Pricing
Design for free. Unlock Chinilla AI and more with Pro.
Free
Learn and experiment with system design.
Build it yourself Everything you need to design, simulate, and share system architectures.
- Build 3 cloud projects, 7 blocks, 8 templates
- Simulate live runtime with 12 programmable behaviors
- Export PNG, SVG, clipboard, Mermaid, system spec, and interactive previews
- Save 20 snapshots + full JSON backup and restore
- Try AI 1 AI-generated design to try the wizard
- Learn beginner lessons (Module 1, beta)
Pro
Design and learn system architecture with your AI partner.
Chinilla AI Your AI architecture partner. Turn ideas, code, or docs into live, simulated architectures. 500 credits/month.
- Chat about your design and get instant feedback
- Generate full system designs from a prompt
- Paste code, get a visual architecture
- Upload docs or research, get a live diagram
- Export production-ready code from any diagram
- Connect a GitHub repo, get a live diagram
- Generate a PRD in one click
1 credit per action. Resets monthly.
- Everything in Free
- Learn system design interview prep (8 problems) + all learning modules
- Analyze stability scoring + Monte Carlo stress tests
- Unlimited cloud projects + animated GIF export + subsystems
- Live team collab real-time canvas + interview mode with rubric
Compare plans
| Feature | Free | Pro |
|---|---|---|
| Building blocks | All 7 | All 7 |
| Templates | 8 | All 16 |
| Runtime simulation | ||
| Programmable behaviors | ||
| PNG + clipboard export | ||
| Animated GIF export | ||
| Mermaid + Spec export | ||
| Version snapshots | Up to 20 | Up to 20 |
| JSON backup + restore | ||
| Cloud projects | 3 | Unlimited |
| Publish interactive previews | ||
| Pro only | ||
| AI credits | 1 design/month | 500/month |
| Find weaknesses before they ship | ||
| Monte Carlo reliability testing | ||
| Go from diagram to code | ||
| Zoom into any component | ||
| Generate a PRD in one click | ||
| Paste code, get a diagram | ||
| Upload research, visualize and publish | ||
| Learning modules | Module 1 (beta) | Module 1 + more soon |
| Live team collab (real-time canvas) | 1-on-1 (2 users) | |
| Interview mode (rubric + roles) | 8 templates | |
Questions
Can I use Chinilla without paying?
Yes. The free tier gives you the full canvas, all components, templates, runtime simulation, exports (PNG, SVG, Mermaid, Spec, JSON), and 3 cloud projects. No payment needed. Pro adds stability analysis, Monte Carlo stress tests, animated GIF export, AI features (chat, AI PRD, code-to-diagram mapping), unlimited projects, and subsystems.
What counts as an AI credit?
Any AI action uses 1 credit: chat messages, AI-generated designs, code mapping, and PRD generation. Stability analysis and Monte Carlo run locally and never use credits. Deterministic exports (Mermaid, System Spec) and runtime simulation also do not use credits. Credits reset on your billing date each month.
Can I cancel anytime?
Yes. Cancel from your dashboard. You keep all designs (local and cloud) forever. AI features stop working but your data is always yours.
Do you train on my designs?
No. Your designs are never used for model training. AI features use xAI's Grok on a per-request basis with no data retention.
What is your refund policy?
We don't offer automatic refunds, but if something went wrong, contact us and we'll review your case.
