Fireworks AI detailed Harvey's proprietary model Tenet, post-trained from Kimi K3 using async RL on Fireworks Training API, doubling LAB Contract all-pass rates from 10.8% to 19.7% at matched cost.

Key Takeaways

  • ✓Achieves SOTA 19.7% on Harvey's LAB Contracts benchmark for long-horizon legal drafting and analysis;
  • ✓Trained via Fireworks Training API async RL pipeline, doubling accuracy without increasing inference cost;
  • ✓Demonstrates the production blueprint for vertical AI leaders building specialized agents on open bases.
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Key Decision Metrics at a Glance

TL;DR Verdict
🏆 Benchmark RankRank
Achieves SOTA 19.7% on Harvey's LAB Contracts benchmark for long-horizon legal drafting and analysis;
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💰 Cost & PlansCompare
Kimi K3 · in: $3 / out: $15
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🛠️ Ecosystem & IDERules
Cursor · Claude Code · API
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