Agnostic to harness, model, and compute. Session-focused. Each session is one object you control: its full transcript and cost, plus the harness, model, and compute it ran on. Checkout the usecases.
$
curl -fsSL https://cerver.ai/install.sh | bash
no card · $5 free tier · local runs on the subscriptions you already pay
01 — The mix
Most fleets run 100% frontier by reflex. Your work isn't 100% frontier-shaped: about a quarter earns the best model, the rest doesn't notice the difference. A routing policy — rules you write, or one line of auto — makes the mix deliberate.
Today · all frontier
10,000 sessions$4,000 / mo
Right-sized · 25 / 35 / 40
same 10,000 sessions$1,540 / mo · −62%
02 — Swap underneath
Same stage, same actor. The harness and the compute are props you can change mid-run — the transcript, the tools, and the identity stay bound.
transcript · sess_42live · 14 turns
harnessclaude
computevercel
03 — Compare
The comparison runs itself, in one session. A real diff — not vibes.
$ cerver run --compare claude codex "add idempotency to the webhook"
claude / sonnet passes · retries on 5xx
codex / gpt-5 passes · cleaner backoff ← better
→ you're now on codex for this task.04 — Anywhere
Hosted model sessions work instantly. When the session needs your repo, terminal, tools, or CLI agents, attach the relay and keep the same session boundary.
Models
Claude Opus 4.8
GPT-5
Grok 4
Gemma 4
Runtimes
Claude Code
Codex CLI
OpenAI SDK
xAI
Compute
Vercel
E2B
Cloudflare
Modal
your machine
05 — At scale
Fan out to thousands of sessions at once. Click any agent and watch its session — the chat, the model, the compute, the cost.
Spending limits, on by default
Every account ships with a monthly cap. A runaway agent stops at your number — never at a $17k surprise.
Metered, capped, predictable
$2 per 1M tokens, billed monthly for what you actually used. No usage, $0 invoice — and your cap bounds the bill.
Your subscriptions do the work
On your own machines, sessions ride the Claude Max / ChatGPT plans you already pay for. Marginal cost: ~zero.
06 — Start
$
curl -fsSL https://cerver.ai/install.sh | bash
Online sessions work instantly, no setup. This one command then connects your machine: sessions run there through your existing Claude Max or ChatGPT plan — no per-token bills — with your repos, tools, Claude Code, and Codex right where they live.
under a minute · $5 free tier
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