Embed 1,000+ professional book summaries, audio clips, quizzes, and metadata directly into your product. One integration. Instant knowledge.
Important: No competing products
You may not use the Sumizeit API to build, operate, or power any product or service that competes with Sumizeit — including book summary apps, websites, or similar knowledge products. Use of the API constitutes acceptance of this restriction.
Starter
For indie devs and small apps just getting started.
Billed $29/month
Growth
For growing products that need audio, quizzes, and speed.
Billed $99/month
Business
For teams that need scale, analytics, and reliability.
Billed $299/month
Enterprise
For large organizations with custom needs and high volume.
Custom
Starting at $10,000/year
What You Get
Every endpoint returns clean, structured JSON. No scraping, no licensing headaches.
Access complete, professionally-written summaries for 1,000+ non-fiction books across business, psychology, science, and more.
Stream or download high-quality audio summaries. Narrated by professional voice artists. Perfect for listening apps and podcasts.
Embed animated video summaries. Ideal for platforms that want to offer engaging, visual learning experiences.
Title, author, category, cover image URL, publish year, ISBN, reading time, difficulty level, and more — all in one response.
Boost retention with ready-made quiz questions, key insights, and actionable takeaways for every book in our library.
Full-text search across the entire library. Filter by category, author, or reading time. Paginate results with cursor-based paging.
Plan Comparison
Not sure which plan fits? Here's a detailed breakdown.
| Feature | Starter | Growth | Business | Enterprise |
|---|---|---|---|---|
| Monthly requests | 5,000 | 25,000 | 100,000 | Custom |
| Text summaries | ✓ | ✓ | ✓ | ✓ |
| Audio endpoints | — | ✓ | ✓ | ✓ |
| Video endpoints | — | ✓ | ✓ | ✓ |
| Quiz & takeaways | — | ✓ | ✓ | ✓ |
| Bulk endpoints | — | — | ✓ | ✓ |
| Usage analytics | — | — | ✓ | ✓ |
| Uptime SLA | — | — | 99.9% | Custom |
| Commercial use | ✓ | ✓ | ✓ | ✓ |
| Support level | Priority email | Priority phone & email | Dedicated manager | |
| Custom licensing | — | — | — | ✓ |
| On-premise deployment | — | — | — | ✓ |
Use Cases
Teams across industries use the Sumizeit API to deliver knowledge experiences.
Add a curated book summary library to your e-learning platform. Students get concise, actionable knowledge from the best non-fiction books in minutes.
Ground your LLM responses in verified, high-quality book content. Use the API as a knowledge retrieval layer for RAG-based AI assistants.
Stream audio book summaries directly into your podcast app or audio player. Expand your content library overnight with zero production cost.
Give users a daily dose of self-improvement wisdom. Integrate curated book recommendations, insights, and quizzes into habit-building apps.
Offer employees structured micro-learning from top business and leadership books. Deliver summaries inside your existing LMS or Slack bot.
Build comprehensive book recommendation engines with our rich metadata. Surface the right book to the right reader at the right time.
Trusted By Teams
From startups to Fortune 500s — builders trust Sumizeit to power their knowledge features.
We integrated the Sumizeit API into our corporate learning portal in under a week. Our employees now have access to 1,000+ book summaries right inside Slack. Engagement went up 3x in the first month.
Our AI assistant needed a reliable source of curated non-fiction knowledge. Sumizeit's API gave us clean, structured summaries with audio we could feed directly into our retrieval pipeline. Game-changer.
We built a full book-summary feature into our wellness app using the Sumizeit API. The audio quality is excellent, the uptime has been rock-solid, and their team responded to our custom licensing request within 24 hours.
FAQ
After your payment is confirmed, our team will reach out within 1 business day with your API credentials, onboarding documentation, and a sandbox environment to test your integration.
All endpoints return structured JSON. Audio and video responses include secure streaming URLs. Pagination uses cursor-based tokens for consistency and performance.
Yes. All paid plans include a commercial use license. You may display summaries, audio, and video content within your product. Redistribution or resale of the raw API data is not permitted without an Enterprise license. You may not use the API to create or operate a product that competes with Sumizeit.
No. You may not use the Sumizeit API to build, operate, or power any product or service that competes with Sumizeit, including book summary apps, websites, or similar knowledge products. This restriction applies to all plans. If you're unsure whether your use case is allowed, contact us before purchasing.
We'll notify you when you reach 80% of your limit. If you exceed it, requests will return a 429 status code until your cycle resets or you upgrade. Contact us for a mid-cycle upgrade at any time.
We don't offer a self-serve free trial at this time, but you can contact our team to request a short sandbox access period before committing to a plan.
Yes. Monthly plans can be cancelled at any time before the next billing cycle. Yearly plans are billed annually — you can cancel renewal at any time. Downgrades and upgrades take effect on your next billing date.
We currently have 1,000+ books across business, psychology, productivity, health, science, and more. We add new titles every week. The full catalog is accessible via the /books list endpoint.
Pick a plan and our team will have you integrated within 24 hours. No long contracts. Cancel anytime.
