Palm 1.0
Palm 1.0 reads whole signed sentences, not single words, and clears the 30% BLEU-4 mark generally treated as production-ready for machine translation.
Read the launch postTalksign Palm
Our sign-to-speech model. Palm reads continuous ASL signing and turns it into English text and speech.
Announcements
Palm 2.0
Faster, more accurate sign to speech, with specialist vocabulary.
Join the waitlistAvailability and pricing
Palm 1.0 has been available across the Talksign web app and mobile and desktop apps since August 20, 2026. Support for Meta Ray-Ban smart glasses is planned for early 2027.
A Deaf person signs to a camera, and Palm reads American Sign Language (ASL) and turns it into English, shown as text or spoken aloud. It reads signing in segments of up to about 20 seconds.
We’re recruiting pilot partners across healthcare, education, Deaf organisations, NGOs, enterprise and airports. To get early access for your organisation, sign our Letter of Intent.
In Talksign apps, Palm uses credits from your plan or top-ups: live translation is 10 credits per minute, charged per started minute with a 20-credit minimum per conversation.
Through the developer API, sign to speech is $0.75 per minute, or $22 per 30-minute session, paid from a prepaid wallet with a $50 minimum top-up and volume discounts. For API access, email dev@talksign.co.
Use cases
Palm lets Deaf people sign and be heard in everyday conversations where an interpreter isn’t there:
01
Healthcare
Patients sign symptoms and questions at reception, in appointments and at the pharmacy, and staff hear them in English.
02
Education
Deaf students sign questions and answers in class, and teachers and classmates hear them straight away.
03
Workplace
Deaf colleagues sign in meetings, interviews and one-to-ones, and everyone else hears them in real time.
04
Customer service
Customers sign at counters, help desks and kiosks, and staff understand without booking an interpreter.
05
Travel and airports
Travellers sign at check-in, security and gates, where an interpreter is rarely there in time.
06
Public services
People sign at council offices, job centres and service desks, and get answers in the same conversation.
Benchmarks
Palm 1.0 clears the target we set for every core translation measure, including the 30% BLEU-4 mark generally treated as production-ready.
Palm 1.0 against our targets Higher is better
TargetROUGEMeaning, in the right order
84.2%BLEU-1The right words
79.6%BLEU-4Four-word phrases, the strictest
36.6%What Palm sees
133Landmarks per frameAcross the hands, face and body
68On the faceFacial expression is part of the grammar
42On the hands21 on each hand
71K+Training samplesSingle signs and continuous sentences
Known limitations. Palm 1.0 reads ASL only, in segments of up to about 20 seconds. It works from landmarks in two dimensions, so signs that differ mainly in depth are harder to tell apart, and medical, legal and technical signing needs further training.
These are automatic translation measures. The real test is whether Deaf signers are understood by the people they’re talking to, which is why we test Palm with Deaf users and keep improving it with their feedback.
Trust and safety
Palm 1.0 was trained on the natural variation of real human signing from diverse signers, not a synthetic approximation, and we keep working with Deaf advocates, linguists and users so Palm improves in the ways that matter most to them. Palm is built for everyday conversations when an interpreter isn’t there; for legal, medical or emergency settings, a qualified interpreter should still be used.
Frequently asked questions
When should I use Palm?
Use Palm for everyday conversations where a Deaf person wants to sign and be heard: front desks, classrooms, meetings and counters. For legal, medical or emergency settings, use a qualified interpreter.
Which sign languages does Palm read?
American Sign Language (ASL), into English. British Sign Language (BSL) and German Sign Language (DGS) are on the roadmap.
How long can someone sign at once?
Palm reads signing in segments of up to about 20 seconds, so very long, uninterrupted passages are handled in parts.
Where can we use it?
In the Talksign web, mobile and desktop apps, with smart glasses planned for early 2027. Organisations can join as pilot partners through our Letter of Intent.
How much does it cost to use Palm?
In Talksign apps, 10 credits per minute of live translation. Through the API, $0.75 per minute.
