100% BYOK · No account · 0% markup
Build your AI workforce.
Hire, direct, and scale AI agents across chat, code, and automation. Your API keys stay encrypted on your device, and you pay direct rates with 0% markup.
Paste your API key above to start with your own models.
- No account
- 0% platform markup
- Keys never leave your device
The platform for autonomous work.
Six real capabilities from your workspace to orchestrate, deploy, and scale agent workforces.
The web reaches your PC. Your PC stays yours.
SynthHires runs in your browser, so it can't reach your disk, your repos, or your terminals directly. The Bridge is a small, open-source daemon you install on your machine: it opens a single encrypted outbound tunnel to this web app. Your browser gains real agentic coding power over your machine, and your files never leave your computer.
Install the binary for your OS, open it, and connect automatically via localhost:7333. From then on, the Bridge shows up as another tool in chat: it reads your workspace, runs commands, and reviews diffs — always under your approval.
Real price comparison
What coding agents really cost, with real numbers
Subscription platforms vs BYOK: with a subscription you pay a flat fee and still burn credits; with BYOK you pay the provider per token. Neither is truly free. The difference is who keeps the markup.
SynthHires is BYOK today: free for everyone, tomorrow
Our plan: a free coding agent funded by contextual ads. No subscription, no markup. Today you bring your own key and pay only your provider; when we're big enough, ads between responses will keep SynthHires free for everyone, including you.
* Prices verified on each product's official pricing pages, October 2026. Subscription platforms bill token usage beyond credits. SynthHires bills you nothing: your provider invoices you at list price.
BYOK Economics & Privacy
The True Versatility of Bring Your Own Keys (BYOK).
Pay raw wholesale API rates directly to AI labs with 0% markup and no forced subscriptions. Your keys never touch a server and you retain 100% budget control.
0% Middleman Markup
Subscription platforms charge $20/mo whether you use them or not. At list prices, a typical 3K-token turn on GPT-6 Luna costs about $0.0005: the same $20 buys roughly 40,000 turns, and you only pay for the ones you send.
Live Multi-Provider Freedom
Switch mid-conversation between OpenAI, Anthropic, Google, xAI, DeepSeek, Mistral and Groq: one key each, pasted once. Route hard reasoning to a flagship and routine steps to a cheap tier without touching your setup.
Client-Side WebCrypto Vault
Keys are encrypted with AES-256-GCM in your browser before touching the network, and travel only as single-use encrypted envelopes. There is no server-side key vault: a breach of our database cannot expose credentials we never stored.
Stateless Runtime
Isolated Workers with no filesystem: sessions end when the request ends, and nothing survives unless you explicitly persist it to your own history. There is no long-lived server holding your context.
Three steps to your first agent.
From zero to your first agent in under a minute. No endless tutorials: each step is tangible and reversible.
- 01
Paste your key
We detect the provider from the key format and save it AES-GCM encrypted in your browser. Nothing to configure; or skip and try with limited models.
AES-GCM local - 02
Pick or build agents
Deploy from the catalog or craft your own: system prompt, tools, MCP connectors and approval gates. 14 roles ready, infinite custom.
14 roles + custom - 03
Connect and run
Chat, code via the Bridge on your machine, automate workflows and review every diff. Your keys, your data, zero retention.
optional Bridge
Architecture Comparison
Web, Terminal or Desktop: where each fits
An objective, current comparison (October 2026). No family wins everywhere: each one fits depending on how much you touch your disk, which models you want, and whether you work from several devices.
| Dimension | SynthHires (Web) | Terminal CLI | Desktop Apps |
|---|---|---|---|
| Delivery | Browser app on Cloudflare Workers. Chat, agents & media tools run without touching your machine. | Terminal program running on your own computer. | Installed desktop app running on your own computer. |
| Your disk & repos | Web-only can't reach your disk, repos or terminals. To code on your PC you install the Bridge: a small open-source daemon over an encrypted outbound tunnel, with per-action approval gates. | Full native local disk, git & headless terminal control (Claude Code, Codex). | Native editor access to local files and repos (Cursor, Windsurf, Zed). |
| Install | Zero install: ready in <2s in any browser. Bridge install only if you want local coding. | Python/Node, PATH & dependency setup; friction for non-developers. | Download & install binary; heavy local RAM footprint. |
| Model flexibility | Bring any OpenAI-compatible key: OpenAI, Anthropic, Google, Groq, DeepSeek, Mistral, Ollama and more, at direct wholesale rate. Zero vendor lock-in. | BYOK on open tools (Cline, Aider, OpenCode); single-vendor on Claude Code & Codex. | Vendor model by default; BYOK limited to a few providers or plans. |
| Pricing | Free tier: BYOK + contextual ads today; $9/mo removes them. Platform adds 0% markup. | Open CLIs (Cline, Aider, OpenCode): $0 platform. Your provider bills the tokens. Claude Code $20–200 · Codex $20–200 per month. | Cursor $20 (Pro) · Windsurf $20 · Zed free or ~$10 of hosted model credits. Monthly fees run whether or not you use them. |
| Usage & credits | No platform credits or overage. Your provider bills you per token at the API rate; we pass it straight through. | Open tools: pay-per-token, no cap. Claude Code / Codex: usage caps per plan. | Cursor: ~$20 usage pool (~500 fast / ~225 premium requests, then overage). Windsurf: 500 credits. Zed: $5–10 token credits. |
| Output & artifacts | Live rendered artifacts: interactive React, HTML & Mermaid, not ASCII. | Text-only output in the terminal. | Editor-native inline diffs, search & GUI canvas. |
| Devices | Multi-device: continue any session from phone or laptop in the browser. | Tied to one machine; no mobile handoff. | Tied to one machine; no mobile handoff. |
Our motivation
AI shouldn't be a privilege
Today you can use SynthHires free with your own keys: you pay only the lab's cost, with no subscriptions and no middlemen. That's the starting point, not the destination.
What's next
We want top-tier coding models to be unlimited and not tied to your wallet. We're working on a model sustained by respectful advertising that funds that access: you choose to see a few ads, and in exchange the best coding models are within reach, without limits. No tricks, no fine print.
To be realistic: we promise no dates and no magic. BYOK already works today, and ad-funded access will be built on that base with the same honesty.
The goal: the center of your AI
We don't want to be just another chat. We want to be the reference harness: the layer where you converse, write code, automate processes, and generate content, all with one language, your data, and your keys. One place where AI works with you, not for a platform.
Coding agents
Write, refactor, and run on your machine through the Bridge, with your consent at every step.
Process automation
Agents that orchestrate repetitive tasks, integrations, and workflows, not just answers.
Content generation
Writing, analysis, and research at the pace your team needs, with your keys and your context.
This is built with the people who use it
Every key you save, every session, every workflow you automate tells us what's missing. Use it, ask for what you need, and stay: this is just beginning.
Deploy your first agent fleet today
Bring a key, pick an agent, and see output in minutes. No infrastructure to provision, no platform keys to trust us with.