Introduction

In this FAQ we will answer the most common questions we get about payments and billing for Convert API organizations. Can’t find the answer to your question here? Email us anytime at support@mathpix.com and we would be happy to help you!

Accepted Payment Methods

Google Pay, Apple Pay, credit or debit card.

Pay As You Go plan requires a credit or debit card payment on file, which will be charged at the beginning of the month for the usage made in the previous month.

ACH and bank transfers, POs, and other Enterprise payment options available on request. Please contact Sales.

Convert API Plans

Monthly Pay As You Go

$19.99 one-time setup fee
$29 is applied to your account for testing any of our endpoints
Visualization Dashboard
Pay only for what you use
Billing on 1st of each month for the previous month’s API usage

We price differently based on which endpoints are used. Usage tiers serve as a volume discount.

Process image (v3/text)*
Process strokes (without live updates)(v3/strokes)
Process equation image (v3/latex)*
Process batch (v3/batch)*
Get results (v3/ocr-results)
- $0.002/request (0-1M images)
- $0.0015/request (1M+ images)

Note: each image with more than 12 rows of text shall count as one PDF page and will be priced at the PDF pricing rate.

Process PDF (v3/pdf)
- $0.005/page (0-1M pages)
- $0.0035/page (1M+ pages)
Digital ink with live updates included (v3/strokes using stroke session ID)
- $0/session (0-1K sessions)
- $0.01/session (1K-100K sessions)
- $0.008/session (100K-1M sessions)
- $0.005/session (1M+ sessions)

Pricing examples

Example of v3/text billing

Let’s say you have 1.5M requests of v3/text per month. The pricing for the first million requests is $0.002/request. The pricing for the next 500K requests is $0.0015/request. In total, you will have to pay:

1,000,000 * $0.002 = $2000
500,000 * $0.0015 = $750
$2000 + $750 = $2750

Example of v3/pdf billing

Let’s say you want to convert 2M pages of v3/pdf per month. The pricing for the first million pages is $0.005/page. When you reach a million pages, you pay $0.0035 for every next page. In total, you will have to pay:

1,000,000 * $0.005 = $5000
1,000,000 * $0.0035 = $3500
$5000 + $3500 = $8500

Example of v3/strokes billing

Let’s say you need 2,000,000 sessions of v3/strokes per month. The first thousand sessions is free. The pricing for the next 99K sessions is $0.01/session. The pricing for 100K-1M sessions is $0.008/session, and sessions after one million are $0.005. In total, you will have to pay:

1000 * $0 = $0
99,000 * $0.01 = $990
900,000 * $0.008 = $7200
1,000,000 * $0.005 = $5000
$0 + $990 + $7200 + $5000 = $13190

Example of mixed billing

Let’s say you have 3M requests of v3/text, 800K pages of v3/pdf, and 500K sessions of v3/strokes per month. In total, you will have to pay:

1,000,000 * $0.002 = $2000
2,000,000 * $0.0015 = $3000
$2000 + $3000 = $5000 for 3M requests of v3/text

800,000 * $0.005 = $4000 for 800K pages of v3/pdf

1000 * $0 = $0
99,000 * $0.01 = $990
400,000 * $0.008 = $3200
$0 + $990 + $3200 = $4190 for 500K sessions of v3/strokes.

Total amount: $5000 + $4000 + $4190 = $13190.

Enterprise

Best for large customers
Pay by invoice
24/7 support
Custom API features
Discounts for monthly subscriptions
Discounts for special use cases

Yearly License On-Prem

Fully contained AMI
Unlimited usage
No access to outside internet needed
Maintenance included
Software improvements included
GCP or Azure available upon request
Docker image available upon request

Updating billing information

You can update your billing information by going to console.mathpix.com > Your Convert Organization > Billing. Then find the Payment method section and click the Update button to enter your new credit card details.

Invoicing

You can find and download all of your invoices by going to console.mathpix.com > Your Convert Organization > Billing.

Usage monitoring and alerts

The Usage tab of your Convert organization on console.mathpix.com shows per-API-key traffic and estimated spend over time, and lets org admins configure automatic email alerts when a key spikes or exceeds a daily spend threshold.

Usage charts

Two stacked time-series charts sit at the top of the Usage tab:

Requests over time — one line per API key, one color per key.
Estimated Cost — the same time axis, with cost approximated from the same pricing tables shown above on this page. Volume discounts, credits, and rounding are applied at invoice time, so this value is close to — but not exactly — your final invoiced amount.

Each chart supports five time-range tabs: 24h, 7d, 30d, All time, and a Custom date-range picker. Click a legend dot to hide or show that key’s line. When you have a daily burn-rate alert configured on a key (see below), a red dashed line appears on the Estimated Cost chart at the configured threshold for that key.

Spike alerts

A spike alert fires when a key’s request count in the last completed hour exceeds N × the key's average for the same hour-of-day over the previous 4 weeks, where N is the multiplier you configure. A typical starting value is 2 — i.e. alert when this key gets twice its usual hourly traffic. You pick the multiplier per key.

To prevent repeated emails during a sustained spike, spike alerts are suppressed for approximately one hour after one fires for a given key.

Daily burn-rate alerts

A daily burn-rate alert fires when the rolling 24-hour estimated spend for a key exceeds the dollar threshold you configure (e.g. $500/day). The rolling spend is computed from your current month-to-date tier, so it reflects what that 24-hour window is actually costing you given your current volume — not a flat per-unit rate. If the 24-hour window crosses a calendar month boundary, each month’s portion is priced from its own month-to-date total, which means the rolling spend can read low in the first hours of a new month even after heavy prior-month usage. The red dashed line on the Estimated Cost chart shows where your threshold is set, as a visual reference.

Burn-rate alerts are suppressed for approximately 24 hours after one fires for a given key, to avoid a cascade of emails during a sustained overrun.

Configuring alerts

Click Set up alerts (or Add alert, if you already have one configured) on the Usage Alerts card to open the configuration modal:

In the modal:

Select an API key. Each key has its own thresholds and recipient list.
Enter a spike multiplier, a daily burn rate, or both. At least one threshold is required to save.
Pick recipients. The checkbox list is populated from your org members; admins are marked with a blue badge. Search filters the list. At least one recipient must be selected to save.
Click Save.

Configuring or changing alerts requires the admin role on the organization. Members can view the Usage Alerts card but cannot change settings.

Alert emails are sent from support@mathpix.com and link back to the Usage tab on Console.

FAQ

What is the OCR billing cycle for Pay as you Go users?

We charge on the 1st of the month for usage done in the previous month.

I would like to try Convert API before buying. Can I have a free trial?

We don’t give a free trial for Convert API. But you can create an account for a $19.99 one-time non-refundable setup fee and you’ll get $29 applied to your account for testing any of our endpoints.

I am worried that if I make a mistake and send off tons of requests, I could accidentally end up paying a lot of money. Is there a mechanism in place where the system would reject my requests instead of charging me?

Yes. The Usage tab on console.mathpix.com lets you configure two kinds of per-key email alerts as a proactive guardrail — see Usage monitoring and alerts for details:

A spike alert emails you when a key’s hourly request count jumps above its 4-week baseline by a multiplier you set.
A daily burn-rate alert emails you when a key’s rolling 24-hour estimated spend exceeds a dollar threshold you set.

If you’d also like a hard cap on request throughput, we can offer a lower per-minute rate limit, which would reject requests above that rate instead of processing them. Email support@mathpix.com to request a rate limit reduction.

I need to process a huge amount of images. How can I increase my monthly image limit?

There is no monthly limit if you are processing images. We have only limits for PDF processing (500 pages/month), which can be always topped up upon request. Learn more about our rate and page limits here.