If you follow AI news, you have probably heard of ChatGPT, Gemini, and Claude. But on October 13, 2026, a new name entered the chat — literally. SB Intuitions launched a free beta of “Sarashina Service,” giving the public online access to Sarashina, Japan’s homegrown generative AI.
Unlike most AI launches aimed at developers and businesses, this one is deliberately for everyone: the company says the service is open to “individuals interested in trying generative AI,” and you can sign in with just a Google account — no application form, no waitlist, no credit card.
In this beginner’s guide, you will learn exactly how to use Sarashina AI step by step: how to sign in, what it can do (chat, web search, writing help, and Japanese–English translation), how to write good prompts, and how to stay safe during the free beta.
Step 1: Understand What Sarashina AI Is
Sarashina is a generative AI chatbot developed in Japan by SB Intuitions. Think of it as Japan’s answer to ChatGPT: you type a message, and it replies with helpful, conversational answers.
What makes this launch special for beginners is how open it is. Many powerful AI tools hide behind waitlists or paid plans. Sarashina’s free beta, launched on October 13, 2026, lets anyone with a Google account start chatting right away at sarashina.ai.
It is important to set expectations correctly: Sarashina is currently a beta product. The company says usage is “subject to rate limits,” which means you can only send a certain number of messages in a given time period. The beta is free, but its end date has not been announced — so it is smart to try it sooner rather than later.
Step 2: Open sarashina.ai in Your Browser
Sarashina Service is web-based, so you do not need to install anything:
- Open any modern browser (Chrome, Edge, Safari, or Firefox) on your phone or computer.
- Go to sarashina.ai.
- You should see the Sarashina Service landing page with a sign-in option.
The press release does not mention smartphone apps or age requirements, so for now the web version is the way in. Bookmark the page so you can return easily.
Step 3: Sign In With Your Google Account (Free)
This is the easiest part of the whole process:
- Click the sign-in button on the Sarashina Service page.
- Choose “Sign in with Google” (social login is supported — you do not need to create a new Sarashina-specific password).
- Pick your Google account and approve the sign-in.
- You are in — no advance application needed.
That is genuinely all it takes. Compared to tools that ask you to fill out request forms and wait days for access, this Google-login flow takes under a minute.
Step 4: Explore the Chat Interface
After signing in, you will see a familiar chat window:
- The message box at the bottom is where you type your questions or requests.
- Your conversation history appears in the main area, so you can scroll back through what you discussed.
- Because the service includes web search, Sarashina can look up current information instead of only answering from training data.
Take two minutes to look around before your first real question. Notice where new chats start and where your past conversations live — you will thank yourself later.
Step 5: Ask Your First Question in English
Your first prompt does not need to be clever. Simple questions work perfectly:
- “Explain what artificial intelligence is in simple words.”
- “Give me 5 healthy breakfast ideas for a busy morning.”
- “Write a short birthday message for my friend.”
Type your question, press send, and watch Sarashina reply. If the answer is too long, too short, or not quite right, just say so: “Make it shorter” or “Explain it like I am 12.” Conversational follow-ups are the whole point of a chatbot.
Beginner tip: One clear question beats three vague ones. “Help me write a professional email asking for a day off” gets a much better answer than “write something about leave.”
Step 6: Try Japanese–English Translation (Its Standout Feature)
Sarashina’s headline feature is Japanese–English / English–Japanese translation built right into the chat. Since the AI was developed in Japan, translation between these two languages is one of its strongest use cases.
Try this right now:
- Paste a short Japanese sentence and ask: “Translate this to English.”
- Then reverse it: “Translate this English sentence to Japanese.”
Examples to try:
- Paste: “おはようございます、今日も頑張りましょう” → ask for the English translation.
- Or: “Please translate this to Japanese: The meeting starts at 10 AM.”
This is genuinely useful if you study Japanese, work with Japanese clients, watch anime without subtitles, or read Japanese tech blogs. Language learners can also ask follow-ups like “Explain the grammar in this sentence” — the chat format makes learning interactive.
Step 7: Use Web Search Inside the Chat
Unlike some AI tools that only know old information, Sarashina’s chat includes web search, so you can ask about recent events:
- “What happened in AI news this week?”
- “What is the weather in Tokyo tomorrow?”
- “Summarize the latest announcements from SB Intuitions.”
When Sarashina uses web search, treat its answers the way you would treat any search result: useful, but worth double-checking for anything important (dates, prices, health or legal advice). Beginners should build the habit of verifying AI answers early.
Step 8: Use Sarashina for Writing Help
The service officially lists writing among its chat capabilities. Here is how beginners actually use it:
- Emails: “Write a polite email to my teacher asking for an extension on my assignment.”
- Social media: “Write 3 Instagram captions for a photo of homemade pasta.”
- School work: “Help me outline an essay about renewable energy.”
- Business: “Draft a product description for a handmade candle shop.”
Golden rule from experienced users: never send an AI draft without reading and editing it first. AI text can sound generic or get small facts wrong. Add your own voice, fix details, and the result will be far better than anything you paste raw. If your business needs polished, professional AI-assisted content at scale, a digital agency such as Digital 365 Agency can help you build the right workflow around these tools.
Step 9: Learn to Write Better Prompts
“Prompt” just means the message you type. Better prompts get better answers. Three beginner-friendly formulas:
Formula 1 — Give it a role:
“Act as a friendly English teacher and correct my sentence: ___”
Formula 2 — Specify the format:
“Summarize this article in 5 bullet points, each under 15 words.”
Formula 3 — Set the audience:
“Explain blockchain to a 10-year-old using a playground example.”
And two rules that always help:
- Be specific: include the details that matter (length, tone, audience).
- Iterate: the first answer is a draft, not a verdict. Ask for changes until it fits.
Step 10: Manage Rate Limits Smartly
The free beta comes with rate limits — caps on how many requests you can make in a time period. Here is how to make every message count:
- Batch your questions: instead of 5 tiny messages, combine related questions into one thoughtful prompt.
- Edit, don’t resend: if an answer is 90% right, ask for a fix (“make the last paragraph shorter”) instead of starting over.
- Save important answers: copy good responses into your notes app so you do not need to regenerate them.
- Come back later: if you hit a limit, take a break — limits reset over time.
Rate limits are normal for free AI betas (ChatGPT’s free plan has them too). They exist so everyone gets a fair turn.
Step 11: Stay Safe — Privacy Tips for the Beta
This step matters more than most beginners realize. According to coverage of the launch, the Japanese press release notes that during the free beta, user data may be used to improve the AI models and the service. That is common for betas, but it means you should:
- Never paste passwords, bank details, or ID numbers into any AI chat — Sarashina or otherwise.
- Avoid sharing work secrets or client data. Summarize or anonymize first.
- Read the service’s terms and privacy policy before heavy use — they are short enough to skim.
- Remember the beta can change: features, limits, and availability may shift without notice.
These habits protect you on every AI platform, not just this one.
Step 12: Know When to Use Sarashina vs Other AI Tools
You do not need to pick one AI forever. Use the right tool for the job:
- Japanese–English translation or a quick no-signup AI try → Sarashina is a great choice (free beta, Google login, translation is its strength).
- Deep research with sources → Perplexity or ChatGPT may fit better.
- Long writing projects → Claude’s free plan is popular for writing.
- Images and video → ChatGPT’s free tier covers basic image generation.
Sarashina earns its spot for two rows: the translation row and the “I just want to try an AI once, easily” row. For businesses exploring how AI assistants and automation fit into real workflows, services like Agentic Affairs specialize in practical AI automation beyond single chatbots.
Sarashina AI vs Other Free AI Chatbots
| Tool | Free access | Standout feature | Best for |
|---|---|---|---|
| Sarashina AI | Free beta, Google login | Japanese–English translation | Translation + quick first AI experience |
| ChatGPT | Free plan (with limits) | Image generation, huge ecosystem | Everyday questions and creativity |
| Google Gemini | Free plan (with limits) | Deep Google app integration | Gmail, Docs, and Android users |
| Microsoft Copilot | Free plan (with limits) | Windows and Office integration | Quick answers inside Microsoft apps |
Free plans change often, so always check each tool’s official pricing page before relying on limits.
Frequently Asked Questions
Is Sarashina AI really free?
Yes — as of October 2026, the Sarashina Service is in a free beta. You sign in with a Google account and chat at no cost, though rate limits apply. The company has not announced when the beta ends or what paid plans (if any) will follow.
Do I need a special account or a Japanese phone number?
No. You only need a Google account. There is no application form, no waitlist, and no mention of regional restrictions in the launch announcement.
Can Sarashina AI speak languages other than Japanese and English?
The officially announced translation feature covers Japanese–English and English–Japanese. The chat itself can handle English conversation naturally, and like most modern chatbots it can attempt other languages — but translation quality outside the announced pair is not guaranteed.
Is my data private on Sarashina AI?
Treat it like any free beta: assume your chats may be used to improve the service. Do not share passwords, financial details, or confidential work information. Read the terms and privacy policy on sarashina.ai for the full details.
Will there be a Sarashina smartphone app?
Not yet. The launch announcement mentions only the web service at sarashina.ai, with no smartphone apps or age requirements specified. If apps launch later, expect an announcement on the official site.
Can beginners really use it with zero AI experience?
Absolutely — that is the point of this launch. If you can type a message and click “sign in with Google,” you can use Sarashina. Start with translation or a simple question and build from there.
Final Thoughts
Sarashina AI is one of the most beginner-friendly AI launches of 2026: a free beta, Google sign-in, no forms, and a genuinely useful standout feature in Japanese–English translation. It will not replace ChatGPT or Gemini for everything, but it does not have to — it earns its place as the easiest AI to try once and the handiest translator in your bookmarks.
Try it this week: sign in at sarashina.ai, translate one sentence, ask one question, and notice how low the barrier to AI has become. And remember the beta rules — respect the rate limits and keep personal data out of the chat.
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