Convilyn User Manual

Pricing

Two things cost money here, and one of them is nothing.

File conversion is free — on every plan, including Free, with no per-file charge and no monthly cap on how many you run. AI workflows cost credits — quoted before the run starts, then settled against what the run actually used. That is the whole model.

What each workflow costs

There are 16 AI workflows you can start today. They are priced from 15.1 credits ($0.15) to 318.85 credits ($3.19), and most commonly 150.025 credits.

WorkflowCreditsApprox.
Multi-Post Generator
content_to_multipost
15.1$0.15
Files to Markdown
to_markdown
15.25$0.15
Structured Extraction
understand_document
24.1$0.24
Household Paperwork Sorter
personal_document_actions
37.6$0.38
Recording Enunciation Cleanup
audio_recording_optimization
90.1$0.90
Bank Statement-to-Ledger
bank_statement_to_ledger
90.1$0.90
Grade Sheet Auto-Compute
grade_sheet_compute
105.1$1.05
Differentiated Quiz Generator
differentiated_quiz_generator
112.6$1.13
IEP Full Draft
iep_full_draft
112.6$1.13
Expense Batch Summary
expense_batch_summary
120.1$1.20
Product Image Traditional-Chinese Localizer + 4-Platform Copy
product_image_tw_launch_pack
120.1$1.20
Classical Chinese Worksheet
classical_chinese_worksheet
150.025$1.50
Crowdfunding Pre-launch Survey
crowdfunding_survey_generator
150.025$1.50
Multi-Platform E-commerce Listing Excel
product_page_to_ecommerce_excel
150.025$1.50
Subtitle Studio
video_subtitle
187.6$1.88
Job Application Assistant
resume_to_job_ready
318.85$3.19

Every price above is what one run is quoted at, and what you are charged when you confirm it. There is no per-page, per-minute or per-step surcharge on top of it. What can still change is the final total — see How a charge is worked out below.

Subscription plans

PlanPriceCredits includedMax uploadConcurrent jobsIncluded storage
FreeFreeNo credit allowance100 MB2500 MB
Pro · Monthly$4.99499 per month500 MB105 GB
Pro · Yearly$48
$4.00/month equivalent
4800 per year, granted upfront500 MB105 GB
Business · Monthly$353500 per month1 GB2020 GB
Business · Yearly$360
$30.00/month equivalent
36000 per year, granted upfront1 GB2020 GB

Features are the same on every plan. What changes is how many credits arrive each period, and the anti-abuse limits — upload size, concurrent jobs, storage. There is no capability locked behind a higher tier.

Yearly plans grant the whole year's credits upfront rather than metering them monthly. They are a lighter commitment, not a discount: a credit costs the same whichever plan bought it.

Free on every plan: file conversion

Converting between formats runs on our own machines. It costs us processing time and nothing per file, so we do not meter it — no credits, no monthly quota, on every plan including Free.

What does apply is your plan's upload size and concurrent job limits, in the table above. Those exist to stop one account saturating the queue, not to meter conversion.

See Turbo Lane for the formats, and On your own machine for converting without an account at all.

SDK and API usage

There is no separate developer fee. The SDK and the REST API run the same workflows at the same credit prices as the web app, drawing on the same balance. API access is available on every plan, including Free.

Two per-period allowances in the plan table are worth calling out, because they are the only developer-facing limits:

  • AI workflow runs — the same allowance whether a run starts from the web app, the SDK, or the API.
  • Builder sessions and custom workflow runs — for building and running your own workflows rather than the ready-made ones.

Start at API keys for credentials, or the developer documentation for the SDKs.

How a charge is worked out

  1. Each run adds up what it actually used — pages, images, minutes of audio or video, and the reasoning steps in between.
  2. That total is converted into whole credits, rounded up — and one credit is always $0.01.
  3. You see the credit price before the run starts. When the run finishes, that amount is settled against what the run actually used.

Credits add up across runs. Three runs in one month:

2 × Multi-Post Generator30.2
1 × Job Application Assistant318.85
Total349.05 ($3.49)

The quote is what you are charged when you confirm. After the run it is settled against what the run actually used: a run that used more is topped up to its real cost, and a run that failed is refunded in full. A run that used less than its quote is not refunded the difference.

Buying more credits

Credits included with a subscription cover that billing period and do not carry over. If you need more, you can top up at any time, and top-up credits never expire — they sit in a separate balance that period renewals do not touch.

Paid plans earn a bonus on top-ups; the bonus rate is in the plan table above. The minimum purchase and the exact credits you will receive are both shown at checkout, which is the only place they are authoritative.

Questions

Is file conversion really free?

Yes, on every plan including Free. Conversion runs on our own machines with no per-file cost to us, so we do not meter it. Your plan's upload size and concurrency limits still apply.

What is a credit worth?

One credit is always $0.01. That rate is the same on every plan and for every top-up — there is no cheaper or more expensive credit.

Do unused credits disappear?

Credits included with a subscription are for that billing period and do not roll over. Credits you buy as a top-up never expire.

What does the Free plan include?

A small number of AI workflow runs each month under a monthly processing limit, plus unlimited file conversion. Free does not include a credit allowance.

Does using the SDK or API cost extra?

No. The SDK and the API run the same workflows at the same credit prices, and API access is available on every plan. There is no separate developer fee.

Can the final charge differ from the quote?

Yes. The quote is charged when you confirm, and after the run it is settled against what the run actually used. A run that uses more than its quote is topped up to its real cost. A run that fails is refunded in full and costs you nothing. A run that uses less than its quote is not refunded the difference.

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