Free Alternatives to Spellbook for Contract Drafting and Review

Spellbook is a real product doing a real job: an AI add-in inside Microsoft Word that drafts and redlines clauses using GPT-4 class models and benchmarks your terms against a library of comparable agreements, without leaving the document. If you already pay for it and it saves you two hours a week, it is probably worth what it costs. This guide is for the larger group who do not want a seat licence for occasional drafting help, and who want to know what a free setup gets them against it. (Adira, which publishes this guide, sells contract review and CLM software, so we have a commercial reason to want you comfortable with AI-assisted drafting generally. The comparison below is written to hold up regardless of which tool you end up using.) The honest answer, tested rather than assumed: no free tool matches Spellbook's in-Word polish and clause memory, but a general AI model with a disciplined prompt covers most of the actual drafting and review work, provided you do the verification step Spellbook's own marketing does not emphasise either.

The comparison, tested

Spellbook does not publish pricing, so treat the "free limit" and feature columns below as a snapshot checked in September 2026, and re-verify on the vendor's own site before you decide.

Tool	Draft clauses?	Review/redline?	In-Word?	Free limit	India-law aware?	Data handling
Spellbook	Yes, from a prompt or a clause library, benchmarked against 2,300+ comparable contract types	Yes, flags missing or non-market terms and suggests redlines	Yes, native Word add-in	7-day free trial, then custom-quoted per seat, no published price	Not by default; built and trained primarily for US, UK, and Canadian practice	States customer content is not used to train its or its subprocessors' models; runs on an enterprise OpenAI arrangement that does not retain content for training
ChatGPT (free tier)	Yes, if you write the prompt yourself	Yes, same way	No, copy-paste in and out of Word	Free tier available, message caps that vary by demand, older/lighter model routed at peak	Not by default; needs to be told Indian statute applies	Free-tier inputs can be used to improve the model unless you turn this off in Settings, Data Controls
Claude (free tier)	Yes, same way	Yes, same way	No, copy-paste	Free tier available with a daily/session usage cap	Not by default; same gap	Consumer free-tier conversations may be used to improve models unless you opt out in Privacy settings
Gemini (free tier)	Yes, same way	Yes, same way	No, copy-paste, though Gemini in Google Docs is closer to in-document	Free tier available, usage caps apply	Not by default; same gap	Activity may be used to improve Google's services unless Gemini Apps Activity is turned off
Weave (read and mark up)	No, it is a review tool, not a drafting tool	Yes, for reading and marking up a clause someone else drafted	Browser, not Word	Free	Built for reading; India-law flags depend on what you ask it to check, same as any AI tool	Browser-based

What Spellbook actually is, described fairly

Spellbook launched as a Word add-in built by the company formerly known as Rally, running on GPT-4 class models (the vendor's own pages describe GPT-4o inside Word specifically) with its own fine-tuning and prompt layer for contract work. Inside a document, it can draft a clause from a plain-language instruction, suggest redlines against a stated party position, and benchmark a term like a liability cap against its library of comparable agreements, something a general chatbot cannot replicate since it has no equivalent proprietary dataset.

Two things are worth stating plainly. The in-Word integration is a genuine convenience: drafting and redlining inside the actual document, with tracked changes, saves the copy-paste round-trip every general-AI workflow below requires. And Spellbook does not publish pricing. Every "per-seat" figure on comparison sites is a third-party estimate, not a number from Spellbook's own site, which offers only a 7-day free trial and a custom quote by team size. If price matters, get it from Spellbook directly rather than trusting a comparison article, this one included.

Free route: a general AI model with a disciplined drafting prompt

The free version of what Spellbook does is not "open ChatGPT and ask for a contract." It is a structured prompt you reuse every time, because the model has no memory of your playbook or your last ten drafts the way Spellbook's clause library and stored positions do. A workable version looks like this:

"Draft a [clause type, e.g. limitation of liability] clause for a [contract type, e.g. SaaS subscription agreement] governed by Indian law, where our client is the [vendor/customer]. Our position: [state the actual commercial terms, e.g. total liability capped at 12 months' fees paid, carve-outs only for breach of confidentiality and IP infringement]. Flag, separately, anything in this clause that Indian statute treats differently from a US or UK default, including any point where the clause would be void or where an Indian court reads a gap differently from a silent US contract. Output the clause, then a one-paragraph note on what I should have a lawyer check."

This gets you most of Spellbook's drafting value for free: a first-pass clause in your stated commercial terms, with an explicit ask for the India-specific flag Spellbook itself does not reliably surface. What it does not get you is the library benchmark ("is a 12-month cap market for this contract type"), a dataset neither ChatGPT, Claude, nor Gemini has been built against, and the in-Word workflow, since you are pasting the result in and formatting it yourself.

What a free AI drafting pass misses about Indian contracts, and Spellbook is not immune either

General-purpose models, and tools built on top of them for a US, UK, or Canadian market, share the same blind spot: Indian statute overrides a lot of what looks like a reasonable default elsewhere, and nothing prompts the model to check unless you ask.

Non-compete clauses. A drafting prompt that says "add a two-year post-employment non-compete, pan-India, standard terms" will get drafted, by a free chatbot or a paid Word add-in alike, without a warning that it is very likely unenforceable. Section 27 of the Indian Contract Act, 1872 is direct:

"Every agreement by which any one is restrained from exercising a lawful profession, trade or business of any kind, is to that extent void." Source: Section 27, Indian Contract Act, 1872, Indian Kanoon

The narrow exception is someone selling the goodwill of a business agreeing not to compete with the buyer, within reasonable limits. Everything else drafted as a standard employment non-compete is void to that extent, and neither a free model nor a paid one will tell you unless the prompt asks it to check.

IP assignment silent on period or territory. Ask any AI to "draft a clause assigning all IP in the deliverables to the Client," and it will produce language that reads like a permanent, worldwide assignment, because that is the US and UK default it was trained on. Sections 19(5) and 19(6) of the Copyright Act, 1957 set a different Indian default:

"If the period of assignment is not stated, it shall be deemed to be five years from the date of assignment." "If the territorial extent of assignment of the rights is not specified, it shall be presumed to extend within India." Source: Section 19, Copyright Act, 1957, Indian Kanoon

A drafted assignment clause with no stated period or territory reverts, by law, to five years and India-only, not "forever, everywhere," a gap a US-built benchmark would not flag either, since the US default it compares against is different.

Stamping. No AI tool will tell you a clause it just drafted needs to sit inside a document that is duly stamped before an Indian court admits it as evidence, since stamping has no real equivalent in US or UK practice. Section 35 of the Indian Stamp Act, 1899 states:

"No instrument chargeable with duty shall be admitted in evidence for any purpose by any person having by law or consent of parties authority to receive evidence... unless such instrument is duly stamped." Source: Section 35, Indian Stamp Act, 1899, Indian Kanoon

This is a document-level requirement, not a clause-level one, so it survives however well an individual clause is drafted. You have to raise it yourself with any drafting tool, Spellbook included, unless you have specifically told it the contract is for use in India.

Review and redlining, the other half of what Spellbook does

Spellbook's second function, flagging non-market terms and suggesting redlines on a document someone else sent you, has a free equivalent too: paste the clause into ChatGPT or Claude with your stated position (as in how to review a contract with AI), and demand an exact-sentence citation for every flag so you can Ctrl+F and check it. Where you do not want to upload anything at all, even to a free AI account, you can read and mark up the clause directly in the browser using Weave, Adira's free contract review tool, before deciding whether it needs an AI pass or a lawyer's eyes. For the fuller comparison of free AI review options, including which free tiers actually cite the source sentence, see the best free AI contract review tools in 2026; before uploading anything genuinely confidential to any AI tool, free or paid, read is it safe to upload a contract to AI.

The data question: does the free tier train on what you paste in

This is the part most "free Spellbook alternative" comparisons skip, and it matters most for a real contract. Spellbook's own privacy and security pages state that customer content is not used to train its or its subprocessors' models, running on an enterprise OpenAI arrangement that does not retain content for training, the kind of commitment a Data Fiduciary is expected to secure. Under the Digital Personal Data Protection Act, 2023, a business deciding why and how personal data is processed is a "Data Fiduciary," and Section 8(2) requires exactly this before handing data to a processor:

"A Data Fiduciary may engage, appoint, use or otherwise involve a Data Processor to process personal data on its behalf for any activity related to offering of goods or services to Data Principals only under a valid contract." Source: Section 8, Digital Personal Data Protection Act, 2023, MeitY

A free consumer AI account is a different arrangement. ChatGPT's and Claude's free tiers can, by default, use what you paste in to improve their models, unless you turn that off in each product's own data controls, and neither carries a signed processing contract the way a paid plan does. Most contracts carry personal data (signatory names, emails, sometimes salary or pricing terms), so the free-tier default is a real question, not a technicality.

A test you can run before you paste anything real in: open the free tool's own settings, not a summary article, and search for the words "train," "retain," and "delete." If you cannot find a clear answer to all three inside two minutes on the vendor's own page, treat that tool as unsuitable for a confidential draft and use a dummy clause with fake names and numbers to test the workflow instead.

Red flags

Normal	Red flag	Why it matters
A drafted clause comes with a note on what a lawyer should check	The clause is presented as ready to send, no caveat	Both free and paid AI tools draft fluent, confident language regardless of enforceability
The prompt or tool is told explicitly the contract is for use in India	Indian law never mentioned; the tool defaults to US or UK assumptions	Non-compete, IP assignment period/territory, and stamping are the three common silent misses
Free-tier data controls (training opt-out, retention) checked before pasting a real contract	A named-party contract pasted into a free account with default settings	You may hand a confidential draft, and any personal data in it, to a tool with no processing contract
A benchmark claim is checked against what jurisdiction it was built for	A US benchmark ("this cap is below market") applied unquestioned to an India-governed contract	"Market" in a US dataset is not "market" for an Indian court
Spellbook's price confirmed on its own pricing page or a sales call	A per-seat figure from a comparison site treated as Spellbook's real price	Spellbook does not publish pricing; third-party numbers are estimates
Every AI-suggested redline checked against the source clause before it goes out	A redline sent out because the tool "looked thorough"	Neither a free model nor a paid add-in reliably knows Indian statutory overrides unless told

Fixing an AI-drafted clause that skipped the Indian default

Bad (a common first-pass output from any general AI prompt, and from a tool with no India context): "The Contractor hereby assigns to the Client all right, title, and interest in and to the Work, including all intellectual property rights therein, effective upon creation."

What is wrong: no stated period, no stated territory. Read against a US default, this looks like a permanent, worldwide assignment. Under Indian law, silence on both points means the assignment reverts to five years and India-only under Sections 19(5) and 19(6) of the Copyright Act, 1957, almost certainly not what the Client's commercial team intended when they asked for "all rights, forever."

Better: "The Contractor hereby assigns to the Client all right, title, and interest in and to the Work, including all intellectual property rights therein, for the full term of copyright protection available under applicable law and for the entire world, effective upon creation. For the avoidance of doubt and without limiting the foregoing, this assignment is intended to exclude the operation of the default period and territory under Sections 19(5) and 19(6) of the Copyright Act, 1957."

What changed: it states a period and a territory explicitly instead of leaving Indian law to fill the gap with a five-year, India-only default, and it names the specific sections being displaced, so the intent is unambiguous if the clause is ever disputed.

Which option actually fits your situation

If you draft contracts often enough that the in-Word workflow and clause-library benchmark save real time weekly, Spellbook's trial is worth running before you dismiss the seat cost; the two-hours-a-week saving the vendor claims is plausible at typical reviewer rates. If you draft or review occasionally, a disciplined prompt in ChatGPT or Claude's free tier, with the India-specific checks above added explicitly, covers most of the same ground for zero cost, minus the copy-paste and the benchmark. If the task is reading and marking up something someone else sent, not drafting, start with a free browser markup tool instead of either.

US and global contrast

Spellbook, and most of the free chatbots it is compared against, were built and trained primarily on US, UK, and Canadian contract practice. A non-compete gets assessed on reasonableness rather than flagged as presumptively void, an IP assignment with no stated period or territory reads as permanent and worldwide, and stamping never comes up at all, because none of those defaults exist the same way outside India. A US-trained tool, paid or free, still drafts fluent, usable contract language. It just does not know, unprompted, where Indian statute has changed what "standard" actually means, which is why this guide checks every clause against the specific section, not against how it reads.

FAQ

Is there a genuinely free tool that does what Spellbook does? Not with the same in-Word integration or clause-library benchmark. A free ChatGPT or Claude account with a disciplined, reused drafting prompt covers most of the drafting and review work, but you lose the native Word workflow and the market benchmark, and you do your own verification.

Does Spellbook know Indian law? Not by default. Its benchmark library was assembled primarily around US, UK, and Canadian practice. If you use it for an India-governed contract, tell it explicitly and still check three common gaps: non-compete enforceability, IP assignment period and territory, and stamping.

How much does Spellbook actually cost? Spellbook does not publish pricing. It offers a 7-day free trial and a custom quote by team size; any per-seat number on a third-party comparison site is an estimate, not a confirmed price, so check the vendor's own site or a sales call before budgeting against it.

Is it safe to paste a real contract into ChatGPT or Claude's free tier instead of Spellbook? Only after checking that tool's own data controls. Free consumer tiers can, by default, use pasted content to improve their models, and carry no signed processing contract the way a paid plan does. Turn off training in settings, or use a dummy clause, before pasting anything with real names or confidential terms.

Can a free AI tool draft a contract clause well enough to send to the other side? It can draft fluent, plausible-sounding language, paid or free. Whether it is right for your situation, especially anything touching liability, IP, non-compete, or Indian statutory defaults, needs a human check every time, a limit of the technology, not of any one tool.

Should I use Spellbook, a free AI tool, or a browser markup tool? Spellbook for frequent in-Word drafting where the seat cost pays for itself; a free AI tool with a disciplined prompt for occasional drafting or review; a free browser tool for reading and marking up a document someone sent you, without uploading it anywhere.

This guide gets you an honest, checkable comparison of what each option does and does not do. It does not tell you whether a clause it helps you draft is enforceable in your situation, or whether a tool's data handling is adequate for your contract's confidentiality obligations, both of which depend on facts a lawyer needs to see. None of this is legal advice. Talk to a lawyer before relying on an AI-drafted clause, from any tool, for an agreement with real money or real risk attached.