# Thomson Reuters launches proprietary Thomson language model

_Sunday, August 23, 2026 at 8:00 PM EDT · AI, Products · Latest · Tier 2 — Notable_

![Thomson Reuters launches proprietary Thomson language model — Primary](https://www.thomsonreuters.com/content/dam/ewp-m/images/thomsonreuters/en/photography/reuters/rtr1zkvu-luke-macgregor-tr.jpg.transform/rect-768/q90/image.jpg)

Thomson Reuters launched Thomson, its first proprietary large language model, on August 24 after investing $40 million across training talent and compute. The company built the model from an open-source foundation and specialized it with content and expertise from Westlaw, Practical Law, Checkpoint and Reuters. Thomson will first power Tabular Analysis in CoCounsel Legal; a smaller open-weight version is planned for academic and non-commercial evaluation, while the company's performance claims still require broader independent validation.

## Sources

- [Thomson Reuters](https://www.thomsonreuters.com/en/press-releases/2026/august/thomson-reuters-leverages-its-world-class-data-assets-to-launch-its-own-frontier-model)
- [Thomson model page](https://www.thomsonreuters.com/en/thomson-llm)

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Retrieved: 2026-08-26T04:35:24.950Z
Publisher: Tech & Business (techandbusiness.org)