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Chandra OCR 2

by Datalab · open weights

Turns scanned pages, PDFs and photos into clean Markdown, HTML or JSON. It keeps tables, forms, handwriting and reading order, which makes it a good fit for invoices, KYC files and handwritten records.

OCR · document layout Images and PDF pages in Hosted in India Separate instance No training on your data

Size4B parameters

RuntimevLLM, OpenAI-compatible

LicenceModified OpenRAIL-M ↗

BillingFixed monthly plan

Accuracy on olmOCR-Bench ↗Ranked #1 of open OCR models

Chandra OCR 285.9%

dots.ocr 1.583.9%

olmOCR 282.4%

PaddleOCR-VL80.0%

DeepSeek-OCR75.4%

1. How many pages a month?

Pages per month

A page is one image or one PDF page. Rough guide: 1 invoice is 1–2 pages, 1 KYC file is 4–8 pages.

2. How fast do you need results?

Instant
Results in seconds, any time during your hours. For apps where people wait on the answer.Most teams Scale to zero
The server winds down after 15 minutes with no requests. A cold start takes about 3 minutes, then responses come in seconds while it stays warm. Warm hours are capped by your plan; requests after the cap go to the overnight queue. Overnight batch
Submit jobs any time. They run overnight on your own instance and results are ready by 9 am IST.Lowest price

3. When do you need it?

Office hours
Mon–Fri, 9 am to 7 pm IST. Around the clock
24 hours, every day.

4. Extra usage

₹100 per 1,000 pages above your plan

Allow extra usage
Extra pages run in the overnight batch. Billed at ₹100 per 1,000 pages, up to your monthly limit. No extra usage
Requests above your plan are refused (HTTP 429) until next month. You pay the plan price only.

Monthly limit for extra usage (₹)

5. Start your plan

Key terms

Your data: Processed in India on infrastructure dedicated to your plan. Documents and outputs are not stored after processing and are never used to train models.
Billing: A fixed monthly price plus 18% GST. Extra pages are billed only if you allow them, and never above your monthly limit.
Over your plan: With extra usage off, requests return HTTP 429 until the next month.
Price changes: We tell you about any new price before the month it applies to.
Cancellation: Pause or cancel at any time. Cancellation takes effect at the end of the current month.
Model licence: Your organisation is the licensee of the model. aram keeps a record of your confirmation.