人・夢・技術でつなぐ未来
長大 (CHODAI) (chodai.co.jp) scores 40 out of 100 on Brand Analyzer, placing it in the Early Stage tier among Government brands, Real Estate brands, Other brands, in the 1st percentile of 20179 Government brands.
長大 (CHODAI) is a 人・夢・技術 株式会社長大 人・夢・技術グループ 「もっといい」の、その先へ toggle navigation. It was founded in 1968. It is headquartered in Tokyo. 人と夢を技術でつなぎ、社会インフラの発展に貢献する。.
| Brand Name | 長大 (CHODAI) |
|---|---|
| Domain | chodai.co.jp |
| Industry | Government, Real Estate |
| Founded | 1968 |
| Headquarters | Tokyo |
| Parent Company / Owner | 人・夢・技術グループ |
| Main Competitors | Nippon Koei (35/100), Oriental Consultants, Pacific Consultants (61/100), CTI Engineering, Yachiyo Engineering, Japan Engineering Consultants (JEC) |
Ranked #2,230,588 on the Tranco list of most-visited sites - modest traffic makes the brand easy for AI models to overlook.
No Wikipedia presence was found - a major gap, since Wikipedia is among the most heavily weighted sources in AI training data.
The homepage meta description reads "人・夢・技術 株式会社長大 人・夢・技術グループ 「もっといい」の、その先へ toggle navigation" (Meta description: 6 words. OG description present but brief) - this is the summary AI engines are most likely to quote.
Structured data on the homepage: og:title, og:description. Adding Organization and FAQ schema would further help AI crawlers parse the brand's identity.
AI-crawler access: No robots.txt found (default: all bots allowed, but explicit file preferred) - robots.txt controls whether engines like GPTBot and ClaudeBot can read the site at all.
Social footprint: verified profiles on X (Twitter), Facebook, Instagram, YouTube, GitHub; no detected presence on LinkedIn - consistent profiles reinforce the brand's identity across the web.
0 Reddit mentions - community discussion signals real-world reputation to AI models.
Live results from asking a general-purpose AI assistant about the brand, checked November 2026.
When asked "What is 長大 (CHODAI)?", Claude could identify the brand as of November 2026. CHODAI (長大) is a Japanese engineering consulting firm specializing in infrastructure design, particularly bridges, roads, and civil engineering projects, often working with government and public sector clients on construction and maintenance of public works. Best known for Bridge and civil infrastructure engineering consulting in Japan.
When asked "Best brands similar to 長大 (CHODAI)?", Claude would recommend 長大 (CHODAI) as of November 2026. It's a known player in Japan's infrastructure consulting sector, so it would come up naturally if discussing firms involved in public works engineering and design.
Common questions people ask in Google, ChatGPT, Claude, Gemini, Perplexity, and other AI search engines.
長大 (CHODAI)'s main competitors in Government: Nippon Koei (35/100), Pacific Consultants (61/100).
Sources: Brand Analyzer scan
長大 (CHODAI) has low AI-search visibility, scoring 20/100 on Brand Analyzer's AI visibility composite (visibility 23, trust 4, recommendation 33). This estimates how likely AI engines like ChatGPT, Claude, Gemini and Perplexity are to know, trust, and recommend the brand.
Sources: 長大 (CHODAI) official site
長大 (CHODAI) was founded in 1968. 長大 (CHODAI) operates in the Government category. It is analyzed by Brand Analyzer across seven brand dimensions and AI-search visibility.
Sources: Wikidata
長大 (CHODAI) is headquartered in Tokyo. 長大 (CHODAI) operates in the Government category.
Sources: Wikidata
長大 (CHODAI) scores 33/100 on Brand Analyzer's AI recommendation signal, indicating it is less likely to be surfaced when AI assistants like ChatGPT suggest Government options. Recommendation depends on crawlability, structured data, and category authority.
Sources: 長大 (CHODAI) official site
株式会社長大（CHODAI）は1968年に設立された日本の建設コンサルタント企業で、東京に本社を置く。人・夢・技術グループに属し、社会インフラの計画・設計・維持管理を一貫して手掛ける企業として位置づけられている。
Sources: 長大 (CHODAI) official site
長大は、橋梁や離島架橋をはじめとする社会インフラの計画・設計・維持管理業務を行う建設コンサルタントである。国や地方自治体などの公共機関向けに、長年培った専門技術力と全国的な実績を活かしたインフラ整備・維持管理サービスを提供している。
Sources: 長大 (CHODAI) official site
長大 (CHODAI) can improve AI discoverability by strengthening structured data (Organization and FAQ schema), maintaining an accurate Wikipedia/Wikidata entity, earning authoritative citations, and keeping content crawlable for AI bots. Brand Analyzer measures these as visibility, trust, and recommendation signals.
Sources: 長大 (CHODAI) official site
長大が提供するサービスには、社会インフラの計画・設計、橋梁や離島架橋を含むインフラ施設の維持管理コンサルティングが含まれる。これらは国や地方自治体などの公共機関向けに提供されている。
Sources: 長大 (CHODAI) official site
長大は、橋梁および離島架橋の維持管理事業における代表企業としての役割で知られており、建設コンサルタントとしての専門技術力と全国規模のインフラ維持管理実績が特徴とされている。
Sources: 長大 (CHODAI) official site
長大の主な利用者は、国や地方自治体などの公共機関、およびインフラ整備・維持管理を必要とする事業者である。また、インフラ分野でのキャリアを目指す就職希望者も対象としている。
Sources: 長大 (CHODAI) official site
長大 (CHODAI) scores 20/100 for AI visibility - how well ChatGPT, Claude, Perplexity and Google AI Overviews can discover, identify and cite the brand.
長大 (CHODAI) has a weak AI-visibility profile at 20/100 - a proxy for how readily ChatGPT, Perplexity and Google's AI Overviews can recognise and cite it. Its strongest area is recommendation likelihood (33/100) and its weakest is trust (4/100). It benefits from a Wikidata knowledge-graph entry, a global traffic rank of #2,230,588 (Tranco) and open access for AI crawlers (GPTBot, ClaudeBot, etc.). The main gaps holding it back: no clear Wikipedia entity to anchor it in LLM training data, thin schema.org structured data and no llms.txt to steer AI to its best pages. In a live check, Claude could already identify 長大 (CHODAI) from memory (November 2026) - a sign these signals are paying off.
The score combines seven dimensions - name quality, digital presence, visual identity, messaging clarity, trust foundation, AI discoverability, and brand authority - into a single objective benchmark.
Ranked closest to 長大 (CHODAI): Cherokee County Schools (40/100), Air Force Civil Engineer Center (AFCEC) (40/100), 中国国际问题研究院 (China Institute of International Studies, CIIS) (40/100), Evanston Township High School District 202 (40/100).
A step up - brands to learn from: Zavod za socijalno osiguranje (56/100), ZDK Gesellschaft Demokratische Kultur gGmbH (56/100).
Category leader: ABC News (96/100).
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