Aethyro – AI chat SaaS, and a billing bypass I found by attacking my own product

Powered by Claude Opus 5, but built to do more than answer — Aethyro plans tasks, reads your documents, runs on a schedule, and reaches your tools automatically. No install. No subscription. Opens in your browser in seconds.

Most AI products are one model answering one message at a time. Aethyro sits Claude Opus 5 at the center of a live graph of five specialized subsystems — and routes every message through whichever ones it actually needs, automatically, with no setup from you.

Plans up to 6 steps, searches the web, synthesizes a report — fires only when a message needs real work done, not every turn.

Your uploaded documents, chunked and embedded — Claude pulls the exact passages it needs instead of guessing from a stuffed prompt.

Cron-scheduled prompts that run themselves — chainable into pipelines, forkable from a public gallery of real community routines.

Read-only GitHub and Notion access via your own personal access token — Claude lists repos and browses pages in-context.

Create an account in under a minute. 200 free credits land instantly — no card, no commitment.

Code, research, contracts, writing, planning — just describe what you need. Claude Opus 5 handles the rest.

Buy credit packs as you go. They never expire. No monthly pressure, no subscription anxiety.

No six subscriptions. No monthly pressure. No surprise bills. No data sold. Just Claude Opus 5, ready when you are.

Your data, never sold

Your queries go to Anthropic's Claude API to generate your response only. Aethyro never sells your data and Anthropic has a strict no-training policy on API inputs. Full detail — RLS enforcement, HMAC-signed deletion receipts, what we deliberately don't claim — on the Trust & Security page →

One assistant, every job

Code, document research, contract review, documentation, strategy — one place to ask, instead of juggling six different tools and subscriptions.

Credits that never expire

Buy a credit pack, use it whenever. No monthly pressure, no surprise invoices. Start free with 200 credits — no card required.

State-of-the-art model

Powered by Claude Opus 5 — Anthropic's most capable model. Not a cost-cutting tier. No install, no GPU, no setup. Works in any browser.

Aethyro embeds memory, retrieval, agentic execution, and live integrations — not as add-ons, but as first-class primitives wired into every conversation.

Semantic Memory

Every conversation is embedded with Voyage AI and stored in pgvector. Claude retrieves the most relevant past context automatically — no copy-paste, no re-explaining yourself.

Document RAG

Upload PDFs, markdown, or CSVs. Aethyro chunks, embeds, and retrieves the exact passages Claude needs — turning your files into a searchable knowledge base.

Agentic Tasks

Give Claude a goal. It plans up to 6 steps, searches the web, synthesizes information, and delivers a structured report — all autonomously, billed to your credit balance.

Scheduled Routines

Set a cron expression. Claude runs your prompt on a schedule — daily briefings, weekly summaries, auto-monitoring — and stores the results in your history.

GitHub & Notion

Connect your GitHub or Notion with a personal access token. Claude can list repos, read issues, search code, and browse your Notion pages — in-context, without copy-pasting.

Try it now

200 free credits on signup. No card required.

Aethyro is a single intelligent assistant powered by Claude Opus 5. There's nothing to configure — just describe what you need and it gets to work.

Code & Engineering

Write, review, debug, and document code. Python, JavaScript, TypeScript, SQL, and more. Security reviews against OWASP Top 10 included.

Documents & Research

Summarize contracts, extract key clauses, compare documents, and answer questions about your files — with citations.

Writing & Drafting

Emails, proposals, reports, SOPs, marketing copy, legal correspondence drafts — clear and ready to edit.

Strategy & Planning

Go-to-market plans, pricing strategy, competitive analysis, 90-day roadmaps. Structured and direct, not generic.

Analysis & Data

Interpret spreadsheets, financial statements, research data, and survey results. Explain the numbers, not just repeat them.

Workflows & Processes

Break complex tasks into clear steps. Build SOPs, checklists, project plans, and intake forms for any business process.

// powered by Claude Opus 5 · one conversation handles all of it

Pick a role — see real example tasks and the kind of output you get back. Powered by Claude Opus 5 in your browser.

A taste of your private assistant. Tap a question — or chat for real in Aethyro Cloud →

Buy credits, use them when you need them. Credits never expire. Start free with 200 credits.

// 200 free credits on signup · no credit card · credits never expire

Credits are billed per 1,000 tokens, by model — a request never costs less than 1 credit. Approximate examples, at the Starter pack's rate ($4 / 200 credits = $0.02/credit):

Actual cost scales with your real input/output length — see the exact per-model rates on developers.html.

Example: 15 quick questions, 5 longer explanations, and 1 deep review a week ≈ 43 credits — about $3/month on the Standard pack ($10/600 credits).

Honest breakdown. We're not the right fit for everyone — but for most people, the math is pretty clear.

*Model lineups change — checked Oct 2026.

Move the slider — see your real monthly cost vs a $20 subscription. No tricks.

// ~10 credits per conversation · Standard pack rate ($0.0167/cr) · actual cost varies by message length

Zero data training

Your queries generate your response only. Anthropic has a strict no-training policy on API inputs.

Credits never expire

Buy once, use whenever. No monthly pressure. Top up only when you need more.

State-of-the-art model

Powered by Claude Opus 5 — Anthropic's most capable model, not a smaller cost-cutting tier.

Browser-based

Nothing to install, update, or configure. Open it, type, done. Works on any device.

Where we're at Early, small, and built in the open — not padded with fake reviews.

Aethyro is solo-built and early. We'd rather say that plainly than invent customer quotes to look bigger than we are. The credits system means trying it costs nothing ongoing — and the Discord is the real place to ask real questions and see what people are actually building.

Join the Discord community →

See it in action Everything you need, in one window.

The Intelligence panel brings agentic tasks, your knowledge base, scheduled routines, and GitHub alongside every conversation — no tab-switching.

Real talk on AI tools, model updates, what's worth your time (and what's overhyped), and practical workflows you can steal. Free. No spam. No corporate fluff.

Join other Aethyro users to share setups, get help, and stay ahead of what's working in private AI.

// early community · be a founding member

// no card required · 200 free credits · response within 24 hours