Photon: the AI coding agent
Updated
Photon is the AI coding agent from SentX SI. Describe what you want in a sentence, and a team of AI agents plans it, writes and runs the code, checks the result and hands back the finished work.
What Photon builds
Photon takes a request in plain language and returns finished work, not a snippet to paste. One team of agents carries the job from the plan to the checked result.
- Websites and web apps. Landing pages, dashboards, booking forms and multi-page sites, previewed in your workspace and published to a live link.
- Software, scripts and games. Tools, automations, data processing and games, written and run by the agents before the result reaches you.
- Documents and media. Reports and PDF, Word, Excel and PowerPoint files, charts and graphs, and images and video made for the project.
How Photon works
- Describe the result you want. One sentence is enough; add files or details when you have them.
- A lead agent plans the work and assembles a team of AI agents for it.
- The agents write, run and check the work in your workspace while you watch the plan and each agent's status.
- A Watcher checks every running task and steers it when it stalls, repeats itself or drifts from the request.
- Finished work arrives in Results, where you open it, preview it, download it or publish it.
Photon asks when a decision is yours to make, and can send a browser notification when a question is waiting or the work is finished.
A private workspace and a live link
Every account has its own workspace, and its files stay there between sessions. A page is visible only to you until you publish it; publishing puts its folder online at its own address on sentx.site. An account can publish up to 25 sites, each up to 3,000 files and 200 MB.
- Preview websites, documents and diagrams inside the workspace.
- Connect your own server so Photon can work on it, and open a terminal to it from the workspace.
- Write team instructions and reusable skills that the lead and every worker follow.
- Schedule a message so recurring work starts by itself.
- Set a daily, weekly or monthly spending limit.
Photon and Victoria
One SentX account opens both. Victoria is a frontier AI with advanced cognitive capabilities: she remembers, learns from every conversation and keeps improving herself. Photon is the builder that turns a request into finished work. Think with Victoria, build with Photon.
Plans that include Photon
| Plan | Plus | Pro | Ultra |
|---|---|---|---|
| Monthly price | USD 20 | USD 100 | USD 200 or USD 500 |
| Usage | Standard | 10x Plus | 20x or 50x Plus |
| Photon model | Standard | Pro | Pro |
| Storage for your projects | 25 GB | 50 GB | 100 GB |
| Max thinking mode | Not included | Not included | Included |
| Site address on sentx.site | Automatic name | Automatic name | Your own name |
Prices are in US dollars and billed monthly. Usage resets every week. If you reach a limit, keep working from your wallet balance or wait for the reset.
Questions about Photon
What is Photon?
Photon is the AI coding agent from SentX SI. You describe what you want, and a team of AI agents plans it, builds it and hands back the finished work: sites, apps, games, documents, charts, files, images and video.
What can Photon build?
Websites and web apps, software and scripts, games, reports and PDF, Word, Excel and PowerPoint files, charts and graphs, images and video. Finished work appears in Results, where you preview, download or publish it.
How is an AI coding agent different from an AI chat assistant?
A chat assistant answers, and you do the work. An AI coding agent does the work: Photon plans the task, writes and runs the code in a workspace, checks the result and delivers finished files or a live site.
Can Photon publish my website?
Yes. A page stays private until you publish it; publishing puts its folder online at its own address on sentx.site. An account can publish up to 25 sites, each up to 3,000 files and 200 MB. On Ultra you choose the site name.
Can Photon work on my own server?
Yes. Connect a server and Photon can work on it, and you can open a terminal to that server from the workspace.
How much does Photon cost?
Photon is part of the Plus, Pro and Ultra plans. Plus is USD 20 a month, Pro is USD 100 and Ultra is USD 200 or USD 500. Usage resets every week; past the limit, work continues from your wallet balance. Storage for your projects is 25 GB on Plus, 50 GB on Pro and 100 GB on Ultra.
Can I try Photon before paying?
Yes. A new account without a paid plan gets a one-time Photon trial. When the trial is used up, choose a plan to continue.
Do I need to know how to code?
No. You describe the result in plain language. Developers can go further: write team instructions, connect a server and read every file the agents wrote.
Articles about Photon
Photon delivered my project — what should I check before I accept it, if I can't read the code?
The short version: hold the delivered work against your brief, run it end to end in the private preview, test it at phone width, and confirm every promised element is actually there — before you publish, because a page is visible only to you until that moment. Photon, SentX SI's AI coding agent, hands back finished work, not a snippet to paste. You describe the result you want — one sentence is enough — and a team of agents plans the work, writes and runs the code, checks it and delivers it to Results, where you open it, preview it, download it or publish it. The check Photon describes — agents checking the result, a Watcher steering any task that stalls, repeats itself or drifts — runs while the job is in progress, and it is part of why the work arrives finished. But the decision to accept is yours, and the pass that supports it has to be one you can do without reading the code. You can: Photon's own page is explicit that no coding knowledge is required, and it treats reading the files the agents wrote as a developer capability. A non-developer's check is behavioral, not code-level, and that turns out to be exactly the right kind of check for the decision at hand.
Photon delivered my site — how do I ask for changes after launch without losing what works?
You ask for changes the same way you asked for the site: a plain-language request in your Photon workspace, and you lose nothing because your live site stays exactly as it is until you choose to republish. Every account has its own workspace, and its files stay there between sessions, so a change request does not start from scratch. The lead agent plans it against the site you already have, the worker agents run the change, and the result comes back as a private preview that only you can see. Publishing is the moment a page folder goes live at its sentx.site address — and until that moment, your current live version is still the one visitors see. The loop is: describe the change, review the private preview, republish only when it checks out.
Which kinds of work should I hand to an AI coding agent first — and which are better left to me or a chat assistant?
The fastest way to clear a mixed backlog is to sort it into three tiers, and the sort is easier than it looks, because each tier lines up with what the two SentX tools actually say they do. Send finished-work deliverables to the coding agent first, send the thinking to the chat assistant, and keep with yourself whatever has to stay exact, needs a final call, or needs to stay private. That ordering is my suggestion, built from the scope each product states for itself rather than from any measured rule, but it holds up line by line against what Photon and Victoria each describe. One account opens both, so the tiers are not a choice between vendors; you move a task from one tier to the next the way you would move a file between folders.
Which Photon plan should I start on — and what signal tells me to move up?
The short answer for Photon, SentX SI's AI coding agent, is to start with the one-time free trial, then begin on the smallest paid plan your actual weekly workload fits — for most people that is Plus, at USD 20 a month. The trial is not just a courtesy; it is a calibration run. The plan tiers are defined relative to Plus rather than in absolute numbers, so the only way to know which multiplier is yours is to watch what your own work costs in practice before you commit to a price.
Working With an AI Coding Agent as a Developer: How to Stay in Control
How developers keep control of an AI coding agent with Photon from SentX SI: team instructions, reusable skills, your own server, files you can read and spending limits.
From One Sentence to a Live Website: Publishing a Site With an AI Coding Agent
How to go from a one-sentence idea to a live website with Photon, the AI coding agent from SentX SI: describe the site, review the private preview, then publish it at its own address.
AI Coding Agent vs AI Chat Assistant: Which One Does Your Project Need?
A chat assistant answers and leaves the building to you. An AI coding agent such as Photon from SentX SI plans, builds and checks the work. How to tell which one a project needs.
I want an AI agent to build my website or app — what goes in my brief so the delivered work matches it?
The brief that works is not the longest one; it is the checkable one. Photon's reference page says one sentence is enough to start, and that you add files or details when you have them. The gap between that sentence and work that matches what you meant is filled by four things: what the thing is for, who uses it, what it must do, and what it must not do. If you can write those lines down, you can hold the finished work to them, and that last part is the whole point.