SparkLore vs Sudowrite: What's Different (2026)
Sudowrite — The best-known English AI fiction tool, with its own Muse model and a Story Bible. Every plan has every feature; only credits differ.
SparkLore — The AI writing studio that gets your novel, web serial and screenplay finished. The story bible remembers, episodes hit their length, and prose converts to script.
If you write English genre fiction and like Muse's voice, Sudowrite is the most mature choice. If you write in Korean, need web-serial episodes or novel-to-script conversion, or want to know what a credit buys, SparkLore fits better. We do not yet have native apps or a plugin ecosystem.
Quick facts
- Sudowrite
- $19 / $29 / $59 per month, or $10 / $22 / $44 per month billed annually. No free plan (trial credits only). Credit burn varies up to 100x by model.
- SparkLore
- from $9.99/mo · 30 free credits (about 3,000 words)
- Official site
- www.sudowrite.comCommercial and indie genre novelists writing in English
Feature comparison
- Yes
- Partial
- No
- Unverified
| Feature | SparkLore | Sudowrite |
|---|---|---|
| Writing & memory | ||
| Story bible | Yes | Yes |
| Long-series memory | Yes | Partial |
| Web-novel episode mode | Yes | No |
| Script & format | ||
| Korean drama script format | Yes | No |
| US screenplay format | Yes | PartialBlog guides only, no format mode |
| Novel-to-script conversion | Yes | No |
| Export | ||
| Fountain / FDX export | YesFountain and FDX export; EPUB too | No |
| DOCX export | Yes | Yes |
| HWP compatibility | PartialHWP-compatible DOCX layout; no native .hwp yet | No |
| Korean market | ||
| Korean UI | Yes | No |
| KRW pricing | Yes | No |
| Billing | ||
| Transparent usage pricing | Yes1 credit ≈ 100 words | No |
| Bring your own key | No | No |
| Free plan | Yes | PartialTrial credits only |
| Platform | ||
| Collaboration | No | PartialShare links and comments, no live co-editing |
| Mobile app | NoWorks in mobile browsers; no native app | Yes |
| Offline | No | Unverified |
| Trust | ||
| No training on manuscripts | Yes | Unverified |
Pricing comparison
Competitor prices are shown in the currency of their official pricing page; tax and app-store prices may differ. A dash (—) means not applicable or unverified.
| Plan | Monthly | Annual (per month) |
|---|---|---|
Hobby & Student 225,000 credits/mo, no rollover | $19/mo | $10/mo |
Professional 1,000,000 credits/mo, includes Feedback | $29/mo | $22/mo |
Max 2,000,000 credits/mo, 12-month rollover | $59/mo | $44/mo |
| Plan | Monthly | credits/mo |
|---|---|---|
| Monthly subscriptions | ||
Spark For hobby writers · Projects 3 | $9.99/mo | 300 |
Author For serial and novel writers · Projects Unlimited | $22/mo | 1,200 |
Studio For prolific authors and teams · Projects Unlimited | $44/mo | 3,000 |
| Credit packs (no subscription) | ||
300 Credits valid 90 days, no auto-renewal | $7.99 one-time | 300 |
1,500 Credits valid 90 days, no auto-renewal | $29 one-time | 1,500 |
30 free credits (about 3,000 words) · 1 credit ≈ 100 English words. Subscription credits refill monthly and unused credits do not roll over.
Who it's for
Pick Sudowrite if
- Writers working in English who want Muse's prose
- People drafting by dictation in a native mobile app
- Power users who stack community plugins
Pick SparkLore if
- Korean web-novel writers publishing by episode
- Anyone moving a novel into a drama script or screenplay
- Writers who want a published words-per-credit rate and KRW or USD billing
Honest verdict
If you write English genre fiction and like Muse's voice, Sudowrite is the most mature choice. If you write in Korean, need web-serial episodes or novel-to-script conversion, or want to know what a credit buys, SparkLore fits better. We do not yet have native apps or a plugin ecosystem.
Sudowrite
Strengths
- Muse, a fiction-tuned in-house model with few filters and consistent prose
- Story Bible, Canvas, series support and 1,000+ community plugins
- Native iOS and Android apps with dictation
- AI editors and beta readers on Pro and above
Weaknesses
- Official docs admit credit use is unpredictable — the same 200 words cost 70 to 8,000+ credits depending on model
- Only the $44/mo Max plan rolls credits over. Trustpilot 2.9/5 with 'stolen credits' and surprise annual charges
- Export is DOCX only. No Fountain, FDX or EPUB; no screenplay format mode
- No Korean UI or KRW billing, no BYOK. Reviewers report it forgetting bible details
SparkLore
Strengths
- The story bible is injected into every generation and flags character and setting conflicts across long series
- Web-novel episode mode — the editor knows per-platform length targets and where to cut
- Novel → Korean drama script (S#) or US screenplay conversion, with Fountain, FDX, DOCX, EPUB and HWP-compatible export
- KRW and USD pricing, Korean and English UI, and a published words-per-credit rate
- A no-training-on-manuscripts commitment written into the terms
Weaknesses
- Launched in 2026 — the community and review footprint are still small
- No native mobile app, offline mode or real-time collaboration yet
- No bring-your-own-key and no proprietary fine-tuned model
- Few plugins and third-party integrations
FAQ
Does Sudowrite support Korean?
As of 2026-09-21 there is no Korean UI and no KRW billing. The models can produce Korean text, but the product is built for English-language writers.
How long do Sudowrite credits last?
The docs say there is no way to predict how many credits a feature will use. Their example: 200 words is about 70 credits on GPT-5 Nano and 8,000+ on Claude Opus. Unused credits do not roll over except on Max ($44/mo).
Can I write a screenplay in Sudowrite?
There are blog guides, but no dedicated screenplay format mode and no Fountain or FDX export. Export is DOCX only.
Last verified
Sources
- www.sudowrite.com/pricing
- docs.sudowrite.com/plans--account/wBnmhtSyMcWtk2BLzifGkz/how-many-credits-do-features-use/gizbySEGPVBM4U8J9EdsLu
- docs.sudowrite.com/using-sudowrite/1ow1qkGqof9rtcyGnrWUBS/exporting-files/3NtVWXcnwYaRCmPW2iwcCB
- docs.sudowrite.com/using-sudowrite/1ow1qkGqof9rtcyGnrWUBS/prose-modes--models/2X5FuivhsbwUiMNym5eUqm
- uk.trustpilot.com/review/www.sudowrite.com
This page is written by SparkLore. Competitor prices and features are taken from public sources and may change. Tell us if something is wrong.
A question mark means we could not confirm it in official docs — it does not mean the feature is missing.
Compare for yourself
30 free credits (about 3,000 words) on signup. No card required.