Born in the chaos of Nigeria’s overburdened hospitals, Intron is now one of Africa’s most promising voice AI startups – outperforming global tech giants like OpenAI, Google, and AWS in recognising African accents.

Founded by Dr. Tobi Olatunji and Olakunle Asekun, Intron began as a speech-to-text tool for doctors. But the early results were dismal. Doctors abandoned the app because it slowed them down. Still, the problem was urgent: clinicians overwhelmed with patients, errors piling up, and lives at risk.

Fueled by that urgency, Intron went back to the drawing board. The result was Sahara, a suite of speech tools built from scratch for African voices. Trained on over 3.5 million audio clips from more than 18,000 speakers in 30+ countries, Intron now claims over 92% accuracy across 300+ African accents.

The impact is already visible. In Nigeria’s Ogun State Judiciary, Sahara slashed court transcription times. Uganda’s C-Care hospitals report fewer documentation errors. Fintech firm Branch International uses Intron to cut call center wait times. Unlike imported models, Intron handles African names, currencies, and local terminology seamlessly.

Intron’s voice platform now includes:

Sahara-Optimus (general voice recognition)
Sahara-TTS (text-to-speech for African languages)
Sahara-Voice-Lock (voice authentication)
Sahara-Titan (cross-language transcription and translation in 20 major African languages)

With only a 20-person team, Intron supports 40+ organisations in 8 countries. It raised $1.6 million in 2024, joined NVIDIA’s Inception programme, and partnered with Google Research and the Gates Foundation for benchmarking.

But the challenges are steep: data collection is costly, hardware limitations persist, and Big Tech could close the performance gap. Yet Intron’s Africa-first focus gives it an edge in a market where Silicon Valley tools still fail to understand local voices.

“Intron isn’t trying to catch up,” said Olatunji. “We’re building for the hardest accents first – and that means we’re ready to scale.”

By designing for Africa’s linguistic and infrastructural realities, Intron may do more than match global standards – it could redefine them.