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Harvey
@harvey
AI for the world’s most complex legal work.
3 Following    16.1K Followers
We're open sourcing a 100M+ token synthetic law firm we built with @EngramLab. The firm contains work product from 250+ synthetic matters across 46 clients, spanning ~10k files. We built this environment to evaluate an agents' ability to search and understand a firm's past practice to inform present work - the same knowledge that a tenured associate or partner would have. It's our first step towards building agents that deeply understand a firm's work and processes. More to come soon Deep dive by @ItsJulioPereyra and @nikogrupen:
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Steve Zad joins Harvey today as Chief Revenue Officer. Steve joins from Rubrik, which he helped scale from $50M to $1.5B ARR through a 2024 IPO. We’re excited to have Steve lead GTM at Harvey after adding $100M+ net new ARR last quarter.
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Thanks to @ItsJulioPereyra and Harvey’s benchmarking team for improving the Legal Agent Benchmark (LAB), preparing it for retrieval-augmented generation (RAG) development, and continuing to support open-source legal AI research and development!
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Harvey in Markel Group's Q2 earnings call today ($MKL)
Harvey is now AIUC-1 certified.
Introducing Harvey Research: We've shared our model strategy. We've open-sourced Legal Agent Benchmark, the largest benchmark for long-horizon legal work spanning 1,200 tasks across 24+ practice areas. And we've collaborated on research with leading neolabs and inference providers like @baseten, @trajectorylabs, @LangChain, @FireworksAI_HQ, @appliedcompute, and @EngramLab. Now we have a home base for it. Live at:
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Growth Equity at Goldman Sachs and J.P. Morgan's Growth Equity Partners are now investors in Harvey.
At Harvey we've scaled document processing 39x over the last year, excited to share our learnings below! Super proud of the engineering team that optimized this across our whole retrieval stack while increasing reliability.
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Law school is changing. @GabrielMacht sat down with students at three of our law school partners to talk about how they use Harvey.
Impressive benchmark scores from Opus 5, inching closer to Fable-level performance on @harvey's Legal Agent Bench. Maybe more impressively, during our early access testing we found that Opus 5 performed much better at low reasoning than prior Opus checkpoints, leading to 26% gains in token efficiency relative those prior models. More here:
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One challenge facing legal AI is the context window. This is fairly straightforward: as data rooms grow, search becomes more complex. And it doesn't just apply to law: anyone working with long-running tasks has to grapple with context windows. Currently, methods to optimize context windows in the industry range from summarization to KV cache compaction to true continual learning in weights.
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Problems we’re working on at Harvey and Baseten: - 100M-token data rooms for M&A agents - Neural KV cache compaction - Synthetic client matters for model training Deep dive with @gabepereyra and @baseten's Co-Heads of Model Training @oneill_c and @mudithj:
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When @mudithj and I met @gabepereyra, we were expecting just another vanilla intro call and instead had the best yarn about research, the state of LLMs, and where intelligence is actually heading. It's rare to meet a founder this deep in the weeds who's also building for one of the most important verticals in this new age of intelligence So it was awesome to sit down with Gabe for an extended discussion on what it take to build agents that can reliably complete work over hours, days, or even longer? We talked about why agents today struggle with search and long context windows and how techniques like KV-cache compaction, synthetic data, and continual learning could help. 0:00 Introduction 0:36 Getting legal agents to review the whole data room 2:08 Data rooms larger than any context window 5:28 How far open-source models can go 7:58 Where specialist models fit in legal AI 10:59 Training legal models when client data is off-limits 13:06 Teaching a model how a law firm works 13:59 What belongs in context vs. model weights 15:36 From firm-wide AI to a model for every lawyer 18:37 What training adds beyond retrieving the right cases 20:26 Why context windows have plateaued 24:01 How models could learn continuously on the job 26:12 Can AI recursively improve AI research? 27:07 Research agents can run experiments but not choose them 30:00 Why open-ended research is hard to train 33:47 Why deployment, not intelligence, is the bottleneck 35:08 The cost of frontier intelligence 36:59 Different neolabs, different paths to intelligence 39:26 Using open datasets to compare research methods 41:13 Conclusion
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Environments to train agents for diligence is one of my current favorites of our ongoing research projects. A few reasons why:
@nvidia continues to be an amazing partner in bringing open models to legal & professional knowledge work. Post-training Nemotron 3 Ultra on @harvey's Legal Agent Bench reached frontier quality at 10x lower cost per run.
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Reliability Sprint Token usage grew 3.5x in a quarter and led to reliability issues across our databases, vector search, job queues, and document processing infra. We implemented database sharding and tighter incident detection, and migrated to horizontally scalable systems like Turbopuffer and Temporal among many other efforts. Resolved all major reliability issues in two months, now Harvey is scaling as fast as before but much more reliably for our customers.
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Here's what Harvey Engineering shipped in Q2: - Long Horizon Agents - Contract Intelligence - Command Center - Cloud Agent Platform - Agentic Word - Reliability Sprint - Agent Builder v2 - Legal Agent Benchmark (LAB) - Research Collaborations Thread of highlights:
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Karen Contoudis Buzard leads U.S. Markets Innovation at A&O Shearman, one of the world’s largest law firms. @GabrielMacht sat down with Karen to talk about lawyers building technology, and how she uses Harvey as a sparring partner.
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Now live in Harvey: GPT-5.6 Sol. GPT-5.6 Sol shows strong performance across compliance, deal and case management, and document review, among other high-volume legal workflows.
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