Gleen: Solving LLM Hallucinations

Gleen: Solving LLM Hallucinations

The News: On September 5, Gleen announced it has raised $4.9 million to accelerate its work in solving a major issue with large language models (LLMs)—hallucination. Gleen AI is focused on improving LLM-based chatbots that are focused on customer support/customer service, and it is now publicly available.

LLM-based chatbots tend to hallucinate, responding to queries with completely fabricated information. To address this problem, Gleen created a proprietary AI layer, independent of the LLM, that ingests enterprise knowledge across multiple sources, manages it, selectively feeds knowledge to the LLM, and cross-checks the quality of the LLM’s response, eliminating hallucination. Gleen AI is LLM-agnostic. It currently works with GPT 3.5 and 3.4, Anthropic, and Llama, and it is integrated into Slack, Discord, and other leading help desk solutions. Gleen provides software development kits (SDKs) and REST APIs for customers to integrate directly. Read the full blog post on the public availability of Gleen AI on the Gleen website.

Gleen: Solving LLM Hallucinations

Analyst Take: It is interesting that given the potential impact of LLMs there is so much work involved in making them behave properly. Hallucination is a big challenge. Is Gleen the type of solution to solve it? What about other LLM challenges? Here are some of the key takeaways from Gleen’s debut.

Gleen Is on To Something

Hallucination is a massive issue for LLMs, and if Gleen can solve this problem, it could translate into real productivity gains for generative AI applications. On paper, the Gleen AI solution is interesting and makes sense as a solution that might be able to mitigate LLM hallucination. The fact that Gleen AI is an abstraction layer, independent of the LLM, makes this solution compelling and enables it to be LLM-agnostic. It is unclear whether navigating that layer with data will mean additional costs for data processing.

Hallucinations Are Not the Only Accuracy-Focused LLM Challenge

Hallucination is only one of several challenges enterprises face in deploying LLMs. To be fair, Gleen is also addressing false confidence and some accuracy issues with Gleen AI. Other issues that Gleen AI might also be able to solve explanability issues; however, Gleen AI probably does not provide the sources to back up its conclusions of the corrected answers. Another issue it might not solve is mitigating bias—LLMs tend to require a heavy dose of pre-production monitoring to weed out bias language and answers.

Cost Issues for Running LLMs

A cottage industry has sprung up to address cost issues for leveraging LLMs. Current compute costs for LLMs can be expensive. As a result, there are massive efforts by a number of chip manufacturers to build more efficient, purpose-built AI chips; a range of development tools have been designed to help AI models for LLMs to run more efficiently; and there are LLMs that are trained on smaller data sets.

Conclusion

Hallucination is not the only challenge enterprises using LLMs face, but it is a significant one worth solving. If Gleen’s concept works, players will scramble to build similar solutions, particularly larger AI development platforms/tools vendors, including the LLM players themselves. Gleen’s focus is on hallucinations or customer service chatbots, but LLMs do not discern in their hallucinations, which means it is likely that savvy players will develop hallucination fighters for all LLM applications.

Disclosure: The Futurum Group is a research and advisory firm that engages or has engaged in research, analysis, and advisory services with many technology companies, including those mentioned in this article. The author does not hold any equity positions with any company mentioned in this article.

Analysis and opinions expressed herein are specific to the analyst individually and data and other information that might have been provided for validation, not those of The Futurum Group as a whole.

Other insights from The Futurum Group:

Qualcomm-Meta Llama 2 Could Unleash LLM Apps at the Edge

Top Trends in AI This Week: August 25, 2023

OpenAI ChatGPT Enterprise: A Tall Order

Author Information

Based in Tampa, Florida, Mark is a veteran market research analyst with 25 years of experience interpreting technology business and holds a Bachelor of Science from the University of Florida.

Related Insights
Qualcomm’s Snapdragon Wear Elite Redefines the AI Wearable Stakes—But Who Wins the Wrist War?
April 22, 2026

Qualcomm’s Snapdragon Wear Elite Redefines the AI Wearable Stakes—But Who Wins the Wrist War?

Qualcomm's Snapdragon Wear Elite marks a turning point in wearable AI, delivering a dedicated neural processing unit for on-device intelligence, privacy, and real-time voice interactions—positioning the company against Apple and...
VAST Data Valuation Triples. Can a Unified Platform Scale AI Globally?
April 22, 2026

VAST Data Valuation Triples. Can a Unified Platform Scale AI Globally?

Brad Shimmin, Vice President & Practice Lead at Futurum, analyzes VAST Data valuation and its AI operating system strategy, questioning whether unified infrastructure can scale amid persistent market fragmentation....
Cerebras S-1 Teardown: Is the $23B Wafer-Scale IPO the End of GPU Homogeneity?
April 22, 2026

Cerebras S-1 Teardown: Is the $23B Wafer-Scale IPO the End of GPU Homogeneity?

Brendan Burke, Research Director at Futurum, examines Cerebras Systems' S-1 filing and $23B valuation, dissecting the $20B OpenAI deal, 86% UAE revenue concentration, and whether wafer-scale silicon can survive the...
Free Notification Sound Effects: Are Royalty-Free SFX the Next Enterprise UX Edge?
April 22, 2026

Free Notification Sound Effects: Are Royalty-Free SFX the Next Enterprise UX Edge?

ElevenLabs' new free royalty-free SFX offering removes licensing barriers for enterprise audio branding. As digital products compete for user attention, professional-grade notification sounds become a strategic UX differentiator....
Free Notification SFX: Does High-Quality Audio Democratize Digital Experience?
April 22, 2026

Free Notification SFX: Does High-Quality Audio Democratize Digital Experience?

ElevenLabs democratizes audio creation with free, high-quality notification sound effects for developers and creators. This strategic move lowers barriers to professional sound design while reshaping the competitive landscape for SFX...
Brand Visibility Solution
April 21, 2026

Will Adobe’s Brand Visibility Solution Rewrite the Rules of AI-Driven Customer Experience?

Adobe expands Experience Manager with a brand visibility solution for AI-driven customer engagement, positioning itself against Salesforce, Oracle, and SAP as generative AI becomes enterprises' primary discovery channel....

Book a Demo

Newsletter Sign-up Form

Get important insights straight to your inbox, receive first looks at eBooks, exclusive event invitations, custom content, and more. We promise not to spam you or sell your name to anyone. You can always unsubscribe at any time.

All fields are required






Thank you, we received your request, a member of our team will be in contact with you.