Meaning, in context.
We’re designing readings around the surrounding mathematics, with the source notation always in view.
A new voice for mathematics PRELAUNCH
Mathematics.
Beautifully spoken.
Ideas are made to be understood.
We’re building a voice that speaks the language
of mathematics—with clarity, care, and feeling.
For curious minds. For the people teaching them.
NOTATIONNARRATION
BUILT AROUND THE WAY YOU THINK
For learnersFor educatorsFor researchersFor builders
01 / HEAR THE BEGINNINGSame passage.
Same passage.
A different delivery.
Listen to our first experiment alongside the supplied stock voice. Same words. Original recordings.
An early look at the voice we’re developing.
THE LISTENING ROOMREAL EXPERIMENTAL AUDIO
“
The paper studies concentration inequalities for continuous-time and discrete-time additive functionals of multivariate diffusion processes. The functions may be unbounded, and the processes need not be reversible.
0:00 / 0:12
English · Mathematical research proseDownload clip ↗
About these recordings +
These are synthetic recordings of mathematical research prose, selected from a small development experiment after founder listening. They are not an equation demo or an independent performance benchmark. Evaria’s experimental candidate received two training updates from nine synthetic examples; the stock recording uses Qwen’s supplied Ryan voice. Ryan is a temporary, nonexclusive voice.
Text adapted from Concentration analysis of multivariate elliptic diffusions, Lukas Trottner, Cathrine Aeckerle-Willems, and Claudia Strauch (2023), JMLR, under CC BY 4.0. Wording adapted for spoken English. Full recording and model provenance ↗
02 / MEANING COMES FIRSTEvery symbol
Every symbol
has something to say.
A beautiful voice is only the beginning. Our focus is the relationship between what’s written, what’s meant, and what’s heard.
ON THE PAGE
∫₀¹ x² dx = ⅓
MATHEMATICAL NOTATIONIN YOUR EAR
“The integral from zero to one of x squared, with respect to x, equals one third.”
ILLUSTRATIVE READING · TEXT ONLY✳Bounds belong to the integral. The differential tells you the variable. Every part deserves to be heard.
Room to understand.
Pacing and pauses should support the idea. A proof needs a different rhythm from a paragraph.
Clarity you can check.
Visible speech plans, careful listening, and independent evaluation are central to the product we’re building.
03 / MADE FOR YOUR NEXT IDEAWhat could you
What could you
bring to life?
We’re starting with mathematics—and with the people who need a better way to hear it. Help us choose what comes next.
TEACH & CREATE
Let the lesson flow.
Imagine lessons and explainers where the equations feel as natural as the introduction.
LISTEN & LEARN
Another way into an idea.
For reading fatigue, revisiting a difficult concept, or making mathematical material more accessible.
04 / FOR THE BUILDERSYour ideas.
Your ideas.
Our voice.
A thoughtful API.
Prepare the reading. Inspect the script and credit quote. Generate when you’re ready. That’s the workflow we’re building.
Explore the API preview Private engineering preview · Access by invitationPOST /v1/plansJSON
// Start with the mathematics.
{
"domain": "mathematics",
"language": "en",
"segments": [
{
"kind": "latex",
"text": "\\int_0^1 x^2\\,dx"
}
]
}05 / ROOM TO EXPLORE. ROOM TO GROW.A plan for
A plan for
your kind of curious.
Join the early-access list today. Here’s how we’re thinking about paid plans for launch.
PROPOSED PRICING · NOT YET AVAILABLEBe part of the beginning.
Freeto join the list
For curious people with something to say.
- Share your use case
- Consideration for early trials
- Relevant product updates
- No payment details required
FOR EDUCATORS & CREATORS
CREATORGive your ideas a voice.
$19/ month, proposed
A proposed plan for lessons and explainers.
- 100,000 credits per month
- Planned narration workspace
- Reviewable speech scripts
- Proposed audio downloads
Build voice into your work.
$79/ month, proposed
A proposed plan for products and workflows.
- 500,000 credits per month
- Planned API access
- Script and credit preview
- Proposed async audio jobs
Clear words. Clear usage. Our proposed unit is one credit per character of prepared speech, including spaces and punctuation. Equations expand into words; you’ll see the quote before generation.
USD. Prices, allowances, and features are proposals, subject to measured costs and trial feedback. No purchases or billing are active. Final terms will be confirmed before any payment.
Can I use Evaria today?+
You can hear our first experimental recordings now and request early access. The editor and API are in development. Trial invitations will be phased; joining the list does not guarantee an invitation or a launch date.
What makes mathematical narration different?+
Mathematical notation is compact and context dependent. Bounds, subscripts, grouping, and pauses can change what a listener understands. We’re building a workflow that preserves the source, makes the intended reading visible, and lets people review the audio.
Is the preview a finished specialist model?+
No. It is a small engineering experiment based on Qwen3-TTS, using the supplied Ryan voice. The selected clips give an early impression of delivery. They do not establish mathematical accuracy, state-of-the-art performance, or an advantage over other TTS products.
Will you support LaTeX, PDFs, and other subjects?+
Our first focus is English mathematics with typed text and LaTeX segments. Whole-document PDF ingestion, chemistry, biology, and additional languages are future possibilities, not launch commitments. Tell us what you need in the early-access form.
How will credits work?+
Our proposed unit is one credit per Unicode character in the prepared spoken script, including spaces and punctuation. Expanded equations may use more characters than their source notation. The intended workflow shows the script and credit quote before generation. Prices and allowances are proposals and may change before launch.
Is early access free to join?+
Yes. Joining the list is free and requires no payment details. Any trial limits and any future paid terms will be explained before you choose to participate. There is no paid subscription or checkout on this site.
THE NEXT CHAPTER SOUNDS DIFFERENTFor the love
For the love
of understanding.
Help shape a new voice for mathematics.