| What it does | Learn programming by building real software with an AI tutor
| Autonomous AI coding agent with deterministic program repair
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| Stage | Not given
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| Founded | Not given
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| Based in | PT
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| Pricing model | Freemium
| Freemium
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| Pricing | Free: 2,000 credits once, no card required. Learner: 5,000 credits/month. Scholar: 11,000 credits/month. Fellow: 38,000 credits/month. Campus: contact for pricing. One-time top-ups available. Yearly plans offer 2 months free.
| Core Basic: free (20 CLI / 15 Web runs per day, 50K daily AST tokens). Apex Pro: $11/month (100 CLI / 75 Web runs per day, 250K daily AST tokens). Sovereign Ultra: $44/month (400 CLI / 300 Web runs per day, 1.0M daily AST tokens). Annual subscriptions include 2 months free.
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| Key features | - In-browser code editor and terminal for writing and running code
- Structured syllabuses with lessons that must be completed in order
- Knowledge checks after each lesson to verify understanding
- Final assessments taken without tutor assistance
- Generate custom courses for topics not in the catalog
- Progress is saved and can be resumed exactly where left off
- Credit-based usage allows flexible learning without seat-based fees
- Unused monthly credits roll over for up to two months
| - 4.1µs C-ABI latency native Rust Sub-Cortex execution
- Zero dirty diffs with strict AST grammar validation and dry-run verification
- Support for 6 production languages: Python, Rust, TypeScript/JavaScript, Go, C/C++, and Java
- Polyglot language engines with direct Tree-sitter CST surgery
- Machine-to-Machine sub-cortex infrastructure for autonomous agents
- Zero Code Retention policy with ephemeral in-memory processing
- 91.3% AST token pruning for repository context efficiency
- Multi-file repository context with automated test-runner verification
- Automated 5-Whys Root Cause Analysis and SRE incident diagnostics
- System-wide dependency mapping and security audit capabilities
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| What makes it different | - Full syllabus visible upfront before starting any lesson or course
- No expiring free credits: 2,000 credits to learn risk-free without providing payment info
- Projects run in the browser without requiring software installation
- Generate custom syllabuses on demand for any language or topic
| - Eliminates 95% of LLM token overhead through deterministic compiler verification instead of probabilistic inference loops
- Operates locally with strict Zero Code Retention policy—no code logging, storage, or model training usage
- Sub-microsecond repairs in CPU L1 cache without garbage collection pauses via native Rust FFI
- Engineered as M2M sub-cortex infrastructure for autonomous agents, not consumer chatbot utility
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| Free plan | Not given
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| Open source | Not given
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| Platforms | Not given
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| Public API | Not given
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 8 ▼ −1 (down) since last check | Not checked yet ● no change since last check |
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| Trust Flow (Majestic) | 5 | 0 |
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| Citation Flow (Majestic) | 30 | 15 |
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| Referring domains (Majestic) | 87 | 2 |
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Kronumos