-11-04 and were not yet available at verification time.
MODEL NUMBER043
- First public date
- 2026-10-24
- Organization
- Moonshot AI
- Family
- Kimi
01
Specifications
Only published specifications are shown.
02
Overview
Why it mattered
Moonshot identifies K3.1 Pro as the first in the K3.1 series, with substantially more post-training compute and improvements in coding, 3D creation, financial research, and agentic work. It is a distinct major successor to Kimi K3. Moonshot says full weights will arrive by 2026-11-04, so current availability is hosted product/API access, not a completed open-weight release. Performance claims are vendor-reported.
PreviousKimi K32.8T · 1.05M ctx
CurrentKimi K3.1 Pro— · 1M ctx
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Architecture & capabilities
Model capabilities
Native visionLong-horizon agentCodingReasoningTool use
05
Release history
Moonshot launched Kimi K3.1 Pro as the first model in the K3.1 series, available on Kimi products, mobile apps, Kimi Work, Kimi Code, and the Kimi API; full weights are promised by Nov 4.
View source06
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07
Sources
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