Translation for the languages the internet forgot

Tarjumi is a production translation API for African languages — Kikuyu, Swahili, Luo, Luganda, Somali and more. Independently benchmarked, and measurably better than base models exactly where it counts: low-resource languages and specialised domains like health. One API call.

Live, and in use.

In production with a paying client. Everything we claim about it is measured, not asserted — the quality numbers come from an independent benchmark you can read.

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Translation API
Tarjumi

Neural machine translation for 16 African languages. Kikuyu, Swahili, Luo, Luhya, Kalenjin, Somali, Amharic, Yoruba, Zulu, and more — the languages other translation APIs forgot. One API call. Production-ready.

Free tier available. No card required. Start translating in 60 seconds.
Live
curl api.thexi.dev/v1/translate
{ "text": "Good morning",
  "target_lang": "sw" }
→ "Habari za asubuhi"
Get API key — free
Sign Language Interpreter
Ishara

Real-time Kenya Sign Language to text and speech, running entirely in the browser — no app, no server, no internet required. Built for the 300,000 Deaf Kenyans other tools forgot.

Live

Research-first. Product-second.

We don't build tools and then look for problems. We study systems, find the structural gaps, and build only what closes them.

01
Observe independently

Every system tells you two stories — what it reports and what's actually happening. We build tools that listen to both.

02
Measure the gap

The distance between what you expect and what you see isn't error. It's information. Our products are built to surface that gap and make it actionable.

03
Ship what works

Offline-first. Self-hostable. Designed for the places where reliable infrastructure doesn't exist yet — because that's where the work matters most.

The research behind the product

Tarjumi's quality claims come from the same convergence method we publish on — independent measurement, stated honestly. Our first paper, Measured Forgetting, is out, with an open benchmark and statistically significant results.

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Measured Forgetting — published

The same convergence method that benchmarks Tarjumi, turned on context management for local LLMs. V2 beats V1 on all 7 models tested (sign test p = 0.008) — with an open-source benchmark and algorithm. Read the paper →