Cubent
Cubent is an autonomous AI coding agent that runs inside Visual Studio Code. It writes, refactors, debugs and documents code from plain instructions, runs terminal commands, and works with 23+ models or your own API keys.
What is Cubent?
Cubent is an autonomous AI coding agent packaged as a Visual Studio Code extension, published on the Marketplace by Logicent Technology Ltd, a company registered in the United Kingdom. Its documentation describes it as an agent that lives in your VS Code editor: it takes instructions in plain language, reads and writes files across the open workspace, runs terminal commands, automates browser actions and connects to any OpenAI-compatible or custom model endpoint. The Terms of Service also list JetBrains among supported environments.
Work happens through four surfaces. Chat Mode answers questions in the editor and applies the answer to real files in one click. Agent Mode takes a whole task and works through it with minimal supervision. Terminal integration lets it run and interpret commands. Custom Modes turn the agent into a specialised persona, a security auditor or a code reviewer, for example. An autocomplete engine drafts the next lines as you type, and an MCP integration extends the agent to external tools.
Model choice is the product's centre of gravity. Cubent ships access to more than twenty-three models from Anthropic, OpenAI, Google, DeepSeek and xAI, priced internally in Cubent Units that range from 0.3 per request for Gemini 2.5 Flash to 1.35 for Claude 3.7 Sonnet in thinking mode. Alternatively you bring your own API key and pay the provider directly, which is what the entry plan sells. The homepage additionally shows Cohere, Mistral and OpenRouter among supported providers.
For companies, a separate offer covers on-premise, SaaS or AWS deployment, fine-tuning on the company's own stack, and connections to GitHub, GitLab, Docker, PostgreSQL and MySQL. Cubent states that it never trains on customer code, describes a local-first design, and presents every suggestion as reviewable and every action as traceable. The product is young and says so: an early-access banner runs across the site, and two of the three advertised plans are still marked coming soon.
What it does
- Generate, refactor and debug code from an instruction written in plain language
- Work autonomously through multi-step tasks in Agent Mode, from a single request
- Read and write files anywhere in the open workspace, after indexing the codebase
- Run terminal commands, read their output and act on the result
- Complete code as you type, with each suggestion accepted, edited or skipped
- Write and update documentation from the code it has just read
- Take on specialised roles through custom modes, such as security auditing or code review
When to use Cubent / When not to
A quick filter to help you decide if Cubent is the right fit.
When to use Cubent
- Visual Studio Code developers who want an AI agent working directly in their editor rather than in a separate chat window
- Developers who already hold OpenAI or Anthropic API keys and want to keep paying their model provider directly
- Solo founders and freelance developers on side projects, for whom the 5 USD entry plan is the deciding factor
- Engineering teams evaluating an in-IDE assistant that can read a whole repository, run commands and open changes across files
- Organisations with strict code-confidentiality rules, drawn by the on-premise and air-gapped deployment options
When not to use Cubent
- Anyone who wants to code on a phone or in a browser: Cubent only exists as an IDE extension
- Non-technical builders looking for a no-code or prompt-to-app product, since every step assumes an editor and a repository
- Developers who need a public Cubent API to embed the assistant in their own tooling, as none is documented
- Buyers who require a signed DPA, a published subprocessor list or a SOC 2 certificate before installing anything
- Teams that need firm pricing today, since the Pro and Team tiers are still advertised as coming soon
How to use Cubent
A typical end-to-end flow, from setup to results.
- Check the prerequisites: Visual Studio Code 1.70.0 or later, an AI provider account and an internet connection
- Install the extension from the Marketplace by searching for Cubent in the Extensions view
- Or install it from a terminal with code --install-extension cubent.cubent, or manually from a downloaded VSIX file
- Sign in on app.cubent.dev to open an account and start the seven-day trial, which needs no credit card
- Choose your provider in the Cubent settings: OpenAI, Anthropic, or a custom endpoint you then test
- Paste the matching API key, or pick a built-in model if you are running on Cubent Units
- Set the basics: how much the agent may approve on its own, the context window, and any project-specific instructions
- Open your project and wait for Cubent to finish indexing the codebase
- Open the Cubent panel from the sidebar and send a first question to confirm the setup works
- Move on to Agent Mode for autonomous tasks, and create custom modes for recurring specialised work
Pros & Cons
Pros
- A 5 USD monthly entry price that is unusually low for an in-IDE coding agent
- Bring-your-own-key on that entry plan, with unlimited messages and conversations and direct billing by your model provider
- More than twenty-three models across five providers, switchable mid-project without changing tools
- A seven-day free trial that does not ask for a credit card
- A stated commitment not to train on customer code, with training gated behind an explicit opt-in
- On-premise and air-gapped deployment offered to enterprises that cannot send code outside their network
- Straightforward setup: one Marketplace install, a command-line alternative, and public product documentation
Cons
- Only the Byok plan can actually be bought: Pro and Team are marked coming soon and carry no published price
- The pricing page and the documentation describe two incompatible sets of tiers, and the documented free plan appears on neither the pricing page nor the checkout
- Data governance is thin: the GDPR is never mentioned, no DPA is offered, no subprocessor list exists and no hosting country is stated
- No security certification is published; industry certifications are promised only on a tier that is not yet available
- No postal address anywhere, only the statement that the company is registered in the United Kingdom
- Four footer links are dead, returning 404 for features, customers, community and changelog
- The company is very new and adoption is still small: the domain dates from June 2025 and the extension shows 3,392 installs and a single review
Pricing & Plans
The lowest paid entry point is the Byok plan at 5.00 USD per month, which includes a seven-day free trial that requires no credit card. The Pro and Team plans are announced but not yet priced, and the Enterprise plan is quoted on request. Whether a permanent free plan exists cannot be confirmed: the documentation describes a free tier with eight models, while the pricing page offers no such option. Subscriptions renew monthly until cancelled, and fees are non-refundable unless the law requires otherwise.
- VS Code extension with full AI coding assistance
- unlimited messages and conversations
- your own API keys
- Chat Mode and Agent Mode with tool calls
- terminal integration and custom modes
- access to 23+ models
- everything in Byok plus a generous Cubent Units allocation with no API key required
- advanced code generation and refactoring
- enhanced debugging and error analysis
- priority support
- everything in Pro plus a shared team workspace and configurations
- code review assistance and team insights
- advanced security and compliance
- SSO and backup control
- priority email support and training
- custom model integration and fine-tuning
- on-premise or air-gapped deployment
- SLA guarantees and 24/7 premium support
- a dedicated account manager
- compliance certifications
- Free
- Pro
- Growth
- Teams and Enterprise - with bring-your-own-key usable alongside any plan
Data, GDPR & hosting
A consolidated view of how Cubent handles your data.
GDPR overview
There is no mention of the GDPR anywhere on this site. Searching the whole collected corpus, pages and raw HTML alike, returns not a single occurrence of the regulation, in any spelling. No Article 27 representative is named, no data protection officer is designated, no data processing agreement is offered and no subprocessor list is published. What does exist is a privacy policy dated 13 June 2025 that grants, depending on your jurisdiction, rights of access, correction, deletion subject to exceptions, objection and withdrawal of consent, all exercised by writing to info@cubent.dev with possible identity checks. It also states that international transfers rely on standard contractual clauses and other safeguards where applicable. Those mechanisms resemble GDPR practice, but the publisher never claims compliance.
Who owns the data?
Under the Terms of Service, you keep every right to the content you submit, and Cubent keeps every right to the Service itself, including improvements derived from anonymised, aggregate usage data. You grant Logicent Technology Ltd a licence to process your prompts and code in order to return suggestions and to monitor the Service. Your inputs are not used to train models unless you opt in explicitly, submit them as feedback, or they are flagged for policy review. The privacy policy allows sharing with hosting, analytics, support and payment providers, with affiliates and contractors under confidentiality, on a business transfer, and where the law requires it. Cubent states it does not sell your data or use it for third-party advertising.
Reuse rights
You keep the rights to what you submit, so the code produced from your prompts is yours to use, ship and sell without asking Logicent Technology Ltd for permission. What is licensed to you, and only to you, is the software: a limited, non-exclusive, non-transferable and revocable right to install the extension on your own IDE and to use the Service for personal or internal business purposes. You may not reverse-engineer or decompile any part of it, reproduce it, resell it or sublicense it, and you may not use it for unlawful or harmful activity. Cubent gives no warranty on the output: the Service is supplied as-is, with no promise that suggestions will be accurate or error-free, so anything you reuse remains yours to review.
Data retention & training
Hosting summary
No hosting country or region is stated anywhere on the site. The privacy policy says only that personal data may be processed and stored in countries outside your jurisdiction, and that standard contractual clauses and other safeguards are used where applicable. Third-party providers handle hosting, but none of them is named and no subprocessor list is published. The homepage claims a local-first design with secure context handling, which suggests that part of the work stays on the developer's machine, though the claim is not detailed. Enterprise customers are offered on-premise, SaaS or AWS deployment, and in the on-premise case the hosting question moves to the customer's own infrastructure. The publisher is Logicent Technology Ltd, registered in the United Kingdom, with the terms governed by the laws of England and Wales, so that is the jurisdiction of the contract even though it says nothing about where data physically sits.
Things to keep in mind
Risks and trade-offs to weigh before adopting Cubent.
- The agent can write files across your workspace and run terminal commands, so the auto-approval setting deserves a deliberate decision rather than a default
- Suggestions carry no accuracy warranty under the terms, and code accepted without review is the fastest way to inherit a bug you did not write
- Leaning on an agent that understands your repository better than you do erodes exactly the familiarity you will need the day it is wrong
- With your own API key configured in the extension, your provider bills you directly and Cubent applies no spending ceiling of its own
- Training is off by default but remains an account setting, and an accidental opt-in exposes proprietary code
- No hosting country is published and international transfers are anticipated, so you cannot tell which jurisdiction holds your data
- Liability is capped at the greater of twelve months of fees or 100 GBP, which is a small number next to the cost of a serious incident
Setup & Integrations
Technical difficulty
Setup is easy for the audience it targets. Installing the extension takes one action in the VS Code Marketplace, or a single command line, and the prerequisite is simply VS Code 1.70.0 or later. Indexing of the workspace then happens on its own. The only real step is obtaining an OpenAI or Anthropic API key and pasting it into the settings, or pointing Cubent at a custom endpoint, which is routine work for a developer. Enterprise on-premise or air-gapped deployment is a different matter entirely and belongs to an infrastructure project.
Deployment
Integrations
Supported languages
Behind Cubent
Social
Resources
All the official URLs gathered for verification and reference.
Frequently asked questions
Which editors does Cubent run in?
How much does Cubent cost?
Is there a free trial, and is there a free plan?
Which AI models can I use?
Can I use my own API keys?
What is a Cubent Unit?
Will my code be used to train AI models?
Who is behind Cubent, and is it GDPR compliant?
Can Cubent be deployed inside our own infrastructure?
Is there a minimum age, and how do I cancel?
Should you pick Cubent?
Cubent makes a clear and legible promise: an autonomous coding agent that lives inside Visual Studio Code, reads the whole repository, runs commands, and lets you choose among more than twenty-three models or plug in your own API key for five dollars a month. For a developer already comfortable with an editor and holding a provider key, that is a genuinely low-friction, low-cost way to put an agent to work, and the stated refusal to train on customer code is the right default. The enterprise story, with on-premise and air-gapped deployment plus fine-tuning on your own stack, is ambitious for a company this young.
The reservations concern maturity and paperwork rather than the idea. Only one plan is actually purchasable; Pro and Team have been coming soon long enough to appear in both the pricing page and the terms without a figure. The site and its own documentation disagree about the tiers, and the free plan documented in one place is absent from the other. Four footer links return errors. The extension shows a few thousand installs and a single review, and the homepage testimonials are plainly generic filler rather than real customers.
The governance gap matters most for teams. The GDPR is never named anywhere on the site, there is no data processing agreement, no subprocessor list, no hosting country, no security certification and no postal address beyond registered in the United Kingdom. None of that makes the tool unusable on a side project, where the price alone justifies a trial. It does mean that anyone pointing Cubent at proprietary code should ask the publisher those questions directly before committing.
- Choosing a selection results in a full page refresh.
- Opens in a new window.