head to head · open source
utopia vs ctx
utopia has 8,667 GitHub stars, 1,185 forks, 27 open issues and last shipped yesterday. ctx has 589 stars, 69 forks, 7 open issues and last shipped 22 days ago. utopia leads on adoption by 1,371% (8,667 vs 589 stars). utopia is written in Rust under Apache-2.0; ctx is written in Python under MIT. utopia has attracted 14% as many forks as stars, ctx 12%. utopia was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 2 topic tags (knowledge-graph, llm), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| utopia | ctx | |
|---|---|---|
| GitHub stars | ★ 8.7K | ★ 589 |
| License | Apache-2.0 | MIT |
| Written in | Rust | Python |
| Last push | 2026-11-04 | 2026-10-14 |
| Forks | ⑂ 1.2K | ⑂ 69 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick utopia if
- You weight community size — 8.7K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Rust
- You value the larger contributor base for long-term maintenance
pick ctx if
- You want the ctx feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Python
- You evaluated both and ctx fits your workflow better
About utopia
Utopia Philosophy · Quick start · Features · Roadmap The enterprise world model built by DeepLethe. It is the first open substrate for knowledge engineering that learns passively and governs itself. Where a knowledge graph or a vector store works to hold present knowledge, Utopia puts time awareness and ontology in the base layer: the knowledge system evolves as material arrives, and conflict detection, reasoning and decision making all run against that ontology. It deploys offline, so a company can stand up a knowledge foundation, a decision core its agents can trust, and a compliance audit trail on hardware it…
read the full utopia overview →
About ctx
ctx Find the cheapest AI coding setup that actually works on your repo. CTX Fit analyzes your repository, tests promising AI coding configurations against real tasks in it, and produces the winning configuration as a reviewable change — in your working tree with apply , or as a pull request with pr . It picks the cheapest setup that reliably works — reliability is a requirement, not a tie break — and if nothing beats what you already have, it says so. The winner is chosen by a fixed rule, not a score: discard every candidate below the reliability floor, then minimize attributable cost, then break ties toward the…
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Frequently asked questions
Is utopia or ctx more popular?
utopia has 8,667 GitHub stars and ctx has 589. utopia has the larger community by that measure.
Are utopia and ctx free?
Both are open source. utopia is licensed under Apache-2.0 and ctx under MIT. Neither carries a licence fee.
What is the difference between utopia and ctx?
utopia is written in Rust and ctx in Python. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, utopia or ctx?
Choose utopia if you want the larger community (8,667 stars) or its Apache-2.0 licence terms. Choose ctx if its feature set, stack or MIT licence fits better. Both are self-hostable.