Thinca Releases "Kaikura AI Knowledge," an Interactive AI Chat Service that Learns from and Answers Based on Designated Internal Documents
Thinca Co., Ltd. announced the launch of "Kaikura AI Knowledge" on April 27, 2026. This AI chat service learns exclusively from uploaded internal documents to provide accurate answers and summaries while minimizing hallucinations.
📋 Article Processing Timeline
- 📰 Published: April 23, 2026 at 00:30
- 🔍 Collected: April 23, 2026 at 00:02
- 🤖 AI Analyzed: April 23, 2026 at 03:17 (3h 15m after Collected)
Thinca Co., Ltd. (Headquarters: Chiyoda-ku, Tokyo; Representative Director and CEO: Takahiro Ejiri; hereinafter "Thinca"), which develops and sells the AI communication integration platform "Kaikura," announced that it will begin offering "Kaikura AI Knowledge," an interactive AI chat service based on internal company materials, on April 27, 2026.
This service allows AI to learn using only internal materials such as PDFs, Word documents, and text files uploaded by users as information sources, and generates answers and summaries based on these sources in a chat format. It enables rapid search and utilization of unique knowledge scattered throughout the company, such as business manuals, internal regulations, past meeting minutes, and proposals. This greatly reduces the man-hours required for daily information searches, minimizes hallucinations (factual errors), and strongly supports the construction of a safe and highly productive knowledge-sharing system.
Background of the Development of "Kaikura AI Knowledge"
Recently, against the backdrop of a severe human resource shortage, corporate DX promotion has been accelerating. On the other hand, massive amounts of data have accumulated internally, and many companies face the challenge of "wasted time in information search," such as "not knowing where the necessary manuals or regulations are" or "taking too much time to find past meeting minutes or proposals."
Furthermore, with general generative AI services, there was a concern that they could not provide answers based on specific internal rules or the latest company information, generating plausible lies (hallucinations) that differ from the facts.
To solve these issues, Thinca developed a new AI chat service specialized in "accurately answering and summarizing using only user-specified documents as information sources."
Main Features and Benefits of "Kaikura AI Knowledge"
This service transforms internal documents into "answering knowledge," achieving both a reduction in information search man-hours and reliability of answers.
(1) Accurate answers using only specified documents as information sources
The AI generates answers based solely on materials uploaded by users, such as PDFs, text, and Word files. Because it does not refer to uncertain external information like general-purpose AIs, it keeps hallucinations extremely low and provides highly reliable information in line with internal regulations and manuals. When answering, it can also present "which part of which document was referenced."
(2) Completing "summarization" of vast materials and "handling internal inquiries" via chat
By simply giving instructions in a chat format, such as "Summarize the main points of this dozens-of-pages manual into three points" or "Tell me the application procedure for XX," the AI instantly generates output. Users can search for information as if talking to a "dedicated assistant" who understands the content of the materials, reducing the time spent checking vast materials and the burden of internal inquiries.
(3) Further improving business quality through integration with customer interaction history
While this service can be used on its own, it is scheduled to be seamlessly integrated with the text data of call recordings and customer interaction history accumulated in our AI communication integration platform "Kaikura" in the future. By having the AI read past excellent interaction histories and talk scripts, it is expected to contribute to educational support for new staff and raising the baseline of interaction quality.
About Thinca Co., Ltd.
Company Name: Thinca Co., Ltd. (TSE Growth: 149A)
Representative: Takahiro Ejiri, Representative Director and CEO
Location (Headquarters): 10th Floor, Hirose Building, 3-17 Kanda Nishikicho, Chiyoda-ku, Tokyo 101-0054
Established: January 8, 2014
Business Description: System planning, development, and operation utilizing IT; planning, development, sales, and operation of cloud service products; consulting on IT service utilization
Capital: 397 million yen
Number of Employees: 75 (as of the end of December 2025)
URL: https://www.thinca.co.jp/
[Thinca IR note]
https://note.com/thinca_2025
We disseminate detailed information regarding Thinca's business strategy and growth potential.
This service allows AI to learn using only internal materials such as PDFs, Word documents, and text files uploaded by users as information sources, and generates answers and summaries based on these sources in a chat format. It enables rapid search and utilization of unique knowledge scattered throughout the company, such as business manuals, internal regulations, past meeting minutes, and proposals. This greatly reduces the man-hours required for daily information searches, minimizes hallucinations (factual errors), and strongly supports the construction of a safe and highly productive knowledge-sharing system.
Background of the Development of "Kaikura AI Knowledge"
Recently, against the backdrop of a severe human resource shortage, corporate DX promotion has been accelerating. On the other hand, massive amounts of data have accumulated internally, and many companies face the challenge of "wasted time in information search," such as "not knowing where the necessary manuals or regulations are" or "taking too much time to find past meeting minutes or proposals."
Furthermore, with general generative AI services, there was a concern that they could not provide answers based on specific internal rules or the latest company information, generating plausible lies (hallucinations) that differ from the facts.
To solve these issues, Thinca developed a new AI chat service specialized in "accurately answering and summarizing using only user-specified documents as information sources."
Main Features and Benefits of "Kaikura AI Knowledge"
This service transforms internal documents into "answering knowledge," achieving both a reduction in information search man-hours and reliability of answers.
(1) Accurate answers using only specified documents as information sources
The AI generates answers based solely on materials uploaded by users, such as PDFs, text, and Word files. Because it does not refer to uncertain external information like general-purpose AIs, it keeps hallucinations extremely low and provides highly reliable information in line with internal regulations and manuals. When answering, it can also present "which part of which document was referenced."
(2) Completing "summarization" of vast materials and "handling internal inquiries" via chat
By simply giving instructions in a chat format, such as "Summarize the main points of this dozens-of-pages manual into three points" or "Tell me the application procedure for XX," the AI instantly generates output. Users can search for information as if talking to a "dedicated assistant" who understands the content of the materials, reducing the time spent checking vast materials and the burden of internal inquiries.
(3) Further improving business quality through integration with customer interaction history
While this service can be used on its own, it is scheduled to be seamlessly integrated with the text data of call recordings and customer interaction history accumulated in our AI communication integration platform "Kaikura" in the future. By having the AI read past excellent interaction histories and talk scripts, it is expected to contribute to educational support for new staff and raising the baseline of interaction quality.
About Thinca Co., Ltd.
Company Name: Thinca Co., Ltd. (TSE Growth: 149A)
Representative: Takahiro Ejiri, Representative Director and CEO
Location (Headquarters): 10th Floor, Hirose Building, 3-17 Kanda Nishikicho, Chiyoda-ku, Tokyo 101-0054
Established: January 8, 2014
Business Description: System planning, development, and operation utilizing IT; planning, development, sales, and operation of cloud service products; consulting on IT service utilization
Capital: 397 million yen
Number of Employees: 75 (as of the end of December 2025)
URL: https://www.thinca.co.jp/
[Thinca IR note]
https://note.com/thinca_2025
We disseminate detailed information regarding Thinca's business strategy and growth potential.