GradeOrbit vs Top Marks AI
Two UK marking tools for schools, side by side.
Information about Top Marks AI checked 19 October 2026
In short
Top Marks covers a wide range of subjects and writes marks back into Bromcom, which GradeOrbit does not. GradeOrbit publishes its prices, and the method and limits behind its accuracy figures.
About Top Marks AI
Top Marks AI is a UK AI marking tool sold to schools. It says it batch-marks scanned handwritten scripts across KS3, GCSE, A-level and IB, and does not publish prices.
What one script costs
One student’s script at four lengths, from a short quiz to a long mock booklet.
Top Marks AI does not publish enough to work out a price per script.
GradeOrbit
Individual plans from £5 to £25 a month, for 30 to 180 credits. 1 credit marks one student’s script, whatever its length. Schools pay £10 per teacher a month, billed annually, with unlimited marking and AI detection on every seat.
1 credit per script costs 13.9p–16.7p on a monthly plan used in full, or 20p if you go over your allowance. School seats have no per-script charge.
Top Marks AI
Quote only. Top Marks asks schools to contact it or book a demo.
No price list is published, so a price per script cannot be worked out.
Published accuracy
Studies differ in subject, exam board, sample size and who ran them, so read the figures side by side rather than as a ranking.
GradeOrbit
- GCSE Maths (Pearson Edexcel): 96% of marks within 1 mark of the senior examiner, agreement score (QWK) 0.92, across 69 marks.
- GCSE English (Eduqas): 83% of marks within 1 mark of the senior examiner, agreement score (QWK) 0.96, across 98 marks.
Measured 18 October 2026 on exam board exemplar scripts. We ran the study ourselves; the method and limits are on our accuracy page.
Top Marks AI
Top Marks says its marking reaches 90%+ correlation with chief examiners in humanities, and that on a 30-mark GCSE English question its average error was 1.75 marks against 4.0 for experienced human markers. It describes its method only briefly.
Side by side
| GradeOrbit | Top Marks AI | |
|---|---|---|
| How you pay | Yes: Per script: 1 credit, any length | Not found: Quote only |
| Pages per script | Yes: Up to 50 on individual accounts; no limit for schools | Not found: Not mentioned on its homepage or pricing page |
| Subjects | Yes: Any subject, KS3 to A-level and BTEC | Yes: Says over 40 subjects, KS3 to A-level and IB |
| Handwritten scripts | Yes: Scanned or photographed whole scripts | Yes: Says it batch-marks scanned handwritten scripts |
| Mark schemes | Yes: Ready-made GCSE mark schemes, or your own criteria | Yes: Says it follows AQA, OCR, Edexcel, Eduqas, WJEC, CCEA and Cambridge schemes |
| Published accuracy figures | Yes: Against senior examiners, GCSE Maths and GCSE English | Yes: Its own figures, method briefly described |
| AI detection | Yes: 1 credit a check on individual plans; unlimited for schools | Yes: Says AI detectors are built in |
| MIS sync | Yes: Wonde, on school accounts | Yes: Wonde, with Bromcom write-back |
| Student data | Yes: Individual accounts: work not kept, names redacted in your browser. Schools: kept under a DPA | Not found: Not described on its homepage; links a privacy policy and sub-processor list |
| Free trial | Yes: 10 free credits for teachers; 30-day trial for schools | Not found: Not mentioned on its homepage or pricing page |
Where Top Marks AI is strong
- Says it covers over 40 subjects, including IB.
- Writes scores and feedback back into Bromcom, as well as syncing rosters through Wonde.
- Says AI detection is built in alongside marking.
Where GradeOrbit is different
- Top Marks’ comparison page, dated 12 September 2026, says GradeOrbit publishes no measured accuracy figures. Ours are now on our accuracy page, with the method and limits.
- GradeOrbit publishes its school price: one flat rate per teacher seat, with marking and AI detection included.
- GradeOrbit scores its accuracy against senior examiners’ marks on exam board exemplar scripts, and says who ran the study.
Which should you choose?
- Top Marks AI may suit you if
- You want marks written straight back into Bromcom, or IB coverage, and are happy to buy on a quote.
- GradeOrbit may suit you if
- You want a published per-teacher price and accuracy figures you can read the method for.
Sources
- Top Marks AI homepage (checked 19 October 2026)
- Top Marks AI, best AI marking software (checked 18 October 2026)
Everything about Top Marks AI on this page comes from its own public pages on the date shown, and may have changed since. We have not used Top Marks AI’s product. Top Marks AI is a trademark of its owner and is named here only to compare. Spotted something out of date? Tell us and we will correct it.
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