LeCHECK AI agent (Word add-in that runs the contract-review workflow) vs Luminance Agent Lumi and Autonomous Negotiation
LeCHECK AI agent (Word add-in that runs the contract-review workflow) (Lisse (株式会社リセ)) and Luminance Agent Lumi and Autonomous Negotiation (Luminance) are both listed in the Business operations category of Agent Index. They share no framework tags in our dataset.
| Field |  LeCHECK AI agent (Word add-in that runs the contract-review workflow) |  Luminance Agent Lumi and Autonomous Negotiation |
|---|---|---|
| Vendor | Lisse (株式会社リセ) | Luminance |
| HQ | Japan · Asia Pacific | United Kingdom · Europe |
| Primary category | Business operations | Business operations |
| Also listed in | Business operations, Risk | Business operations, Risk |
| Summary | AI agent in Lisse's LeCHECK contract-review service (Microsoft Word add-in, from Aug 21, 2026). It runs the steps of a legal professional's contract review in order (risk check, proposed clause edits, comments, format check), and the reviewer applies its suggestions with a click. | Legal AI platform whose agent (Agent Lumi) marks up contracts against company playbooks and triggers approvals; its Autonomous Negotiation can run AI-to-AI contract negotiations. |
| Framework tags (Agent Index) | — | — |
| Frameworks (vendor-claimed) | — | — |
| Capabilities / tasks | contract review, workflow automation | contract review, workflow automation |
| Pricing (as published) | Not published | Not published |
| Pricing model | quote | quote |
| Primary source | https://corp.lisse-law.com/release/notice/20260821/ | https://www.luminance.com/press-releases/luminance-launches-agent-lumi-automating-legal-work-across-the-enterprise-with-agentic-ai |
| Last checked | 2026-10-18 | 2026-10-18 |
| Official site | https://corp.lisse-law.com/release/notice/20260821/ | https://www.luminance.com/platform/product/negotiation |
Side-by-side data is generated from the open dataset. “Vendor-claimed” frameworks are as marketed by each vendor and not verified by Agent Index; framework tags indicate relevance, not certification. Request current quotes from each vendor before buying. This page does not rank or score vendors. Sponsored comparisons, if any, will be labelled.
Also in this use case
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Use-case comparisons
- Contract and legal-review AI agents — 25 listings (Contract review, drafting assistance and legal workflow automation)
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