ARTFEED — Contemporary Art Intelligence

OpenAI-backed legal tech firm Harvey pivots to Chinese Kimi K3 open-weight model

ai-technology · 2026-08-26

On Thursday, Harvey, a legal tech company located in San Francisco and supported by OpenAI, Sequoia Capital, and Andreessen Horowitz, revealed its latest model, Harvey Tenet, which has been post-trained using the open-weight Kimi K3 base. The firm asserts that this new system delivers 'state-of-the-art' outcomes in intricate legal tasks. This development underscores a trend among Western tech companies that are leveraging Chinese open-weight models to cut down on development expenses and enhance precision. AI policy researcher Simon Hedlin remarked on social media that Harvey's initiative exemplifies how open-weight models allow developers to fine-tune systems with industry-specific data. This post-training process involves enhancing a general model with specialized datasets to perform particular functions more effectively.

Key facts

  • Harvey, a San Francisco-based legal tech provider, announced its new model Harvey Tenet on Thursday.
  • Harvey Tenet was post-trained on top of the open-weight Kimi K3 base.
  • Harvey's backers include OpenAI, Sequoia Capital, and Andreessen Horowitz.
  • Harvey claims the system achieved 'state-of-the-art' performance in complex legal work.
  • AI policy researcher Simon Hedlin praised the move as an example of open-weight models enabling post-training for specific data.
  • Post-training is the process of refining a general-purpose base model with specialized data sets.
  • There is a growing shift by Western tech firms towards Chinese open-weight systems amid soaring development costs.

Entities

Institutions

  • Harvey
  • OpenAI
  • Sequoia Capital
  • Andreessen Horowitz
  • Kimi K3

Locations

  • San Francisco
  • United States
  • China

Sources