If you subscribed to every service individually

Estimated cost of subscribing to each major single-purpose AI service (as of May 2026)

Individual subscriptions

ChatGPT Plus
Text chat (GPT-5)
¥3,000
Claude Pro
Text chat (Sonnet 4 / Opus)
¥3,000
ElevenLabs Creator
TTS / voice cloning
¥3,300
Midjourney Standard
Image generation
¥4,500
Runway Standard
Video generation
¥2,250
HeyGen Creator
Lipsync avatar video
¥4,000
Vapi voice agent (low volume)
Phone AI bot
¥4,000

Total¥24,050/mo

KOTONIA PREMIUM (all in one)

All 7 categories above + ReAct agent + booking bot + group Wiki + public personas + Sassy English Tutor and more.

Price¥10,000/mo

Saves ¥14,050 / month (58% off)
That's ¥168,600 saved per year

Why bundling matters beyond price

Subscribing to 7 single-purpose services has hidden costs beyond money. Kotonia, as an integrated AI workspace, optimizes for cost, experience, and choice simultaneously.

1. Zero management overhead

7 accounts = 7 invoices, 7 payments, 7 cancellation flows. Kotonia is 1 account, 1 invoice, 1 support channel.

2. Cross-feature persona

The same persona shows up in chat, voice, and lipsync video. Other services force you to rebuild the same character per service.

3. Free comparison and switching

Switch between Claude / GPT / Gemini / DeepSeek with one click. Multi-model comparison (same prompt across 6 models in parallel) is built in.

6 categories, all in one plan

Text, voice, vision, agents, business tools, content — full-stack coverage

Text AI (Multi-LLM)

9 models in normal chat, 25+ models in ReAct agent mode

✓Claude Opus 4.6 / Sonnet 4.5
✓GPT-5 / 5.4 / 4.1 family
✓Gemini 3 Pro / 3.1 Pro / Flash
✓DeepSeek V4 Flash / Pro
✓Grok 4.20 Multi-Agent
✓Qwen3 / Llama 3.3 / Gemma 4 / Nemotron

Voice AI

11-language TTS, real-time voice chat, voice cloning, voice design

✓Qwen3-TTS (11 languages incl. JA / EN / ZH / Yue / KO / ES / FR / DE / PT / IT / RU)
✓Irodori-TTS (Japanese-focused, TRT-optimized)
✓VoiceVox (multiple Japanese speakers)
✓faster-whisper / Qwen3-ASR (multilingual)
✓Voice cloning from 3-second reference (Qwen3 Base)
✓Text-described voice design (Irodori VoiceDesign)

Vision AI

High-res image + video + lipsync avatar

✓HiDream-O1 image generation (2048×2048, 5 modes)
✓LTX-2 video (A2V / I2V / T2V, cinematic)
✓Ditto lipsync avatar (mouth syncs to voice)
✓Prompt enhancer (Gemini-based)
✓IP / Skeleton / Layout modes (subject-driven)

Agents

Autonomous task execution + Linux sandbox + custom tools

✓ReAct agent (Thought → Action → Observation)
✓E2B Linux runtime (Python + file generation)
✓Custom tools (system prompt templates)
✓Built-in web search (Brave)
✓Wiki RAG search
✓Conversation history + auto-memo extraction

Business tools (B2B)

Team collaboration, auto booking, outbound calling

✓Group chat (member invite + roles)
✓Group Wiki (Markdown + RAG)
✓24/7 booking bot (token-based public API)
✓Outbound calling (Twilio Media Stream + AI)
✓Persona admin override (system prompt diffs)
✓Group-shared custom tools

Content / learning

Public persona library and specialized characters

✓Public personas (clone + media/skills duplication)
✓Sassy English Tutor (Gemini raw audio for pronunciation correction)
✓Tech blog platform (canonical URL, multilingual)
✓How-to guides (structured data + FAQ)
✓RSS feed distribution

Why Kotonia is cheaper for everyone

Even if you only want one feature, Kotonia matches or beats single-purpose competitors — and you get everything else included.

Solo Creator

Midjourney alone ¥4,500/mo → Kotonia gives you image + voice + video + characters

→ Run the same character through image, voice, and video for SNS posts — drastically cuts production time

Developer

Claude Pro alone ¥3,000/mo → Kotonia gives you 25+ models + ReAct + runtime

→ Pick the right model based on real output, not vibes; agent automation is standard

Language Learner

ElevenLabs Creator alone ¥3,300/mo → Kotonia gives you 11 languages + character chat + pronunciation feedback

→ Emotional-memory learning, roleplay practice, and Gemini raw audio for direct pronunciation judgment

Small Business

Vapi alone ¥4,000+/mo → Kotonia gives you booking bot + outbound calling + team chat

→ Zero missed after-hours leads, Twilio pass-through pricing for affordable AI phone ops

CONCLUSION

¥24,050 worth of features for ¥10,000/mo

Kotonia isn't trying to be the best-in-class for any single feature. Instead, it's the best total value — cheaper than competitors whether you use 1 feature or all 6 categories.

Individual total

¥24,050/mo

Kotonia Premium

¥10,000/mo

Annual savings

¥168,600

Try Kotonia now

Sign up free to instantly try chat, image generation, and voice conversation. Upgrade to Premium only after you decide it fits.

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