Unlimited messages
No daily cap, no monthly cap, no credits to run out.
Chat, documents, code and images, all uncapped.
By sending, you agree to our Terms and Privacy Policy.
The iPhone app is coming soon. Use Aelius in your browser for now.
No daily cap, no monthly cap, no credits to run out.
PDFs, spreadsheets and photos, read together. As many as the question needs.
Generate as many images as you need.
| ChatGPT | Claude | Gemini | Aelius | |
|---|---|---|---|---|
| Messages per day | Capped dynamic cap | 15–40 / 5h about 15 to 40 messages per 5 hours | Unlimited unlimited text | No cap no daily cap |
| Uploads images per day | 2 / day 2 per 24 hours | Shared cap counted against messages | Metered number not published | No cap no daily cap |
| Images generated per day | Capped daily cap | None not offered | Metered number not published | No cap no daily cap |
| Price to lift the caps | $20per month ChatGPT Plus | $20per month Claude Pro | $19.99per month Google AI Pro | $0free |
Free plans, as published October 2026. Metered: a limit exists, its number is not published.
The same loop as Claude Code, in the editor you already have.
export OPENAI_BASE_URL=https://code.aeliusai.com/v1 export OPENAI_API_KEY=$AELIUS_KEY export OPENAI_MODEL=qwen3.8-27b
Read August 2026: a composite of nine evaluations run the same way for every model, reasoning models at their maximum setting. Eleven of the 181 models on the board: the leader, the four either side of us, and the flagships we are above. Bars start at zero.
Our own JSON API for vision and schema-checked output, called from your own code. Access is asked for and granted by a person, not handed out on signup — which is what keeps the queue short enough to be worth having. Separate from Aelius Code above: that one is free with any account and needs no request.
curl -X POST https://aeliusai.com/api/ext/v1/vision \ -H "Authorization: Bearer $AELIUS_KEY" \ -H "Content-Type: application/json" \ -d '{ "prompt": "What is in this picture?", "images": ["https://example.com/photo.jpg"], "thinking": false }' # Response { "text": "…", "finish_reason": "stop", "usage": { "prompt_tokens": 1308, "completion_tokens": 638 } }
import base64, requests with open("document.jpg", "rb") as f: b64 = base64.b64encode(f.read()).decode() r = requests.post( "https://aeliusai.com/api/ext/v1/vision", headers={"Authorization": f"Bearer {KEY}"}, json={ "prompt": "Extract the document's title and date.", "images": [b64], "json_schema": { "type": "object", "properties": { "title": {"type": ["string", "null"]}, "date": {"type": ["string", "null"]}, }, "required": ["title", "date"], }, "thinking": False, }, timeout=120, ) print(r.json()["json"])
// From your server, not the browser. const form = new FormData(); form.append("image", file); form.append("options", JSON.stringify({ prompt: "Describe this image in one sentence.", thinking: false, })); const res = await fetch("https://aeliusai.com/api/ext/v1/vision", { method: "POST", headers: { Authorization: `Bearer ${process.env.AELIUS_KEY}` }, body: form, }); const { text, usage } = await res.json();
Tell us what you are building and we will come back to you. Free either way — the review is about capacity, not price.
Answered straight. The limits, the privacy terms and what it costs, in plain words.
Yes. Aelius is a free AI chat assistant with unlimited messages, unlimited file uploads and free image generation. It answers questions, writes and reviews code, reads your documents, and is never trained on what you type.
Aelius runs open-weights models on hardware we own and operate ourselves, so there is no per-token API bill to pass on to you. What it costs us is electricity, which does not climb with every message the way an API bill would.
There is no daily or monthly message cap and there are no credits to run out. A short rate limit exists to stop automated abuse, and ordinary conversation does not come close to it.
No. You can start a conversation straight away without signing up. A free account keeps your chat history across devices and lifts the limits that apply to guests.
There is no upload meter and no monthly allowance. Attach as many files as a question needs.
No. Your conversations are never used to train a model, and they are never sold or handed to advertisers.
Chats are saved to your account so you can come back to them. You can permanently delete any conversation, or delete your account and everything in it. Incognito chats are never written to disk at all.
Ask something now. Sign up when you want your history kept.