Meet Spark, Orbit and Cosmos — intelligent routers that pick the best model in the world for your task. You choose the tier; Zylo chooses the brain. And on top of the family, two products: Zylo AI Chat and Zylo Code.
Zylo isn't a single model. Each Zylo is an intelligent router that, behind one name, selects the best model for your request from a curated per-tier list — and only charges for what the task needs.
You pick the tier; Zylo does the rest — live, on every request.
Your request lands at the tier you asked for. Inside that tier, Zylo checks live pricing and availability and picks the best model from its curated list — never one outside it.
The pricier models in each pool are reserved for the tasks that truly need them. The price you pay per tier stays fixed, no matter which model answered.
If a model is down or saturated, Zylo automatically falls back to the next best on the list. Cosmos always keeps a flagship on standby.
Every response includes zylo.routing metadata telling you which tier and model answered, plus an estimated cost.
The “base” of each Zylo is the curated set of real models it can choose from. Each tier performs, at its ceiling, like the best model on its list.
| Tier | Base models (curated list) | Max context |
|---|---|---|
| ⚡ Spark | GPT-5.6 Luna · Gemini 3.1 Flash Lite · Llama 4 Scout (10M context) | up to 10M |
| ⚖️ Orbit | GLM 5.2 (primary) · GPT-5.6 Terra · Qwen 3.7 Max · DeepSeek V4 | up to 1M |
| 🧠 Cosmos | Claude Fable 5 · GPT-5.6 Sol · Claude Opus 4.8 · Gemini 3.1 Pro (+ omnimodal) | up to 1M |
Underneath the family sits a catalogue of 69 frontier models from 14 providers, callable directly by their real names (bare ids like claude-opus-4.8, gpt-5.5, gemini-3.1-pro — no vendor prefix).
What each tier can do, and the “capability ceiling” of the best model on its list.
| Capability | ⚡ Spark | ⚖️ Orbit | 🧠 Cosmos |
|---|---|---|---|
| Text | ✓ | ✓ | ✓ |
| Vision (images) | ✓ | ✓ | ✓ |
| Tool / function calling | ✓ | ✓ | ✓ |
| Audio / video | — | — | ✓ (omnimodal) |
| Max context | up to 10M | up to 1M | up to 1M |
| Code | basic | strong (write + review) | review only (bugs, security) |
| Deep reasoning | — | moderate | maximum |
| Streaming | ✓ | ✓ | ✓ |
Each Zylo tier has a fixed price — it doesn't vary with which internal model answered.
| Model | Input / 1M | Output / 1M | ≈ 1,000 requests* |
|---|---|---|---|
| ⚡ Zylo Spark 1.0 | $3 | $7 | ≈ $4.50 |
| ⚖️ Zylo Orbit 1.0 | $5 | $15 | ≈ $8.50 |
| 🧠 Zylo Cosmos 1.0 | $15 | $30 | ≈ $21.00 |
| Recommended mix — 70% Spark / 20% Orbit / 10% Cosmos | ≈ $6.95 |
100% OpenAI-compatible. Already using the OpenAI SDK? Change two lines — base_url and your key — and set the model to a Zylo tier or any catalog id.
curl https://api.zyloai.net/v1/chat/completions \ -H "Authorization: Bearer YOUR_ZYLO_KEY" \ -H "Content-Type: application/json" \ -d '{ "model": "zylo-1.0-orbit", "messages": [{"role": "user", "content": "Hello from Zylo!"}] }'
# pip install openai from openai import OpenAI client = OpenAI( api_key="YOUR_ZYLO_KEY", base_url="https://api.zyloai.net/v1", ) response = client.chat.completions.create( model="zylo-1.0-orbit", # or "claude-opus-4.8", "gpt-5.5", ... messages=[{"role": "user", "content": "Hello from Zylo!"}], ) print(response.choices[0].message.content)
// npm install openai import OpenAI from "openai"; const client = new OpenAI({ apiKey: "YOUR_ZYLO_KEY", baseURL: "https://api.zyloai.net/v1", }); const response = await client.chat.completions.create({ model: "zylo-1.0-cosmos", messages: [{ role: "user", content: "Review this diff for bugs..." }], }); console.log(response.choices[0].message.content);
Useful endpoints: POST /v1/chat/completions · POST /v1/zylo/chat · GET /v1/models · GET /v1/stats. Works in Cursor, Cline, aider, Continue and Roo Code.
Two ways to use the Zylo family without writing a single line of glue code.
A premium AI chat that does far more than talk — it runs code, browses the web for you, talks by voice, builds custom agents and connects to your tools.
An in-browser AI app builder. Describe what you want; an Architect agent plans it, writes real files, previews it live, tests it, pushes to GitHub and deploys — no local toolchain.
Spark, Orbit and Cosmos are intelligent routers. Behind one model id, each picks the best model for your task from a curated per-tier list — so you get quality without choosing a model on every request.
Yes — the model id is the tier. zylo-1.0-spark will never spend like Cosmos. And you can always call any catalog model directly by its own id.
Yes. Check zylo.routing.model in the response, along with the tier and an estimated cost.
Yes — set "stream": true like any OpenAI-compatible model, and pass your tools as usual. All three tiers support vision and function calling.
The Zylo family is in Beta and rolls out from the Go plan and up. The free Basic plan still gives you Basic-tier catalog models with a daily allowance.
Create a free account, grab an API key, and route to the best model with one line — no credit card to begin.
Get your free API key