Grok vs AIWriteBook
Plans, free access, limits and intended use side by side, taken from each vendor’s own pages. No score and no winner: the facts show where the two differ.
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Pick the tier by video and search needs, not the model
Plan, write, edit, format and publish a book with AI, with a cover and audiobook on higher plans
- Free access
- Grok: Free access
- AIWriteBook: Free access
- Paid from
- Grok: USD 10 per month
- AIWriteBook: USD 20 per month
- Plans listed
- Grok: 6
- AIWriteBook: 5
- Public API
- Grok: Yes
- AIWriteBook: Not confirmed
Where Grok and AIWriteBook differ
- PlansGrok lists 6 plans and AIWriteBook lists 5.
Head to head
Each value from the tool’s profile and the vendor’s own pages
| Grok | Fact | AIWriteBook |
|---|---|---|
| Access and price | ||
| Free access availableFree · USD 0 | Free accessSame | Free access availableFree · USD 0 |
| USD 10 per monthSuperGrok Lite · shown on the grok.com plans page | Lowest listed paid plan | USD 20 per monthPlus · or $12 per month billed yearly · $144 a year |
| Free plan; SuperGrok from $30/month | Pricing model | Free plan (100 credits); paid from $12 a month billed yearly |
| 6 | Plans listedDiffers | 5 |
| Yes | Public API | Not confirmed |
| Not confirmed | Card to start | Not confirmed |
| No | Open source | Not confirmed |
| What it is for | ||
| Chat and research that needs live X and web context | Built for | Self-publishing authors, ghostwriters and non-fiction writers who want one place to outline, draft in their own style, edit and prepare a book for Amazon KDP |
| Writing & content | CategorySame | Writing & content |
| Platforms |
|
| Works with |
|
| How current | ||
| Profile sources checked | ||
| Prices confirmed · Sep 29, 2026 | Pricing checkSame | Prices confirmed · Oct 17, 2026 |
Official source check for both tools. No hands-on testing and no score: “Differs” marks a documented difference, not a better tool.
Plans and prices
Grok
Prices confirmed · Sep 29, 2026- FreeUSD 0
- SuperGrok LiteUSD 10 per monthshown on the grok.com plans page
- SuperGrokUSD 30 per month
- SuperGrok PlusUSD 100 per month
- SuperGrok HeavyUSD 300 per monthshown on the grok.com plans page
Show 1 more plan
- BusinessUSD 30 per month as listedseat basis not stated
AIWriteBook
Prices confirmed · Oct 17, 2026- FreeUSD 0
- PlusUSD 20 per monthor $12 per month billed yearly · $144 a year
- ProUSD 50 per monthor $30 per month billed yearly · $360 a year
- UltraUSD 200 per monthor $120 per month billed yearly
- One-time creditsUSD 20 for 250 creditsor $50 for 2,000 credits
Strengths and limits
Grok
Strengths
- Capable free tier: Free includes Grok 4.6, image generation, voice mode, Grok Build and connectors without a subscription.
- Live X context: Real-time X search surfaces current public posts that general chat assistants may not reach.
- Same core model on every tier: All consumer tiers list Grok 4.6, so upgrades buy limits and features rather than a different core model.
Limits to plan around
- Tier prices split across two pages: x.ai/pricing omits Lite and Heavy, which appear only on the grok.com plans page.
- Broad license over inputs: The terms grant SpaceXAI a perpetual, sublicensable license to inputs, including any image, likeness or voice they contain.
- No-training promise only for business: The comparison table reserves its no-training commitment for Business and Enterprise; consumers rely on a settings opt-out.
AIWriteBook
Strengths
- Free plan with no card: The pricing FAQ says you can plan a full book and get a first chapter free, with no credit card required.
- Content stays yours: The terms say you keep ownership and commercial rights to what you create, and the privacy policy says your content is not used to train its models or by its AI providers.
- Credit costs are published: The terms list per-action credit costs, so you can estimate a book before paying.
Limits to plan around
- Pages disagree on credit expiry: The pricing FAQ says unused subscription credits expire after a month, while the terms say Pro credits roll over for up to 3 months.
- Audiobooks are credit-heavy: At the terms' rate a 2,000-word chapter costs about 880 credits, so a full audiobook can outrun a plan's monthly allowance.
- Refunds are narrow: The terms allow a refund only within 7 days of the first subscription purchase and with under 50% of credits used; renewals and one-time credit packs are non-refundable.
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Comparing tools from different categories is fine, and often useful — a writing assistant and a research tool solve different halves of the same job. The table will show you exactly where they diverge.
Questions about comparing tools
How does the comparison work?
Add two tools to the comparison tray from any tool card, then open this page. The table pulls each tool's verified plan details, platforms, strengths and limits from its profile, so both columns carry the same kind of evidence, with a separate source-check date for each tool.
Do you declare a winner?
No. The table sets two tools against each other on documented facts, not on a score. Which one wins depends on your task, your budget and your usage volume — three things we cannot see from here.
Why are some cells empty or marked unverified?
Because we could not confirm that detail on the vendor's own pages. Rather than filling the gap with a figure from elsewhere, we mark it and say why on the tool's profile.
Can I compare more than two tools?
Not at once. Two columns keep the differences readable and force a real decision. Remove either selected tool to replace it, or clear both to start a new pair.
Every figure in the table above comes from the linked profile, where the source and the verification date are listed. Browse all tools or read the editorial policy.