Best AI Contract Review Software in 2026
Updated
In short: Definely is ranked #1 of 20 as of 8 October 2026, ahead of Genie AI and Legartis. The best-ranked option with a free plan is Genie AI. The lowest first paid tier on this page is Genie AI at $4.92/mo.
AI contract review software can help with the work of assessing agreement language and proposed changes. Compared on clause comparison, playbook support and redline suggestions, the entries also specify API access, supported file formats and supported languages. Those details help you consider whether the listed capabilities fit your documents and review process. Check free-plan availability and the paid-from price when weighing costs. Genie AI, Legartis and LeCHECK are among the products to compare. Look at format and language support alongside review features, and consider API access if it is relevant to how your team works.
20 AI contract review software ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
20ranked
3free plans on this page
$4.92/molowest paid tier
8 Oct 2026last checked
Input list AI Contract Review Software 20 channels on this page · 62 of 160 spec lines stated by the makers
Ch Tool Free planPaid fromClause comparisonRedline suggestionsPlaybook supportSupported file formatsSupported languagesAPI access Spec sheet Score
01 Definely Free plannot statedPaid fromnot statedClause comparisonYesRedline suggestionsYesPlaybook supportnot statedSupported file formatsMicrosoft Word, PDFSupported languages2 languagesAPI accessnot stated 4/8spec lines stated 7.4
02 Genie AI Free planYesPaid fromnot statedClause comparisonYesRedline suggestionsYesPlaybook supportYesSupported file formatsDOCX, PDF, images, spreadsheetsSupported languages10 languagesAPI accessYes 7/8spec lines stated 7.3
03 Legartis Free planYesPaid fromnot statedClause comparisonYesRedline suggestionsYesPlaybook supportYesSupported file formats.pdf, .docx; .xlsx for playbook creationSupported languages3 languagesAPI accessYes 7/8spec lines stated 7.3
04 Zuva Free planYesPaid fromnot statedClause comparisonnot statedRedline suggestionsnot statedPlaybook supportnot statedSupported file formatsnot statedSupported languagesnot statedAPI accessnot stated 1/8spec lines stated 7.3
05 LeCHECK Free planNoPaid fromnot statedClause comparisonYesRedline suggestionsYesPlaybook supportYesSupported file formatspdf, WordSupported languages2 languagesAPI accessnot stated 6/8spec lines stated 7.2
06 ThoughtRiver Free planNoPaid fromnot statedClause comparisonYesRedline suggestionsYesPlaybook supportYesSupported file formatsnot statedSupported languagesnot statedAPI accessYes 5/8spec lines stated 7.0
07 Robin AI Free plannot statedPaid fromnot statedClause comparisonnot statedRedline suggestionsnot statedPlaybook supportnot statedSupported file formatsnot statedSupported languagesnot statedAPI accessnot stated 0/8spec lines stated 6.9
08 Spellbook Free planNoPaid fromnot statedClause comparisonYesRedline suggestionsYesPlaybook supportYesSupported file formatsDOCX, PDF, DOC, TXT, XLSX, GDOCSupported languagesnot statedAPI accessYes 6/8spec lines stated 6.9
09 LegalSifter Free plannot statedPaid fromnot statedClause comparisonnot statedRedline suggestionsnot statedPlaybook supportnot statedSupported file formatsnot statedSupported languagesnot statedAPI accessnot stated 0/8spec lines stated 6.8
10 GC AI Free planNoPaid from500/user/moClause comparisonNoRedline suggestionsYesPlaybook supportYesSupported file formatsPDF, DOCX, Google DocsSupported languagesnot statedAPI accessYes 7/8spec lines stated 6.7
11 BlackBoiler Free planNoPaid fromnot statedClause comparisonnot statedRedline suggestionsnot statedPlaybook supportnot statedSupported file formatsnot statedSupported languagesnot statedAPI accessnot stated 1/8spec lines stated 6.6
12 LegalOn Free planNoPaid fromnot statedClause comparisonnot statedRedline suggestionsnot statedPlaybook supportnot statedSupported file formatsnot statedSupported languagesnot statedAPI accessnot stated 1/8spec lines stated 6.6
13 Maigon Free plannot statedPaid fromnot statedClause comparisonnot statedRedline suggestionsYesPlaybook supportYesSupported file formatsDOCX, PDFSupported languagesnot statedAPI accessnot stated 3/8spec lines stated 6.6
14 eBrevia Free plannot statedPaid fromnot statedClause comparisonYesRedline suggestionsYesPlaybook supportYesSupported file formatsPDF, WordSupported languages37 languagesAPI accessYes 6/8spec lines stated 6.5
15 Luminance Free planNoPaid fromnot statedClause comparisonnot statedRedline suggestionsnot statedPlaybook supportnot statedSupported file formatsnot statedSupported languagesnot statedAPI accessnot stated 1/8spec lines stated 6.5
16 Superlegal Free plannot statedPaid fromnot statedClause comparisonnot statedRedline suggestionsYesPlaybook supportYesSupported file formatsPDF, WordSupported languagesnot statedAPI accessYes 4/8spec lines stated 6.5
17 DocJuris Free planNoPaid fromnot statedClause comparisonnot statedRedline suggestionsnot statedPlaybook supportnot statedSupported file formatsnot statedSupported languagesnot statedAPI accessnot stated 1/8spec lines stated 6.4
18 TermScout Certify Free planNoPaid from450/user/moClause comparisonnot statedRedline suggestionsnot statedPlaybook supportnot statedSupported file formatsnot statedSupported languagesnot statedAPI accessnot stated 2/8spec lines stated 6.3
19 Kira Free plannot statedPaid fromnot statedClause comparisonnot statedRedline suggestionsnot statedPlaybook supportnot statedSupported file formatsnot statedSupported languagesnot statedAPI accessnot stated 0/8spec lines stated 5.4
20 LawGeex Free plannot statedPaid fromnot statedClause comparisonnot statedRedline suggestionsnot statedPlaybook supportnot statedSupported file formatsnot statedSupported languagesnot statedAPI accessnot stated 0/8spec lines stated 5.2
Compare all 20 in a table
| # | Tool | Score | Free plan | From | Free plan | Paid from | Clause comparison | Redline suggestions |
|---|---|---|---|---|---|---|---|---|
| 1 | Definely | 7.4 | No | — | — | — | Yes | Yes |
| 2 | Genie AI | 7.3 | Free plan | $4.92/mo | Yes | — | Yes | Yes |
| 3 | Legartis | 7.3 | Free plan | Free | Yes | — | Yes | Yes |
| 4 | Zuva | 7.3 | Free plan | Free | Yes | — | — | — |
| 5 | LeCHECK | 7.2 | No | — | No | — | Yes | Yes |
| 6 | ThoughtRiver | 7.0 | No | $6/mo | No | — | Yes | Yes |
| 7 | Robin AI | 6.9 | No | — | — | — | — | — |
| 8 | Spellbook | 6.9 | No | — | No | — | Yes | Yes |
| 9 | LegalSifter | 6.8 | No | $229.17/mo | — | — | — | — |
| 10 | GC AI | 6.7 | No | $500/mo | No | 500 /user/mo | No | Yes |
| 11 | BlackBoiler | 6.6 | No | $104.17/mo | No | — | — | — |
| 12 | LegalOn | 6.6 | No | — | No | — | — | — |
| 13 | Maigon | 6.6 | No | — | — | — | — | Yes |
| 14 | eBrevia | 6.5 | No | — | — | — | Yes | Yes |
| 15 | Luminance | 6.5 | No | — | No | — | — | — |
| 16 | Superlegal | 6.5 | No | $999/mo | — | — | — | Yes |
| 17 | DocJuris | 6.4 | No | — | No | — | — | — |
| 18 | TermScout Certify | 6.3 | No | $37.50/mo | No | 450 /user/mo | — | — |
| 19 | Kira | 5.4 | No | — | — | — | — | — |
| 20 | LawGeex | 5.2 | No | — | — | — | — | — |
Is your tool on this list?
Numbered spots on this list can be sponsored, and a sponsored row is labelled as paid.
Questions about this list
Which AI contract review software is ranked first on Specifiction?
Definely is ranked #1 of 20 with a score of 7.4. Genie AI is second and Legartis third.
How many of these have a free plan?
3 of the 20 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, Genie AI has the lowest first paid tier we found: $4.92/mo.
How is this list ranked?
Ranked on what each maker publishes, the fullest spec sheet first: how deeply the product is documented, the platforms it runs on, a free tier or trial to test it, and its standing.
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