ArmsLength AI Benchmarks vs TP/OS
ArmsLength AI Benchmarks
armslength.aiTP/OS
armslength.aiSide by side
| Figure | ArmsLength AI Benchmarks | TP/OS |
|---|---|---|
| Price from | €39.08/mo | — |
| Free plan | — | — |
| Free trial | — | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| API | Yes | Yes |
| Plans published | 7 | 4 |
| Spec score · Transfer Pricing Software | 8.5 (#4) | 7.9 (#6) |
| API capabilities | The OECD API offers semantic search, paragraph retrieval and bounded LLM-ready context packs. | The API exposes search, paragraph retrieval and LLM-oriented context-pack endpoints. |
| API licence | The OpenAPI specification labels the OECD API licence as proprietary and subject to ArmsLength AI terms. | The OpenAPI specification labels the public API licence proprietary and subject to ArmsLength AI terms. |
| Audit-log retention | Raw audit logs are retained for 30 days and then anonymised, with CSV or JSON exports available on request. | Raw audit logs are retained for 30 days and then anonymised, with CSV or JSON exports available on request. |
| Encryption | The service states that data is encrypted both in transit and at rest. | Data is protected with encryption in transit and at rest. |
| Headquarters | The registered office is ul. Komuny Paryskiej 2/13, 30-389 Kraków, Poland. | Kraków, Poland |
| Intended users | The company describes its target users as transfer-pricing advisory firms and in-house tax teams. | The product is presented for transfer pricing advisory firms and multinational in-house tax teams. |
| Penetration testing | The latest stated penetration test was completed in December 2025 by BreachLock using a gray-box OWASP-based assessment. | The security program includes annual penetration testing; the most recent test cited was completed in December 2025 by BreachLock. |
| Public API | The company publishes a versioned HTTP API for paragraph-level retrieval from the OECD Transfer Pricing Guidelines 2022. | ArmsLength AI publishes a versioned HTTP API for paragraph-level retrieval of the OECD Transfer Pricing Guidelines 2022. |
| Rating on G2 | 0.0 out of 5 from 0 reviews. | 0.0 out of 5 from 0 reviews |
| Security | ArmsLength AI states it is ISO/IEC 27001 certified, stores and processes customer project data in the EU, and encrypts data in transit and at rest. | ArmsLength AI says its security controls are ISO/IEC 27001 certified and customer project data is stored and processed in the EU. |
| Security certification | ArmsLength AI states that its information-security management system is ISO/IEC 27001 certified. | The company states that its information-security controls are ISO/IEC 27001 certified. |
| SSO | SSO is available through Microsoft Entra ID and Google, with provider-managed MFA recommended. | SAML single sign-on is available through Microsoft Entra ID and Google. |
| What it does | ArmsLength AI Benchmarks turns a database export into evidence-backed transfer-pricing benchmark reports. | TP/OS is a transfer-pricing documentation workspace for organizing group data, source files, reviews and approvals. |
Plans
ArmsLength AI Benchmarks
- Standard€469 a month
- Standard€469 a year
- Pro€829 a year
- Pro€829 a month
- Max€1,499 a year
- Max€1,499 a month
- CustomPriced on request
TP/OS
- BasePriced on request
- CustomPriced on request
- TP/OS DocumentationPriced on request
- TurnkeyPriced on request
In their own words
ArmsLength AI Benchmarks
ArmsLength AI Benchmarks has no write-up on Specifiction yet; its figures are above.
TP/OS
TP/OS is transfer pricing documentation software from ArmsLength AI for advisory firms and multinational in-house tax teams. It organizes source facts, reuses templates, and supports drafting and annual documentation updates. The product supports Local Files and Master Files, with localized outputs in a customer-selected structure. Its assistant reads source files, fills supported placeholders, and flags omissions or contradictions for review. Teams can request missing information from colleagues, track progress, and review content before sharing. TP/OS exports editable Word files in the customer's house style. It runs on the web, with Base, Custom, and Turnkey plans priced on request. A guided trial covers one Local File prepared the prior year, for review of its output and next-year update. Setup depends on the customer's templates and documentation needs, and the company asks customers to confirm country scope and outputs with its team. ArmsLength AI says its security controls are ISO/IEC 27001 certified, project data is stored and processed in the EU, and customer inputs are not used to train foundation models. SSO/SAML is available through Microsoft Entra ID and Google.