The Curious Engineer

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Lexifina

lexifina.com/blog

Insights on legal AI, drafting, review, research, and the future of legal work from the Lexifina team.

AI / MLSoftware / engineering practiceSociety / politics / economy

’25’26
Posts
49 from 10 Nov 2025 to 6 Nov 2026
Posting
weekly (49 in the last year)
Kind
company blog

2026 44

  1. November 6, 2026OpinionGit for Global LawWhy a standard set of functions, like git blame, should work across every jurisdiction’s law, and what readers pushed back on: case law, authority and stale data.3 min read
  2. October 28, 2026OpinionGit for the US CodeLawyers should be able to read a statute as it stood on any date and see which law wrote each phrase. A history of nine titles of the US Code, built by replaying every amendment, as the example.4 min read
  3. October 24, 2026OpinionFirecrawl’s government indexA free search over 30 million US government pages, built mostly from public data and open-source parts. It is good for finding US law, weaker for citing it, and its hardest part is reaching the pages at all.4 min read
  4. October 22, 2026EngineeringKnowledge graphs could help orgs respond to new lawsWhat a new EU regulation affects across firms of 120 to 120,000 matters: an agent reading files, Codex and Claude Code, and a knowledge graph. At 120,000 matters the graph found all 5,274 agreements about five times faste
  5. October 20, 2026EngineeringBuilding full-firm knowledge graphs to dramatically speed up agentsGiving an agent a knowledge graph of the whole firm cut its time to answer five firm-wide questions by 73%, its input tokens by 92% and its model calls by 66%, with no loss of accuracy.6 min read
  6. October 14, 2026EngineeringThe new unit of work for document collaborationA prompt that writes, lints, compiles and tests is a new unit of work, which needs a corresponding checkpoint.3 min read
  7. October 10, 2026EngineeringA black box recorder for contractsWhen an agent drafts half a contract, the lawyer signing it needs to know who wrote each word. Lexifina records it, and can replay how the contract got there.6 min read
  8. October 9, 2026EngineeringThe Best Design for Agent GUIsThe optimal, agent-integrated workspace experience.6 min read
  9. October 9, 2026OpinionLawyer burnout, measuredThe largest study of US lawyers finds nearly half highly burned out, with distress tracking hours and work–family conflict, while billable hours keep rising.3 min read
  10. October 8, 2026OpinionThe shrinking junior-lawyer pipelineFewer first-years hired, more laterals, and record law school applications.6 min read
  11. October 7, 2026OpinionAI won’t suppress legal ratesHow do law firms handle or pass-on token costs?6 min read
  12. October 6, 2026OpinionWhere do we draw the line on AI in court filings?Reading into a full year of AI-filing sanctions and court rules.4 min read
  13. October 3, 2026EngineeringAutomating UK wills end-to-end with review flagsAutomating the process around physical UK will writing.7 min read
  14. October 2, 2026EngineeringFully automated legal matters – from start to finishClosing a matter in 40 minutes.6 min read
  15. September 25, 2026EngineeringAgent token spend distribution: coding versus legal workHow coding and legal agents use tokens across instructions, tools, reasoning, and skills.3 min read
  16. September 11, 2026EngineeringMapping WYSIWYG diffs to AI runs and sourcesTightly binding AI with document editor controls4 min read
  17. September 9, 2026OpinionThe Navier-Stokes solution for the legal professionHow much information can be searched, structured and verified before a human lawyer has to look at it?3 min read
  18. September 8, 2026ResearchOptimising harness self-recursionThe usage data and constraints required for recursion.6 min read
  19. September 7, 2026OpinionThe auto-formalization of mathematics versus lawThe auto-formalisation of Fermat’s last theorem vs the legal domain3 min read
  20. August 14, 2026ResearchAgent hooks for law firmsUse cases and agent controls.4 min read
  21. August 10, 2026ResearchMulti-agent version control with reactive feedbackScaling both multi-agent and subagent-mediated workflows10 min read
  22. August 7, 2026ResearchSolving legal problems with DAGsApplying agent loops to legal drafting.6 min read
  23. August 6, 2026ResearchSee inside your agents to fix themAgent observability from outcomes to evidence.3 min read
  24. August 5, 2026ResearchDomain-specific compactionContext management for specialised agents.6 min read
  25. August 4, 2026ResearchOur top agent latency optimisationsOptimising network and performance behaviour for cloud agents.15 min read
  26. August 3, 2026ResearchCloud Agents Should Use (Some) Code ExecutionOptimising the model-tool invocation loop.6 min read
  27. July 15, 2026ResearchLegal AI, not a coding agent with scaffolding.Does legal AI need to be fundamentally different?6 min read
  28. July 11, 2026OpinionThe logic behind Kirkland x PalantirThe natural direction to take?4 min read
  29. July 8, 2026EngineeringA complete overview of AI agents.How a harness turns a generative model into a constrained sequence of state transitions.13 min read
  30. June 26, 2026ResearchCompaction in CC, Codex, and OpenCodeHow agents preserve a useful continuation state.3 min read
  31. June 25, 2026ResearchMulti agent systems for complex tasksDelegating complex work across subagents.5 min read
  32. June 24, 2026ResearchBuilding Agent Telemetry for LLMsAligning on intent, risks, and tasks.3 min read
  33. June 18, 2026EngineeringMulti-doc agent workflows in WordGoing up a level of abstraction in Word.5 min read
  34. June 16, 2026EngineeringThe Legal Agent StackThe evolution and differentiation of agentic legal systems.3 min read
  35. April 25, 2026ResearchLegal Ontologies: The Missing LayerFrom document processing to deep reasoning.3 min read
  36. March 24, 2026OpinionThe battle for the billable hourBilling for uncertainty in legal work.3 min read
  37. March 9, 2026EngineeringWhy LLMs Behave the Way They DoHow language models developed, and their resulting behaviour.12 min read
  38. March 6, 2026EngineeringVersion control and full session capture are table stakesApplying drafting information strategically.3 min read
  39. March 5, 2026OpinionAgentic AI vs Legal TechWill general purpose agents replace legaltech?3 min read
  40. February 20, 2026ResearchMemory Systems for Legal AILighting up legal memory like human synapses.3 min read
  41. February 13, 2026ResearchOntologies Are All You NeedCreating systems of audit for legal AI.3 min read
  42. February 11, 2026OpinionAn inside guide to buying legal tech.Both sides of law firm interactions with vendors.3 min read
  43. February 6, 2026ResearchLong running autonomous agents for knowledge workThe interplay between autonomous agents and human direction.3 min read
  44. January 12, 2026EngineeringLexifina vs Spellbook for Legal DraftingComparing two redlining strategies.3 min read

2025 5

  1. December 10, 2025OpinionAI Strategy for Estate Planning LawyersMinimising AI risk for estate planning.3 min read
  2. December 8, 2025ResearchThe State of the Art for Domain-Specific AIA practical systems roadmap.6 min read
  3. December 5, 2025OpinionTechnology adoption for big and small firmsReflections from discussions with law firm owners.3 min read
  4. November 19, 2025OpinionWhy lawyers are likely to start using version controlHow law firms leverage their data.3 min read
  5. November 10, 2025ResearchReinforcement Learning for Legal DraftingSolving legal drafting as an open-ended system.3 min read