SpeakBuddy

What SpeakBuddy does

SpeakBuddy (株式会社スピークバディ) is a Tokyo-based edutech company that develops and operates an AI-powered English conversation learning platform targeting Japanese learners and enterprises. Founded in 2013 and headquartered in Nihonbashi, Tokyo, the company serves consumers through a mobile app (AI English Conversation / AI英会話) distributed on iOS and Android, alongside premium human coaching services (Coach Buddy / コーチバディ) and a content media platform (SpeakBuddy English Learning Q&A). The core app combines speech recognition, generative AI, natural language processing, and machine learning grounded in second language acquisition theory to deliver personalized speaking practice with AI buddy characters, CEFR-J-based level assessment, and 1,000+ structured conversation scenes.

The company's revenue model is built on three subscription streams: a consumer AI app subscription priced at 3,980 JPY per month or 28,400 JPY annually (with a 3-day free trial), tiered coaching programs ranging from 283,800 JPY (Basic, 12 weeks) to 787,600 JPY (Master Plus, 24 weeks) billed as upfront multi-week commitments, and enterprise B2B contracts for corporate English training and employee benefit programs. The go-to-market motion blends product-led growth (app store distribution with a free trial funnel) with enterprise field sales — SpeakBuddy claims over 300 corporate clients as of November 2025, up from 100+ in September 2024 — and event-driven awareness through media coverage and the SoftBank 'Daredemo AI' partnership announced in April 2026.

SpeakBuddy is privately held and venture-backed, having raised a cumulative total of 1.85 billion yen across multiple rounds (including a Series 2 from Global Brain in 2020 and a 2024 round from Golden Asia Fund, Mitsubishi UFJ Capital, Mizuho Capital, and Future Creation Capital), with the most recent capital earmarked for overseas expansion into Asian markets. The company is led by representative director Tateishi Tsuyoshi (立石 剛史) and operates with an 11–50 person team drawn from Europe, the Americas, and Asia. Cumulative app downloads reached 5 million+ by early 2026, up from 3.5 million+ in September 2024.

Name

SpeakBuddy

Legal name

株式会社スピークバディ

Website

https://speakbuddy.jp

Company type

Private

Founded year

2016

Operating status

Operating

Headcount range

11–50 employees

Short description

Tokyo-based edutech company that operates an AI-powered English conversation app, premium human coaching, and a Q&A platform for Japanese learners, supplemented by corporate English training services for over 300 enterprise and institutional clients.

Ownership category

akta.pro rank

Product category

AI Language Learning Software

NAICS

Language Schools (61163)

SIC

Services-Prepackaged Software (7372)

akta.pro primary industry

AI-Powered Language Tutors, Chatbots & Speaking Practice Tools (EDAFAOAC)

akta.pro secondary industries

AI Tutoring Systems (Conversational Tutors, Homework Helpers) (EDAFAFAC), Conversational AI Platforms (chat/voice bots, orchestration) (HDAAAFAC), Conversational NLP & Dialogue Management (chatbots, agents) (HDAAADAF)

Keywords

• AI English learning
• Language learning software
• English coaching services
• Corporate English training
• Speech recognition education

Headquarters

HQ city

Tokyo

HQ country

Japan

HQ region

Asia

Offices1 record

Markets served

GTM type

B2B and B2C

Offering type

Software

Cost components

Technology or R&D, Personnel, Marketing or Sales, Operations, Infrastructure

Revenue model

1. AI English Conversation App Subscription: Monthly and annual subscription plans for the AI English conversation app distributed via iOS App Store and Google Play. All features and content are accessible with a subscription. The 12-month plan offers a discounted monthly equivalent.
2. Coaching (Coach Buddy) – Bespoke English Coaching Programs: Three tiered coaching programs (Basic, Speaking Master, Master Plus) with weekly coaching sessions, daily 1.5-hour training, and foreign instructor conversations. Billed as a one-time upfront payment per program duration.
3. Enterprise B2B – Corporate English Training & Benefits: AI English conversation and English coaching services sold as employee training and benefit programs to corporations, local governments, and educational institutions.

Pricing tiers

Go-to-market motion3 records

Distribution channels4 records

Marketing channels7 records

Core offering

SpeakBuddy operates an AI-powered English conversation learning platform offered through three integrated services: a consumer mobile app (AI English Conversation) featuring speech recognition, generative AI-driven dialogue with AI buddy characters, and personalized pronunciation feedback; a speaking-focused English coaching service (Coach Buddy) with daily 1.5-hour instructor-led practice; and a free Q&A media platform with expert English coaches. It also sells AI English conversation and coaching to corporations, local governments, and educational institutions as employee training and benefit programs.

Product overview

SpeakBuddy is a Japan-based company offering a suite of English language learning products centered around AI-powered conversation practice. The portfolio consists of three main services: the AI English Conversation SpeakBUDDY app (AI英語スピークバディ) for self-paced speaking practice with AI characters; Coach Buddy (教练バディ) for intensive speaking-focused coaching with human instructors; and SpeakBUDDY English Learning Q&A (スピークバディ英語学習Q&A) for expert Q&A and curated study content. For business clients, the company provides corporate English training services for organizations seeking global talent development. The company has raised 1.85 billion yen in funding and serves over 3.5 million cumulative app downloads since 2016, with over 100 corporate clients as of 2024.

Differentiator

Problem solved

Functional benefit

Brands

• CoachBuddy (コーチバディ): A speaking-focused English coaching service offering 1.5-hour daily coaching sessions with Japanese coaches, providing personalized learning optimization for individuals wanting to become conversational in English in a short period.
• SpeakBuddy English Learning Q&A (スピークバディ英語学習Q&A)
• AI English Conversation (AI口水語 スピークバディ)

Products and services

• AI English Conversation SpeakBUDDY (AI英会話 スピークバディ) Mobile app offering AI-powered English speaking practice via dialogue with AI buddy characters. Provides speech recognition-based pronunciation analysis, CEFR-J level assessment (levels 1–10), personalized curriculum recommendation, 1,000+ conversation scenes, unit tests, and BuddyChat (OpenAI-powered free talk). Targets Japanese individual learners via iOS App Store and Google Play with monthly/annual subscriptions.
• Coach Buddy (コーチバディ / 英語コーチング) Intensive speaking-focused English coaching program offering 1.5 hours per day of personalized instruction with Japanese coaches and weekly sessions with foreign language instructors. Delivered as 12–24 week structured programs (Basic Course, Speaking Master Course, Master Plus Course) with custom curriculum, daily feedback, and accountability. Targeted at individuals seeking rapid, structured English speaking improvement.
• SpeakBuddy English Learning Q&A (スピークバディ英語学習Q&A) Free Q&A media platform where Japanese users post English learning questions and receive answers from professional English coaches. Includes curated study guides, learning curricula, and expert articles covering pronunciation, vocabulary, grammar, listening, speaking, and exam preparation. Serves as a top-of-funnel content channel for SpeakBuddy's paid services.
• Corporate Global Talent Development Support (企業・自治体・学校法人向けグローバル人材育成支援) B2B enterprise service packaging AI English conversation (sbbiz.jp) and English coaching (business.speakbuddy-personalcoaching.com) for corporations, local governments, and educational institutions. Used for global talent development, organizational globalization, overseas business expansion, and executive candidate training. Sold directly to organizations as employee training and benefit programs.

Quantifiable outcome

• 5 million+ cumulative app downloads since 2016 (with 3.5 million+ by September 2024)
• +2 more outcomes

Named customers1 record

Segments3 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration5 records

AI capability7 records

Feature7 records

Partnerships

One partnership is on record.

• SoftBank – 'Daredemo AI' ServiceflagshipGTM or Marketing Partner · 17 April 2026SpeakBuddy's AI English conversation app was featured in SoftBank's new 'Daredemo AI' service, which provides easy access to popular AI technologies. This partnership gives SpeakBuddy visibility to SoftBank's large consumer and enterprise customer base in Japan as part of a marketing and distribution collaboration.

Scale indicators3 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• Busuu: Busuu is a global language learning platform combining AI-powered lessons with community-based native speaker feedback. It competes with SpeakBuddy across consumer subscription language learning and has a comparable B2B enterprise training offering.
• Babbel: Babbel is a major subscription-based language learning platform with structured curriculum and conversational practice features. It serves a similar consumer and B2B audience as SpeakBuddy and increasingly competes in the AI-augmented language learning space.
• Duolingo: Duolingo is the world's largest language-learning platform with a consumer subscription app, gamified lessons, and recently launched Duolingo Max (AI-powered features powered by GPT-4). It competes with SpeakBuddy across both consumer language learning and increasingly in AI-tutor functionality.

Regional players

• Cake: Cake is a popular Japanese/Taiwanese short-form English learning video app that targets Japanese-speaking English learners. While it focuses on passive video-based learning rather than conversational AI, it competes for the same Japanese consumer English-learning wallet share.
• PROGRIT: PROGRIT is a Japan-based intensive English coaching service that, like SpeakBuddy's Coach Buddy, offers structured short-term programs (2-3 months) with personal trainers targeting working professionals. It competes directly for SpeakBuddy's high-end coaching customer segment in Japan.

Direct peers

• ELSA: ELSA (English Language Speech Assistant) is an AI-powered English pronunciation and speaking app using speech recognition technology to provide personalized feedback — directly comparable to SpeakBuddy's pronunciation training and AI conversation features, with similar B2B enterprise offerings.
• Cambly: Cambly connects English learners with native English-speaking tutors for 1-on-1 conversation practice via video — directly comparable to SpeakBuddy's Coach Buddy intensive coaching offering. Cambly also increasingly integrates AI features that compete with SpeakBuddy's AI conversation app.
• Speak: Speak is a leading AI-powered English conversation learning app that uses speech recognition and conversational AI to provide speaking practice. It directly competes with SpeakBuddy in the AI English tutor category, particularly in Asian markets, with similar target customers (non-native English speakers seeking speaking fluency).

Emerging players

• BoldVoice: BoldVoice is an AI-powered English pronunciation and accent training app targeting non-native professionals. It overlaps with SpeakBuddy's pronunciation training feature, focusing on accent reduction through AI-driven feedback for business professionals.

Others

• Tutoring For All / OneMile: OneMile (formerly known as Tutoring For All) is a Japanese online English conversation service that connects learners with foreign instructors — adjacent to SpeakBuddy's coaching tier, providing human-led conversation practice as a complementary or alternative offering.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• Xx.com/SpeakBUDDY_Ltd
• YouTubeyoutube.com/channel/UCv9F_4F_5wFvzGFTx9bdJgQ
• Facebookfacebook.com/speakbuddyltd

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Funding overview

Funding rounds8 records

Investors13 records

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about SpeakBuddy