Inference-time model routing based on legal practice area dramatically improves agent performance.
So do other types of "blended intelligence":
- collaborative model teams,
- advisor-executor patterns,
- and model routing based on inferred user preference.
While these methods
Harvey
389 posts
AI for the world’s most complex legal work.
Joined March 2023
- We partnered with @appliedcompute to train a legal agent. We optimized each part of the agent stack: - the evaluation loop - the agent harness - and post-trained the underlying GLM-5.1 model. The result? The agent achieved the highest rubric pass rate on our Legal AgentWe partnered with @harvey to post-train the state-of-the-art legal agent on their LAB benchmark. It surpasses Opus 4.8 Max and GPT-5.5 xhigh.
00:00 - Harvey repostedNEW: Harvey Co-Founder + Head of Applied Research on the *Token Reckoning* Valued at $11B, @harvey is on a mission to win the entire legal category, competing head-on against the trillion-dollar labs Coding agents hit Karpathy's "agents work now" inflection in late 2025. Harvey
00:00 - We're training the first in a series of legal foundation models. Harvey Labs is hiring across the post-training, agent, and data stack. We're also interested in acquiring teams and neolabs with talent in these areas. DM @gabepereyra if you're excited by frontier legal AI.Model strategy for @harvey: We are working on the first model in our legal foundation model series, inspired by @cursor_ai's Composer. Two goals: 1. Allow us to serve frontier intelligence across our product surface areas at an affordable price and a strong security posture.
- Vals AI has released a live leaderboard of our Legal Agent Benchmark (LAB). We're excited to see LAB more deeply embedded in the eval ecosystem. See @ValsAI's live leaderboard here:
- Harvey repostedThe Box MCP connector is now available in @harvey's Connector Library to early access customers. Search files, query documents, extract metadata, and create content in Box directly from Harvey, with existing permissions and security controls enforced throughout. Watch it in
00:00 - Join us for Agents Happy Hour in SF on Tuesday, June 23, co-hosted with our friends at @browserbase and @reductoai. We’re bringing together engineers and founders for drinks and demos on building useful agents. Food and drinks provided, space is limited. RSVP below.
- Harvey repostedNEW: Inside $11B @harvey HQ w/ CEO Winston Weinberg Exclusive tour of their gorgeous SF office & an update on their scale.. TLDR: they're ripping. At 4 years old, Harvey has reached: - Passed $300M ARR this month (3x growth from $100M last August) - Nearly 1K employees, 12
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