Domestic Presentation Video Tools Compared — SPOKES vs Video BRAIN vs RICHKA vs SpeechSlide AI

Introduction

In our previous article, we compared international services like Synthesia and HeyGen with SpeechSlide AI. This time, we compare AI presentation video tools available in the Japanese domestic market for users who prioritize Japanese language support, local customer service, and JPY billing.

This article compares three representative domestic services — SPOKES (slide-to-video), Video BRAIN (the market-share leader in business video editing), and RICHKA (marketing video specialist) — with SpeechSlide AI.

Overview of Each Tool

SPOKES（スポークス）

A SaaS by Change Inc. that converts PowerPoint slides into narrated videos. Adopted by major financial institutions including Norinchukingold Bank and Mitsubishi UFJ NICOS.

• Generates AI voice from scripts entered in PowerPoint notes. Converts to video in as fast as 1 minute.
• 6 AI voices (3 male, 3 female) with intonation adjustment controls.
• Supports approximately 30 languages for narration (multi-language is a paid option). Includes auto-captioning.

Video BRAIN（ビデオブレイン）

An AI business video editing platform by Open Eight Inc. Has been the No.1 market share leader in Japanese AI video editing for 5 consecutive years.

• Template-based AI video editing for recruitment, internal communications, training, marketing, and more.
• Unlimited video creation and downloads. Designed for team use (Standard: 30 users, Enterprise: 100 users).
• Distribution partnership with TOPPAN, with extensive enterprise adoption track record.

RICHKA（リチカ）

An AI video platform by Cocktail Make Corp. specializing in marketing and advertising video production. Used by over 400 companies including Yahoo! JAPAN, Seven Bank, and Kodansha.

• 1,000+ video format templates and 2,000+ social media ad "winning formats."
• AI Assist automates fine-tuning after material input. 100+ pro creators add new formats monthly.
• Optimized output for platform-specific sizes and formats (Instagram, YouTube, TikTok, etc.).

SpeechSlide AI

A SaaS by ARNE Technologies Inc. that auto-generates AI-narrated presentation videos from slides. Simply upload slides and AI automatically generates scripts, synthesizes voice, and produces the final video in one seamless workflow.

• Specialized for slide-led video production. End-to-end workflow from PPT/PDF upload through AI script generation, voice synthesis, and video output.
• AI analyzes slide content and auto-generates presentation scripts. No manual script writing required.
• 9+ languages supported. TTS engine selectable from OpenAI / Google / Gemini. Free plan available.

Feature Comparison

When the goal is creating presentation videos, the following five axes significantly influence adoption decisions.

Pricing Comparison

Pricing comparison based on publicly available information as of February 14, 2026. Video BRAIN pricing is not publicly disclosed, so only the plan structure is listed.

AI Script Generation — The Key Differentiator

The most significant difference from domestic services is AI script generation. SPOKES can convert slides to video, but narration scripts must be manually entered by users in PowerPoint notes. Video BRAIN and RICHKA don't have a direct slide-to-video workflow at all.

With SpeechSlide AI, AI analyzes the uploaded slide content and automatically generates appropriate presentation scripts for each page. Users simply upload their slides, and a narrated presentation video is ready in approximately 15 minutes.

Especially for enterprises that want to convert large slide inventories to video, or researchers creating conference presentation videos, whether scripts are auto-generated or not creates a significant difference in workload.

Recommendations by Use Case

Academic & Research

For academic conference videos, content accuracy and multi-language support are critical. For researchers who want to minimize script writing time, SpeechSlide AI — with AI script generation and 9-language output — is the optimal choice.

Corporate Training & Education

For converting existing training slides to video, SpeechSlide AI enables bulk conversion without script writing. If you need strict internal script review, SPOKES is an option but requires ¥48,000+/month with annual contracts. For enterprises needing full video editing, Video BRAIN is also worth considering.

Marketing & Advertising Videos

For social media ads and promotional video production, RICHKA's template library and ad format optimization are powerful. However, this serves a different purpose from slide-based presentation videos, so choosing by objective is important.

Individuals & Small Teams

Most domestic services are priced at tens to hundreds of thousands of yen per month, with setup fees of ¥100,000-200,000 and mandatory annual contracts — a very high barrier for individuals and small teams. SpeechSlide AI starts free and creates up to 30 videos/month at just ¥2,200/month (tax included). That's roughly 1/22 the cost of the cheapest domestic competitor (SPOKES at ¥48,000/month), making it accessible to individual researchers, freelancers, and startups.

Other Notable Services

Beyond the three services above, there are other notable AI video-related services in Japan. Here is a brief overview for reference.

AI Shorts（エージェンテック社）

Launched January 2025. Upload PDF/PowerPoint and AI analyzes content to auto-generate narrated videos. Similar concept to SpeechSlide AI, but pricing is not public and it's enterprise-focused, making it less accessible to individuals.

Vyond（日本代理店：ウェブデモ株式会社）

Animation video creation tool. Strong for training/education animation but lacks auto-generation from existing slides. From ¥121,000/year (Starter). Credit point system introduced May 2025.

Voice Presenter Pro（AH-Software社）

Desktop software (Windows only) for creating narrated videos from PowerPoint. Uses VOICEPEAK TTS with fine emotional/intonation control. One-time purchase at ¥15,840, but no AI script generation — all scripts must be manually entered.

Conclusion

Each domestic AI video service addresses different needs. SPOKES excels at slide-to-video, Video BRAIN at general video editing, and RICHKA at marketing videos.

However, SpeechSlide AI is the only domestic option offering a complete end-to-end workflow of "upload slides → AI generates scripts → narrated video." On pricing, while domestic competitors charge ¥48,000-200,000/month plus ¥100,000-200,000 setup fees with annual contracts, SpeechSlide AI requires zero setup fees, no contract lock-in, and produces up to 30 videos/month at just ¥2,200/month (tax included). At approximately ¥73 per video, it offers an exceptionally strong cost advantage in the domestic market.

For those considering video creation from existing slides — academic presentations, training materials, or sales decks — we recommend starting with SpeechSlide AI's free plan and comparing results with other services.

Official Reference Links

These official pages were used as primary references for this article (checked on 2026-02-14). Re-verify before procurement because pricing/specs may change.

SPOKES

• https://www.spokes-online.jp/

Video BRAIN

• https://video-b.com/
• https://video-b.com/plan/

RICHKA

• https://richka.co/lp/
• https://richka.co/price/

SpeechSlide AI

• https://speechslide.com/en/pricing