Fed the dog {{ FIRSTNAME | there }}? A PetTech startup is under fire after its AI-powered automated pet feeders went offline for days on end. Obvs a lot of hungry cats and dogs all round, and the owners are fuming. What meow? ๐ธ
In Today's Open Letter
Education: More learners taught with fewer teachers.
Local: Inflation eases and your power bill dips.
Global: ChatGPT for Teens lands at 900m users.
Now in AI: Grok Bot works while you sleep.
Chart: Why a healthy diet is out of reach here.
Work Smarter: She turned away paying customers.
โณ Last chance to get early bird tickets
Weโve got Discovery co-founder Barry Swartzberg and 3 Capital Ventures founder Sizwe Nxumalo coming to Joburg for our next event on 17 September.
Itโs always such a vibe, but you gotta hurry: the early-bird tickets are going fast, and todayโs your last day to secure one.
TRENDING NOW
Getting more of SA educated (with fewer teachers)
SA schools are losing teachers while 81% of Grade 4s can't read for meaning and 40% of Grade 1s never reach matric, so this former teacher and his wife made a plan with videoโฆ
It's no secret that South Africa has an education problem. But this year, it's gotten worse: the government centrallyย approves teacher wage hikes, but the National Treasury only partially funds them, forcing provinces to cut teachers.
The Western Cape, given just 64% of the wage bill's cost, froze non-teaching recruitment and cut 2'407 teacher posts from January 2025. Gauteng raided transport and nutrition to save 3'400 posts while KwaZulu-Natal's R4bn shortfall couldn't cover 11'092 teachers' salaries.
And obvs SA has too many learners per classโฆ

It's something former teacher Leopold van Velden knows too well, having taught classes with up to 67 pupils in some places in SA through his career. So he and his wife (and co-founder) Silke Rothkegel van Velden built a video-based solution.
The local public-benefit co bringing the syllabus to YouTube
Thuma Mina Teaching turns the Grade 7 to 9 CAPS curriculum, EMS, History, Geography and Natural Science, into free video lessons on YouTube. No login, no fee, in just one click.
And they're not screen-recordings over a slide: Each lesson runs through a subject specialist, learning designer, peer reviewer, presenter and editor (45 hours of work) and costs upwards of R20k to produce.
They're hit, though: A cool 10 million views by 210 unique learners per term, which makes the cost around R5 per learner, per subject, for the whole year.
It's a public-benefit non-profit, but there's some inspiration here for others:
Views climb dramatically as exam time approaches
And don't think that your poorer areas can't afford the data to get the information they need.
Thuma Mina Teaching at a Glance
Reach: 10m+ lesson views, ~210,000 unique learners a term
Cost: R20,000+ and 45+ hours to make one lesson, about R5 per learner per subject a year with a near-zero marginal cost to reach more learners
Curriculum: Grade 7 to 9 CAPS, free on YouTube, no login needed
Proof: 91% pedagogy rating (Education Alliance Finland).
Backing: Capitec-funded non-profit, Injini Top 50 EdTech in Sub-Saharan Africa (2023 & 2024)
In a country losing teachers, the answer might not be complex AI or building humanoid robot teachers after all; just recording what we currently have and making that available could go a long way already.
We're watching this space (and their videos)โฆ
TRENDING IN AI
3 Things in AI this week
What if you could hand a task to AI and just walk away? xAI's Grok Bot gives each bot its own cloud computer, signs into your tools with your logins, and works through multi-step jobs solo, researching accounts overnight and leaving drafted emails for your approval by morning. The race has moved from AI that drafts to AI that does.
Is the next data centre made of neurons? DayOne, Cortical Labs and NUS Medicine switched on Singapore's first biological data centre, living human neurons grown from stem cells, integrated with silicon, processing information dynamically.
Could your AI model be discriminating without anyone noticing? A Dutch court halted a government fraud-detection system for violating human rights. Praelexis breaks down the six ethical risks that live inside the algorithms themselves, not the infrastructure. Read it here.
Brought to you by Praelexis
With over a decade of experience in AI, Praelexis custom-builds solutions to solve problems in finance, health, agriculture and more.
MEET THE FOUNDER
Looking for a community of founders and builders to help you go next level?
Nearly two decades building brands where tech and humanity intersect.
At FindHomes, you search the way you'd actually describe a home.
Teaches qigong and lives on an olive farm, so launching a low-tech break-away day for founders called Fallow.Day โ Open Letter readers get 25% off on Thursday 3 Sept 2026: use code FDOPEN26 in the referral box on the form.
Founders like Jo don't build alone, and neither should you. Check out our founder community, The Founder Collab, where SA founders swap the isolation of building alone for weekly accountability, honest feedback and a room full of people who get it.
IN SHORT
Cause dropping a headline or two at the braai never hurt anyoneโฆ
๐ The Relief Is Imported. SAโs inflation eased to 4.3% in July from 5%, below consensus, but core inflation went the other way, up to 4.2%. That's the fuel shock unwinding, not underlying pressure easing. If you're budgeting for next year, plan against 4.2% and rising.
๐ Age Prediction Does the Gatekeeping. ChatGPT for Teens went live globally on Tuesday, auto-enrolling anyone OpenAI's classifier estimates is under 18, with no accuracy figures published. If you ship anything consumer-facing, age assurance is now product infrastructure, not a nice-to-have.
โก 1% Off a 900% Rise. Eskom and municipalities are barred from recovering bad debt through tariffs, worth 1% to 2.5% off your bill. Take it, but the real news is Nersa's new 10-year price forecast, the first time you can model electricity as a known input cost.
๐ช Way More Spaza Shops. Lesaka now sees SKU-level sales across 90'000 spaza shops and taverns to sell to FMCG brands. Only problem is that's way more spazas than the government has verified. The founder lesson: your payment rails are a measurement layer, and the measurement is often worth more than the processing fee.
๐ Global Reach Built. World-class futurist John Sanei has the insight but needs consistent global visibility. So FDC turned LinkedIn into a positioning engine that's driven 6.7 million impressions, 31k+ profile views and steady inbound demand from global audiences.*
* From our partners. Find all the best service providers for your business in our Founder Stack.
WORK SMARTER
She turned away paying customers, on purposeโฆ
Most SA founders scramble to sign any trial customer they can get. One SA founder did the opposite, refused the inbound, and four years later her platform screens around $5bn a month across 70+ countries. The approach has a name that almost nobody here is using.
Here's the design partner approach, where it comes from and why she chose it.
WHAT YOU SAID
Read the fine print
Yesterday, we showed you Jem's new HR platform, asking for your honest first reaction to free HR software. Most here are reaching straight for the T&Csโฆ
๐ฉ๐ฉ๐ฉ๐ฉ๐ฉ๐ฉ ๐ง Nothing is free. I'm reading those T&Cs like a divorce settlement (72%)
๐จโฌ๏ธโฌ๏ธโฌ๏ธโฌ๏ธโฌ๏ธ ๐ญ I've paid per employee for years. Please stop talking (9%)
๐จโฌ๏ธโฌ๏ธโฌ๏ธโฌ๏ธโฌ๏ธ ๐ฒ My current HR system is a WhatsApp group and blind hope, so yes (19%)
UP OR DOWN?
A graph that matters
Eating healthy costs the same in SA as it does in Europe, yet 60% of Southern Africa can't afford to eat healthy.

The further right a region is, the more expensive healthy food options are, but the higher up on the chart, the fewer people can afford it.
Via The Outlier
๐ก Southern Africa sits at roughly $4.20 equivalent a day per person (similar to Europe), but 60% of our people canโt afford to eat healthily.
๐ก Interesting to note that Northern Africa fares way better, while Middle Africa, with among the lowest prices, has even lower affordability (80% canโt afford a decent meal).
A super interesting chart, but we canโt help but feel the affordability is skewed by lack of formal vs informal trade and market numbers. Either way, itโs another indicator that SA as a country needs to demand more from our law- and policymakers to promote growth and business, so that we can use our economy to help more people enjoy a healthy meal every day.
LOOKING TO NETWORK?
SA business events coming up
Digital Divas Summit 2026, 28 Aug, Cape Town: A full day on career growth, AI, ambition and visibility, built around the theme SHIFT. R1'199. Get tickets.
Venture Summit at LeaderEx, 1 Sept, Sandton: Founders, funders and the people writing the cheques in one room; Jason and Renier will be there, so come say hi โ use code TOL to get a free ticket (Open Letter reader perks, yโall). More info.
Startup Stories: Bionuclex Research, 2 Sept, Cape Town: The team chasing multi-cancer early detection from a single blood draw, over lunch at OneBio. R50. Join here.
Powered by Radi. Want your business event in front of 36,000 The Open Letter readers? Host it on Radi, and it lands here.
AROUND THE WEB
The most fun todayโฆ
๐ช Next Level: Check this girl's insane knife-throwing skills. See the clip.
๐ฑ Wow Site: Full Talk Time is a dumb phone simulator that lets you write and share 160-character messages like it's 2005.
NEXT STEPS
Hereโs how to get more
Join our online community built for founders and startup/tech enthusiasts called The Founder Collab.
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