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LLM Index

Kimi vs. Orca

A side-by-side comparison of release history, capabilities, licensing and model sizes.

Attribute Kimi Orca
Developer Moonshot AI Microsoft
Current generation Kimi K3 –
Initial release 2023-10-09 2023-06-05
Instruct tuned Yes Yes
Coding Yes No
Finetuning Yes Yes
Open source Yes Yes
License Kimi K3 License Noncommercial
Model sizes 2.8T (104B active) 13B
Links
Website Pricing
Website

Kimi

Kimi is Moonshot AI's open-weight family for long-context reasoning, coding, multimodal agents, and research. Kimi K3 is the current generation.

Moonshot AI launched Kimi in 2023 with an early focus on long-context document understanding. Kimi K3, released in July 2026, is a 2.8T-parameter mixture-of-experts model with 104B active parameters. It combines native vision, a one-million-token context window, long-horizon coding, knowledge work, reasoning, and agent orchestration. The full model weights are available under the Kimi K3 License.

Further reading

Orca

Orca is a descendant of LLaMA developed by Microsoft with finetuning on explanation traces obtained from GPT-4.

Orca-13B is a LLM developed by Microsoft. It is based on LLaMA with finetuning on complex explanation traces obtained from GPT-4. By using rich signals, Orca surpasses the performance of models such as Vicuna-13B on complex tasks. However, given its model backbone and the data used for its finetuning, Orca is under noncommercial use.

Further reading

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