Cenius

Free plan APIWeb

What Cenius is

Cenius is a web and API service for turning plain-English project descriptions into planned, tested, deployable full-stack applications. Before construction, users can inspect and revise a structured plan, then approve an agent to write the project. Builds execute in isolated gVisor containers with toolchains such as npm, cargo, and forge. A live WebSocket feed reports agent turns, tool calls, file writes, and test runs as work progresses. Cenius lists more than 40 languages, 55 production-verified stacks, and a catalogue of 117 stacks. Finished builds can be sent to a new GitHub repository with one click. The public HTTP API handles project creation and management, while webhooks connect builds and payments with CI, Zapier, or n8n. Expo and Flutter mobile builds are in beta with web previews; native iOS and Android support is roadmap-listed. Sensitive data encryption, TLS 1.3, encrypted backups, privacy exports, and account deletion are described on its trust pages. A free signup includes 333,300 credits and one free planning loop; paid packs start at $5 a month.

Who it suits

Cenius names engineers, founders, and product teams as its intended users. It suits teams wanting API access, webhooks, structured planning, and sandboxed project builds.

What it does well

Plain-English project planning before agent execution
40+ languages and 117-stack catalogue
Isolated gVisor builds with real toolchains
Live WebSocket progress stream
One-click GitHub repository push

What to know first

GPU/ML workloads are Enterprise-only
GPU sandboxes limited to five minutes
Native iOS and Android are roadmap items
Mobile builds remain in beta

Plans

Plan	Billed and limits	Price
Signup credits	333,300 credits on signup · first planning loop free · no credit card required	Free
XL pack	one-time · 43,333,290 credits · +30% bonus	$100, paid once
Medium pack	one-time · 7,333,326 credits · +10% bonus	$20, paid once
Jumbo pack	one-time · 116,666,550 credits · +40% bonus	$250, paid once
Small pack	one-time · 1,666,665 credits	$5, paid once
Large pack	one-time · 19,999,980 credits · +20% bonus	$50, paid once
Whale pack	one-time · 249,999,750 credits · +50% bonus	$500, paid once

As cenius.ai lists them, read 12 Oct 2026. The maker's own page has the final word.

Verdict

Cenius combines plan review, automated full-stack building, progress visibility, and deployment handoff in a web and API service. Its free signup credits provide a way to begin, while advanced GPU work and native mobile targets have stated limits.

Facts from Cenius's own pages

API and webhooks: The public HTTP API supports project creation and management, and webhooks can connect builds and payments to CI, Zapier, or n8n. · cenius.ai, 12 Oct 2026
API integrations: Yes · cenius.ai, 21 Sept 2026
App types: both · cenius.ai, 21 Sept 2026
Build environments: Builds run in isolated gVisor containers with real toolchains such as npm, cargo, and forge. · cenius.ai, 12 Oct 2026
Free plan: Yes · cenius.ai, 21 Sept 2026
GitHub: Completed builds can be pushed to a new GitHub repository with one click. · cenius.ai, 12 Oct 2026
Live progress: A WebSocket stream shows agent turns, tool calls, file writes, and test runs in real time. · cenius.ai, 12 Oct 2026
Mobile publishing: No · cenius.ai, 21 Sept 2026
Mobile support: Cross-platform mobile builds through Expo and Flutter are in beta with web-target preview; native iOS and Android are listed as roadmap items. · cenius.ai, 12 Oct 2026
Notable limits: The pricing page says GPU/ML workloads are Enterprise-only and describes GPU sandboxes as limited to a 5 MB dataset and five minutes of wall time. · cenius.ai, 12 Oct 2026
Plan then build: Users review and revise a structured plan before approving the agent to write the project. · cenius.ai, 12 Oct 2026
Privacy controls: The trust page describes self-service data download, account deletion, and JSON export for GDPR access, erasure, and portability. · cenius.ai, 12 Oct 2026
Security: The trust page states that sensitive fields are encrypted at rest with AES-256-GCM, traffic uses TLS 1.3, and backups are encrypted nightly and restore-tested monthly. · cenius.ai, 12 Oct 2026
Stack coverage: Cenius lists 40+ languages, 55+ production-verified stacks, and a 117-stack catalogue. · cenius.ai, 12 Oct 2026
Support: The site directs product and security questions to the in-app chat; its vulnerability disclosure page promises acknowledgment within 72 hours. · cenius.ai, 12 Oct 2026
User authentication: Yes · cenius.ai, 21 Sept 2026
What it does: Cenius turns plain-English descriptions into planned, tested, deployable full-stack projects using sandboxed agents. · cenius.ai, 12 Oct 2026
Who it is for: Cenius names engineers, founders, and product teams as intended users. · cenius.ai, 12 Oct 2026

Where Cenius stands on Freedom251

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