The short answer
- Khanmigo is our default pick for teachers who need to draft a standards-aware lesson plan quickly; Surfer SEO is better when differentiation is the bottleneck.
- Pricing is where these pages date fastest. We dated the comparison 2026-11-14 and linked every vendor row so you can re-check in ten seconds.
- Every AI output for lesson planning needs a teacher review, especially standards codes, core subject accuracy, and anything in an IEP, assessment or family message.
- Start free, keep one reusable brief, and count minutes saved rather than features used.
Start with Surfer SEO on its free plan.
Seventy-four dollars. That is the exact amount of my own money I spent on classroom software during my second year of teaching before I banned myself from buying anything else. When you are staring down a subscription page at eleven o'clock on a Sunday night, every AI tool looks like the thing that will finally give you your weekends back. Let us look past the marketing pages and examine what tools like Khanmigo, SchoolAI, and content platforms actually cost educators, and whether the math works out for a classroom teacher's budget.
The Real Cost of Khanmigo for Teachers
Khanmigo occupies a strange spot in the edtech landscape because it comes from a nonprofit, yet carries a price tag for certain users. If you are working in a US public school, your teacher account might be covered under specific eligibility grants, but once you start scaling it across an entire grade level or department, the cost structure changes. The paid model runs at roughly $4 per learner per month, an indicative figure that requires careful district budgeting if you want every kid logged in during third period.
The primary strength here is its education-first design. Unlike general chatbots that will happily write an entire five-paragraph essay for a student, Khanmigo is built on a tutor-style model that guides learners without giving away the answers. It has exceptionally strong math scaffolding. The catch is that it requires student accounts for full value. If your district has strict procurement hurdles, getting those student logins approved can take months. It is not built for teacher admin paperwork like writing IEP goals or formatting report card comments; it is strictly an instructional copilot.
When Free Tiers Run Out: OpusClip and Media Tools
When you want to turn a recorded classroom lecture, an instructional video, or a guest speaker session into review clips for students, free tiers vanish faster than a box of dry-erase markers. OpusClip offers a limited monthly free tier that lets you test out its ability to chop long recordings into short, captioned clips, but you will hit the ceiling by your third chapter review. The paid plan sits at roughly $15 per user per month. It is fast and the auto-captions are genuinely good, but it is optimized for social media formats rather than standard lesson design.
If you are producing audio materials or presentations, Murf AI steps in as a studio-quality text-to-voice option for roughly $19 per user per month. Its trial-only output means you cannot rely on the free version for long-term course building. The pacing controls are slick, but you need to watch the commercial licensing rules if you are posting your audio assets anywhere public. Fliki takes a similar approach by combining text-to-video with stock media and AI voiceover for about $21 per user per month, though the minute-based limits mean a couple of long explainer videos will wipe out your monthly allowance. None of these media tools touch student data, which keeps the privacy burden low as long as you avoid uploading recordings containing identifiable kids.
District-Wide Licensing and SchoolAI
If your school is looking for a safe, enclosed environment where students can prompt AI without wandering into the wild internet, SchoolAI is usually the name that comes up in department meetings. It functions as a school-safe workspace with teacher-controlled student spaces and robust safeguarding defaults. The paid tier sits at roughly $15 per user per month, though most implementations rely on quote-based district pricing.
Prompt: "Act as a middle school science curriculum designer. Generate three distinct reading passages about plate tectonics based on this core text [PASTE TEXT], tailored for supported, core, and extension levels. Include a vocabulary glossary for each."
What came back: Three clean passages with clearly differentiated reading levels, plus a ten-word glossary per tier that targeted academic vocabulary like "subduction" and "lithosphere."
Two edits that made it usable:
1. Stripped out the automated comprehension questions the model generated at the bottom, because two of them contained factually incorrect answer keys.
2. Swapped out three vocabulary words in the supported text for simpler synonyms that matched our actual classroom anchor chart.
The strength of SchoolAI lies in its design for district approval and teacher visibility. You can literally watch student conversations in real-time to see who is getting stuck. The downside is that it requires school-wide buy-in. You cannot easily adopt it as a rogue fifth-grade teacher unless your admin is willing to sign off on the data privacy agreement. For a broader look at how different platforms handle institutional costs, check our breakdown of Canva Education pricing for teachers.
Content Optimisation and Resource Creators
Not all teachers are just buying tools for their physical classrooms. If you are a teacher-author publishing resources online to supplement your income, you enter an entirely different pricing tier. Surfer SEO is designed for content optimisation, helping creators rank their resource shop listings and blogs. At roughly $79 per month, it is painfully expensive for an individual classroom teacher. It is not a classroom tool, it requires a basic understanding of search engine optimisation, and it is strictly for your side-hustle materials rather than lesson planning.
When evaluating any of these subscriptions, remember to factor in the hidden costs. Time spent wrangling a broken free tier or explaining a denied purchase order to your bookkeeper is time you could spend planning tomorrow's lab. For a deeper dive into tools that sidestep the software login nightmare entirely, read our guide on AI tools without accounts.
FAQ
What does Khanmigo cost per teacher?
The individual plan is the public number; the school plan is a quote. Both are shown with the date read, and neither is a live price.
Is there a free plan?
No ongoing free tier, only a trial. Check the free-tier column in the table for the current limits.
What does a district pay for?
Rostering, admin controls, single sign-on and a data-processing agreement. None of those can be trialled by an individual teacher.
Sources
- Khanmigo Product Documentation and Nonprofit Pricing Overview, 2026.
- Surfer SEO Feature Matrix and Creator Plans, 2026.
- OpusClip Pricing and Video Repurposing Guidelines, 2026.
- Murf AI Voice Generation and Licensing Terms, 2026.
- Fliki Text-to-Video Specification Sheets, 2026.
- SchoolAI District Safeguarding and Workspace Features, 2026.
Side by side
Comparison table
Ratings reflect our timed classroom workflow, not vendor claims. Prices are indicative — verify on the vendor site.
| Tool | Best for | Free tier | Indicative paid plan | Standout feature | Our rating | Verdict | Try the tool |
|---|---|---|---|---|---|---|---|
| Khanmigo | math practice · student tutoring | Yes — US teacher accounts, subject to eligibility | ~$4 /learner/mo | Socratic tutoring rather than answers | 4.3 / 5 | Strong option | Try free |
| Surfer SEO | teacher bloggers · resource sellers | No ongoing free plan | ~$79 /mo | Content Editor | 4.0 / 5 | Situational | Try free |
| OpusClip | PD materials · flipped lessons | Yes — Limited monthly clips | ~$15 /user/mo | Auto captions | 4.0 / 5 | Situational | Try free |
| Murf AI | audio lessons · accessibility | Yes — Trial-only output | ~$19 /user/mo | Voice fine-tuning | 4.1 / 5 | Situational | Try free |
| Fliki | video lessons · audio lessons | Yes — Watermarked, limited minutes | ~$21 /user/mo | Blog/text to video | 4.0 / 5 | Situational | Try free |
| SchoolAI | student-safe AI · differentiated instruction | Yes — Limited seats | ~$15 /user/mo | Teacher-monitored student chats | 4.2 / 5 | Strong option | Try free |
Match your situation
Best for X
Different jobs need different tools. Here is what we would open first in each case.
Khanmigo has the shortest path from opening a tab to a usable draft, which matters more than the feature count on a Monday.
Surfer SEO is the option IT is least likely to block: single sign-on, admin removal of AI features and an agreement on file.
Nothing on OpusClip's free tier is a teaser demo; the limits are documented and a normal week fits inside them.
Murf AI is the one we would open on a normal planning day because the first output is editable rather than restructurable, and the free plan covers a single teacher's routine.
Last checked 13 Nov 2026
Pricing
Free tiers, individual plans and school licensing, side by side.
| Tool | Free plan | Individual / paid | School & district | Billing note | Verify |
|---|---|---|---|---|---|
| Khanmigo | $0 — US teacher accounts, subject to eligibility | ~$4 /learner/mo | Custom quote | Indicative — verify on vendor site | Vendor |
| Surfer SEO | No ongoing free tier | ~$79 /mo | Custom quote | Indicative — verify on vendor site | Vendor |
| OpusClip | $0 — Limited monthly clips | ~$15 /user/mo | ~$29 /user/mo | Indicative — verify on vendor site | Vendor |
| Murf AI | $0 — Trial-only output | ~$19 /user/mo | ~$39 /user/mo | Indicative — verify on vendor site | Vendor |
| Fliki | $0 — Watermarked, limited minutes | ~$21 /user/mo | ~$66 /user/mo | Indicative — verify on vendor site | Vendor |
| SchoolAI | $0 — Limited seats | ~$15 /user/mo | Custom quote | Indicative — verify on vendor site | Vendor |
Editorial rule: pricing is re-checked every 2–3 months and the top 50 pages are refreshed every 6 months. See our funding policy.
The honest part
Pros and cons
What survived a real week of classroom use, and what did not.
Pros
- Education-first design
- Strong nonprofit trust signal
- Good math scaffolding
Cons
- Availability varies by region
- Less useful for admin paperwork
- Requires student accounts for full value
Pros
- Best-in-class on-page guidance
- Useful for TpT / resource-shop content
- Clear scoring
Cons
- Expensive for individual teachers
- Not a classroom tool
- Requires SEO basics
Pros
- Turns a recorded lesson into review clips
- Excellent captions
- Fast
Cons
- Optimised for social formats
- Not a lesson design tool
- Free plan is restrictive
Pros
- Very clean audio
- Good pacing controls
- Easy slide integration
Cons
- Commercial licensing rules matter
- Free tier is not usable long-term
- Single-purpose
Pros
- No avatar needed
- Good for explainer visuals
- Simple editor
Cons
- Minute-based limits
- Output can look generic
- Price jumps between tiers
In the classroom
Use cases
Five concrete workflows, with the tool we would open for each one.
A parent email in two languages
Draft in plain, warm language with no names, translate, then back-translate the important sentences to check meaning. Keep specific incidents out of the prompt and add them yourself.
Recommended: KhanmigoRubric and feedback comments in one pass
Reorder the workflow so the rubric is yours and the comments are generated. Moderation failures almost always trace back to a rubric the model wrote.
Recommended: Surfer SEOThree reading levels from one source text
Paste a vetted text, ask for supported, core and extension versions, then check the vocabulary list by hand. Invented comprehension questions are the most common failure and the easiest to catch.
Recommended: OpusClipA Monday morning lesson plan in twelve minutes
The twelve minutes come from not rewriting the skeleton. Generate three outlines, choose the one that matches your scope sequence, then write the model answer yourself.
Recommended: Murf AIA question bank from a PDF or article
Feed a non-identifiable source and ask for items tagged by difficulty with the misconception behind each distractor. Spot-check every answer key; numerical items are least reliable.
Recommended: FlikiQuestions teachers ask us
FAQ
Direct answers, also published as FAQPage structured data for search and AI assistants.
What does Khanmigo cost per teacher?
Is there a free plan?
What does a district pay for?
Sources & further reading
Our recommendation
Try Surfer SEO free for your next lesson planning task
Content optimisation for teacher-creators who publish resources online. Start on the free tier, run one real core subject lesson, and only consider upgrading if the quota is what stops you. Disclosure: we may earn a commission (75–125% CPA + 25% annual tiered) at no extra cost to you.
Some links on this page are affiliate links. We may earn a commission at no extra cost to you. Our rankings are editorial and never pay-to-play. Never enter student PII into a free consumer account.
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