Last updated: July 7, 2026
These Terms of Service ("Terms") govern access to and use of LangevinAI (the "Service"), operated by LangevinAI ("Company," "we," "us"). By creating an account or using the Service, you agree to these Terms. If you are using the Service on behalf of an organization, you represent that you have authority to bind that organization, and "you" refers to that organization.
LangevinAI allows users to upload general ledger exports and related documents and receive automated classification, financial reporting (P&L, balance sheet, budget variance, aging), and AI-generated commentary. The Service is provided "as is" per Section 9.
You must sign in via our authentication provider (Clerk) to use the Service. You are responsible for maintaining the confidentiality of your account credentials and for all activity under your account.
The Service is offered under the following plans, at the prices listed at langevinai.io, as may be updated from time to time:
Each paid plan is available with a discounted Bring Your Own Key (BYOK) option, under which you supply your own Anthropic API key (stored only in your browser and never transmitted to our servers) instead of using our shared Anthropic API access.
Fees are billed via Stripe on a recurring basis and are non-refundable except as required by law or expressly stated at signup. To keep shared AI capacity available to all customers, we may apply reasonable fair-use and rate limits to plans using our shared Anthropic API access.
If you use a BYOK option, you are solely responsible for your Anthropic API key, any usage charges incurred directly with Anthropic, and compliance with Anthropic's own terms of service. We are not a party to your agreement with Anthropic and are not responsible for its performance.
You retain all ownership rights in the general ledger exports, budgets, and supporting documents you upload ("Customer Data"). We claim no ownership over Customer Data.
You grant us a limited license to process Customer Data solely as necessary to provide the Service to you (parsing, classification, report generation, AI commentary), as described in our Privacy Policy.
We do not use Customer Data to train AI models.
Consistent with our architecture, we do not persist Customer Data on our servers beyond your active session; see the Privacy Policy for detail.
LangevinAI's classifications, reports, and AI-generated commentary are generated using automated tools, including third-party large language models, and may contain errors, omissions, or inaccuracies. LangevinAI is a productivity and analysis aid, not a substitute for professional accounting, audit, tax, or financial advisory judgment. You are responsible for reviewing and verifying all output before relying on it for any financial reporting, regulatory, tax, audit, or decision-making purpose.
You agree not to:
The Service relies on third-party providers, including Anthropic (AI processing), Vercel (hosting), Clerk (authentication), Supabase (data storage), and Stripe (payments). Your use of the Service is also subject to the applicable terms of those providers where you interact with them directly (e.g., your own Anthropic account under BYOK).
The Service, including its software, design, and branding, is owned by the Company and its licensors. These Terms do not grant you any rights to our trademarks, logos, or brand features except as necessary to use the Service as intended.
You may cancel your subscription at any time via account settings or by contacting us; cancellation takes effect at the end of the current billing period unless otherwise stated. We may suspend or terminate your access for material breach of these Terms, non-payment, or as required by law. Upon termination, your right to use the Service ends; because Customer Data is not persisted server-side, there is generally no server-side data to return or delete beyond account/billing records.
THE SERVICE IS PROVIDED "AS IS" AND "AS AVAILABLE," WITHOUT WARRANTIES OF ANY KIND, WHETHER EXPRESS, IMPLIED, OR STATUTORY, INCLUDING WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT. WE DO NOT WARRANT THAT AI-GENERATED CLASSIFICATIONS, COMMENTARY, OR REPORTS WILL BE ACCURATE, COMPLETE, OR SUITABLE FOR ANY PARTICULAR FINANCIAL, ACCOUNTING, TAX, OR LEGAL PURPOSE.
TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE COMPANY AND ITS SUPPLIERS SHALL NOT BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR PUNITIVE DAMAGES, OR ANY LOSS OF PROFITS, REVENUE, DATA, OR GOODWILL, ARISING FROM YOUR USE OF THE SERVICE. OUR TOTAL LIABILITY FOR ANY CLAIM ARISING OUT OF OR RELATING TO THESE TERMS OR THE SERVICE SHALL NOT EXCEED THE AMOUNTS PAID BY YOU TO US IN THE TWELVE (12) MONTHS PRECEDING THE CLAIM.
Nothing in these Terms limits liability that cannot be limited under applicable law (e.g., gross negligence or willful misconduct, where non-excludable).
You agree to indemnify and hold harmless the Company from claims arising out of your Customer Data, your breach of these Terms, or your violation of applicable law, except to the extent caused by our breach of these Terms or applicable law.
These Terms are governed by the laws of the Province of Ontario and the federal laws of Canada applicable therein, without regard to conflict-of-laws principles. Any disputes shall be resolved in the courts of Ontario, and the parties consent to personal jurisdiction there.
We may update these Terms from time to time. Material changes will be notified via the Service or by email, with continued use after the effective date constituting acceptance.
LangevinAI
contact@langevinai.io