Moonshot releases Kimi K3, a 2.8T-parameter model with new commercial-use restrictions
The open-weight release includes a 1.56TB download and stricter licensing for large 'Model as a Service' providers.
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- Moonshot released Kimi K3, a 2.8 trillion parameter model available as open weights on Hugging Face.
- The model's 1.56TB download is hosted on Hugging Face.
- Kimi K3's license removes the 'modified MIT' label and adds a new clause requiring a separate agreement for Model as a Service businesses exceeding $20M annual revenue.
- OpenRouter lists K3 from seven providers at $3 per million input tokens and $15 per million output tokens.
Moonshot released the weights for Kimi K3, a 2.8 trillion parameter model, as promised earlier in July 2026. The model is distributed as open weights via Hugging Face, where the download size is listed as 1.56TB.
The Kimi K3 license departs from the earlier 'modified MIT' branding used for K2. The new license requires a separate agreement with Moonshot for any entity operating a Model as a Service business whose aggregate revenue exceeds $20 million over any consecutive 12 months.
Moonshot distinguishes its licensing approach from open source terminology, instead using the term 'open weight' to describe the release. This framing underscores the company's stance on permissible uses and commercial restrictions.
OpenRouter began offering K3 through seven providers, with pricing aligned to Moonshot's own rates of $3 per million input tokens and $15 per million output tokens.
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