You are paying for ChatGPT Plus. Your colleague is paying for MagicSchool Pro. The teacher across the hall just spent $50 on a Canva subscription.
Meanwhile, four AI tools — built specifically for teachers, backed by governments and billion-dollar organizations — are sitting there. Completely free. And most educators have no idea they exist.
No trials that expire. No credit cards. No “free for 7 days then surprise.” Actually, genuinely free.
Here is what they are, what they do, and how to get access today.
1. Khanmigo — Free in 180+ Countries
Who is behind it: Khan Academy, funded by Microsoft
Cost: 100% free for teachers. $4/month for students and parents.
Available in: 180+ countries and territories (30+ languages)
Privacy: FERPA and COPPA compliant (US). Data Protection Agreements for schools.
What it actually does:
- Lesson planning: Standards-aligned, differentiated lesson plans tied to Khan Academy’s content library
- Quiz generation: Create assessments, exit tickets, and rubrics in seconds
- Student progress summaries: On-demand reports showing where students need help
- Differentiation: Generate activities for different skill levels automatically
- Writing support: Draft family emails, recommendation letters, feedback
- Content refresh: Brush up on subject matter across various areas
Honest take: Khanmigo is the best free option for most teachers worldwide. The lesson planning tools are genuinely useful, and the fact that it connects to Khan Academy’s massive content library gives it an edge over generic AI tools. The main limitation: student access requires a district-level partnership, so individual teachers get the teacher tools but cannot give students direct access.
How to get access: Go to khanmigo.ai/teachers and sign up with your school email. You need to be 18+ and an educator. That is it.
2. ChatGPT for Teachers — Free for US Educators Through June 2027
Who is behind it: OpenAI
Cost: Free (equivalent to ChatGPT Plus, normally $20/month)
Available in: US only — verified K–12 educators, staff, and administrators
Privacy: FERPA-compliant. Student data is never used for model training. SAML SSO available for districts.
What it actually does:
- Full ChatGPT Plus access: Unlimited messages with GPT-5.1 Auto
- Image generation: Create visual materials for lessons
- File uploads: Upload documents, spreadsheets, PDFs for analysis
- Search: Built-in web search for current information
- Connectors: Integration with other tools
- Secure workspace: Designed for working with classroom materials and student information
Honest take: This is the most powerful free option on this list — you are getting the full ChatGPT Plus experience at zero cost. The catch: US only, and OpenAI has not committed to keeping it free after June 2027 (they say they will keep it “affordable”). If you are a US teacher not using this, you are literally leaving $240/year on the table.
How to get access: Go to chatgpt.com/plans/k12-teachers and verify with your school or district email. Verification is handled by SheerID. Takes about 5 minutes.
3. Aila — UK Government-Funded Lesson Assistant
Who is behind it: Oak National Academy, funded by the UK Department for Education (£43 million+)
Cost: Completely free
Available in: UK only
Privacy: UK GDPR compliant. No personal data collected. Independent moderation screens for harmful content. Partially open source (GitHub).
What it actually does:
- AI lesson planning: Chat-based interface that walks you through creating a complete lesson
- 10,000+ lesson library: Uses retrieval-augmented generation (RAG) from Oak’s existing curriculum resources
- Teaching slides: Generates presentation materials for your lessons
- Quizzes and worksheets: Creates assessments with practice tasks
- Curriculum-aligned: Built specifically for the UK national curriculum
Honest take: Aila is the closest thing to a government-built AI teacher assistant in the English-speaking world. The lesson library is its superpower — instead of generating content from scratch (and potentially hallucinating), it builds on verified, curriculum-aligned materials. The downside: UK only, and it is focused on lesson planning specifically. Not a general-purpose AI tool.
How to get access: Go to thenational.academy/ai and create a free account. UK educators only.
4. AIS.chat — Germany’s Official School AI
Who is behind it: FWU (Institute for Film and Image in Science and Education), funded by all 16 German states via the DigitalPakt Schule
Cost: Completely free (monthly token budget)
Available in: Germany only (10 of 16 states active, more joining in 2026)
Privacy: Fully GDPR-compliant. EU servers only. Open source (AGPL-3.0, GitHub). Pseudonymized login via VIDIS system.
What it actually does:
- Lesson preparation: Create lesson plans, worksheets, and assignments
- Differentiation: Generate materials for different learning levels
- Learning scenarios: Configurable AI scenarios shareable via QR code
- Student access: Students can use AI through teacher-created links (no separate account needed)
- Fictional dialogue partners: Practice conversations and role plays for students
Honest take: AIS.chat (formerly called “telli” until May 2026) is the gold standard for data privacy in education AI. It is the only tool on this list that is fully open source, government-operated, and gives students direct access through teacher-controlled links. The trade-off: it is not the most powerful AI model out there, and it is Germany-only. But if you teach in Germany, this should be your default tool for anything involving students.
How to get access: Ask your school administration. Access is through your state’s VIDIS identity system at ais-chat.schule.
Quick Comparison: Which One Is Right for You?
| Feature | Khanmigo | ChatGPT for Teachers | Aila | AIS.chat |
|---|---|---|---|---|
| Country | 180+ countries | US only | UK only | Germany only |
| Cost | Free (teachers) | Free (until 06/2027) | Free | Free |
| Best for | Lesson planning + assessment | Everything (most powerful) | Curriculum-aligned lessons | Privacy-first + student access |
| Student access | District only | No (teachers only) | No (teachers only) | Yes (via teacher links) |
| Open source | No | No | Partially | Yes (AGPL-3.0) |
| Privacy standard | FERPA/COPPA | FERPA | UK GDPR | EU GDPR (strictest) |
| Backed by | Microsoft + Khan Academy | OpenAI | UK Government | 16 German States |
What About the Rest of the World?
If you teach in Canada, Australia, or another country not covered above, your best option right now is Khanmigo — it is the only tool on this list available in 180+ countries.
Beyond that, check if your school or district has negotiated free access to any AI tools. Many districts have agreements with Google (Gemini for Education comes free with Google Workspace) or Microsoft (Copilot for Education).
And if none of these work for your situation, our AI for Teachers guide covers the best paid and free options with practical prompts you can use today.
The Bottom Line
Four AI tools. Built for teachers. Backed by governments and major organizations. Completely free.
The gap between “I cannot afford AI tools” and “I am saving 10 hours a week” is not $20/month. It is knowing these exist.
Now you know.
Sources
- Khanmigo for Teachers — Official page
- Khan Academy Blog: Khanmigo in 180+ Countries
- ChatGPT for Teachers — OpenAI
- Aila — Oak National Academy
- GOV.UK: Aila Algorithmic Transparency Record
- AIS.chat — Official platform
- FWU Press Release: telli becomes AIS.chat
- GitHub: AIS.chat (Open Source, AGPL-3.0)
Last updated: May 2026
