A US Artificial Intelligence start-up backed by OpenAI has built its first in-house model on Chinese lab Moonshot AI’s Kimi K3, highlighting a growing shift by Western tech firms towards Chinese open-weight systems amid soaring development costs.San Francisco-based legal tech provider Harvey, whose high-profile backers also include Sequoia Capital and Andreessen Horowitz, said on Thursday that its new model, Harvey-tenet" class="entity-link entity-topic" data-entity-id="190505" data-entity-type="topic">Harvey Tenet, was post-trained on top of the open-weight Kimi K3 base.The company said the system achieved “state-of-the-art” performance in complex legal work.
SRCSouth China Morning Post
LANGEN
LEANCenter-Right
WORDS82
ENT11
FRI · 2026-08-21 · 14:00 GMTBRIEF NSR-2026-0821-104588
NSR-2026-0821-104588News Report·EN·Technology
OpenAI-backed legal tech firm pivots to Chinese Kimi K3 open-weight model
US legal tech startup Harvey, backed by OpenAI, has developed its first in-house AI model, Harvey Tenet. This new model is built upon Moonshot AI's Kimi K3, a Chinese open-weight system.
Xinmei ShenSouth China Morning PostFiled 2026-08-21 · 14:00 GMTLean · Center-RightRead · 1 min
South China Morning PostFIG 01
Reading time
1min
Word count
82words
Sources cited
2cited
Entities identified
11entities
Quality score
100%
§ 01
Briefing Summary
AI-generatedNEWSAR · AI
US legal tech startup Harvey, backed by OpenAI, has developed its first in-house AI model, Harvey Tenet. This new model is built upon Moonshot AI's Kimi K3, a Chinese open-weight system. Harvey announced on Thursday that Harvey Tenet achieved "state-of-the-art" performance in complex legal tasks. This development signifies a trend among Western tech firms to utilize Chinese open-weight models, driven by increasing AI development costs. Harvey's other notable investors include Sequoia Capital and Andreessen Horowitz.
Confidence 0.85Sources 2Claims 4Entities 11
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Article analysis
Model · rule-basedFraming
Technology
Economic Impact
Tone
Measured
AI-assessed
CalmNeutralAlarmist
Factuality
0.80 / 1.00
Factual
LowHigh
Sources cited
2
Limited
FewMany
§ 03
Key claims
4 extracted01
Harvey's new model, Harvey Tenet, was post-trained on top of the open-weight Kimi K3 base.
factualHarvey
Confidence
1.00
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OpenAI-backed legal tech firm Harvey has built its first in-house model on Chinese lab Moonshot AI’s Kimi K3 open-weight model.
factualHarvey
Confidence
1.00
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The system achieved “state-of-the-art” performance in complex legal work.
quoteHarvey
Confidence
0.90
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There is a growing shift by Western tech firms towards Chinese open-weight systems amid soaring development costs.
factual
Confidence
0.80
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Full report
1 min read · 82 words§ 05
Entities
11 identifiedKey playerOppositionContextPositiveNeutralNegative
Organizations4
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Keywords & salience
9 termsartificial intelligence
1.00
open-weight model
0.90
legal tech
0.80
harvey
0.70
kimi k3
0.60
moonshot ai
0.60
tech firms
0.50
openai
0.50
development costs
0.40
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Topic connections
Interactive graph Network visualization showing 2 related topics
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