Freedom251 › Contract Negotiation Software
ThoughtRiver
What ThoughtRiver is
ThoughtRiver is an AI contract review platform for examining agreements before or after signature. Its Lexible language model identifies contract issues, obligations and risks, drawing on more than 4,150 lawyer-built concepts. Reviews use Playbooks, which apply preset criteria and show which provisions meet or fail those criteria. Teams can produce review output or redlines, and generative editing is designed to follow a user’s drafting style and negotiation guidelines. Contracts can enter the workflow by email, drag and drop, or the Word add-in. The platform also works inside Outlook, Word and Teams, with listed integrations for Microsoft 365, Power BI, HighQ and iManage. A public API follows the OpenAPI Specification. ThoughtRiver focuses on in-house legal teams and law firms handling over 200 agreements per year, and also supports non-legal teams. The plans include monthly options at 6.00 USD, 14.00 USD and $49 a month, plus legal-team plans starting at £15,000 a year. There is no free plan; a 28-day trial is available. ThoughtRiver states it is ISO27001 certified and encrypts contract documents and derived data at rest and in transit.
Who it suits
ThoughtRiver suits in-house legal teams and law firms processing more than 200 agreements a year, as well as non-legal teams that review contracts. Its Playbooks, redlining and integrations with Microsoft tools are relevant to teams that want reviews tied to preset criteria and existing workflows.
What it does well
- Reviews agreements before or after signature.
- Lexible flags issues, obligations and risks within minutes.
- Playbooks identify met and unmet provisions.
- Generative editing follows drafting style and negotiation guidelines.
- Works inside Outlook, Word and Teams.
- Public API follows the OpenAPI Specification.
What to know first
- There is no free plan.
- Monthly plans are listed at 6.00, 14.00 and 49.00 USD.
- Legal-team plans start at £15,000 a year.
Limits
There is no free plan, and the trial lasts 28 days. The listed legal-team Professional plan is for under 50 contracts a month and starts at £15,000 a year; the Enterprise plan is for over 50 contracts a month and starts at £30,000 a year.
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Pro | per month · For startups · Task Management · Real-time Collaboration · Customizable Dashboards · Advanced Analytics · Resource Allocation · Mobile Accessibility | $14 a month |
| Professional | From £15,000 per year · For SME legal teams · Under 50 contracts a month · Unlimited Users · Private Database Instance · Word Add-in · Lexible Assistant · SSO · Dedicated Customer Success · Dedicated Professional Services | £15,000 a year |
| Enterprise | From £30,000 per year · For high-volume legal teams · Over 50 contracts a month · Unlimited Users · Private Database Instance · Word Add-in · Lexible Assistant · SSO · Dedicated Customer Success · Dedicated Professional Services | £30,000 a year |
| Entreprise | per month · For companies · Task Management · Real-time Collaboration · Customizable Dashboards · Advanced Analytics · Resource Allocation · Mobile Accessibility | $49 a month |
| Starter | per month · For individuals · Task Management · Real-time Collaboration · Customizable Dashboards · Advanced Analytics · Resource Allocation · Mobile Accessibility | $6 a month |
As thoughtriver.com lists them, read 1 Oct 2026. The maker's own page has the final word.
Getting started
- Visit the ThoughtRiver website.
- Choose a listed plan or use the 28-day trial.
- Upload a contract by email or drag and drop, or use the Word add-in.
- Review the contract in the platform or inside Outlook, Word or Teams.
Verdict
Choose ThoughtRiver if your team needs AI contract review with Playbooks, redlining and Microsoft workflow access. It is aimed particularly at legal teams handling substantial agreement volumes. Consider the plan costs and the lack of a free plan when deciding whether it fits.
Questions
Is there a free plan?
No. A 28-day trial is listed.
How much does ThoughtRiver cost?
Monthly plans are listed at 6.00 USD, 14.00 USD and $49 a month. Professional starts at £15,000 a year, and Enterprise starts at £30,000 a year.
Which platforms does ThoughtRiver support?
The listed platforms are API, extension, web and Windows. The platform also works inside Outlook, Word and Teams.
Which integrations are listed?
Microsoft 365, Power BI, HighQ and iManage are listed integrations.
Does ThoughtRiver support redlining and Playbooks?
Yes. It supports clause comparison, redline suggestions and Playbooks, which report met and unmet provisions.
What security measures does ThoughtRiver state?
ThoughtRiver states it is ISO27001 certified. Contract documents and derived data are encrypted at rest with an account-specific key and in transit using TLS1.2.
Facts from ThoughtRiver's own pages
- AI training
- Lexible is trained on more than 4,150 lawyer-built concepts. · thoughtriver.com, 1 Oct 2026
- API
- ThoughtRiver provides a public API-first platform following the OpenAPI Specification. · thoughtriver.com, 1 Oct 2026
- Authentication
- Auth0 provides authentication, single sign-on and multifactor authentication, with only user email addresses passed to Auth0. · thoughtriver.com, 1 Oct 2026
- Contract analysis
- Its Lexible LLM flags key contract issues, obligations and risks within minutes. · thoughtriver.com, 1 Oct 2026
- Data protection
- Contract documents and derived data are encrypted at rest with a unique account-specific key and encrypted in transit using TLS1.2. · thoughtriver.com, 1 Oct 2026
- Data residency
- Customer data resides in ThoughtRiver-managed Azure data centers in a single specified region, with no external processors used for customer data. · thoughtriver.com, 1 Oct 2026
- Founded
- 2016 · thoughtriver.com, 28 Sept 2026
- Generative editing
- Generative AI features make contract editing mimic the user’s drafting style and negotiation guidelines. · thoughtriver.com, 1 Oct 2026
- Integrations
- Listed integrations include Microsoft 365, Power BI, HighQ and iManage. · thoughtriver.com, 1 Oct 2026
- Microsoft tools
- The platform works inside Outlook, Word and Teams. · thoughtriver.com, 1 Oct 2026
- Playbooks
- Contracts are reviewed against preset criteria called Playbooks, producing met and unmet provisions and allowing output or redlining. · thoughtriver.com, 1 Oct 2026
- Product purpose
- ThoughtRiver is an AI contract review tool for pre-signature or post-signature contract review. · thoughtriver.com, 1 Oct 2026
- Security certification
- ThoughtRiver states that it is ISO27001 certified, certificate number 21188-ISMS-001. · thoughtriver.com, 1 Oct 2026
- Support browsers
- Supported browsers are the latest stable versions of Chrome, Edge, Firefox and Safari on macOS. · support.thoughtriver.com, 1 Oct 2026
- Target users
- ThoughtRiver focuses on in-house teams and law firms processing over 200 agreements per year, and also supports non-legal teams. · thoughtriver.com, 1 Oct 2026
- Workflow access
- Contracts can be uploaded via email, drag and drop, or the Word add-in. · thoughtriver.com, 1 Oct 2026
Where ThoughtRiver stands on Freedom251
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