Pick your harness
Claude Code, OpenCode, Kilo Code, Pi, and Hermes work today.
Cheaper Claude access.
One API.
Point your agent harness at one compatible endpoint. Up to 75% below list price.
From your agent to the right model in five steps.
Inert gives your existing harness one stable way to reach the model route the task needs.
01 02 Connect Inert
Point your Anthropic- or OpenAI-compatible endpoint at the Inert gateway.
03 Choose a route
FableOpusMatch the route to the kind of work your agent is doing.
04 Fund your account
Add balance to your Inert wallet before requests begin routing.
05 Ship with one key
Keep one stable integration while the model route changes.
Switch one endpoint. Keep the workflow.
Inert sits between your agent and the model route you select, while preserving the Anthropic- or OpenAI-shaped request path your harness already speaks.
Your agent harness
Inert Gateway
Your selected route
FableOpus
One compatible endpoint
Your harness speaks the API shape it already understands.
A route you choose
Select the model behavior that matches the work in front of you.
Your account stays in control
Keys, balance, and route choices remain visible in one place.
Your key. Our Claude accounts.
Completions come from our pool of Anthropic accounts, not from a subscription you have to buy, renew, and spread across a team. Your harness holds one key, the accounts stay ours to run, and every request draws from your balance instead of a per-seat bill.
Our Claude account pool
One key for your harnessinert_sk_...
Your sideChoose a route for the work.
Route by task instead of rebuilding your integration around every model choice.
| Route | Best for | How it fits | Pricing /MTok | Access |
|---|---|---|---|---|
| Fable 5 | Advanced agent work | For ambitious coding, analysis, and dependable multi-step agent tasks. | You pay $2.50 in / $12.50 out | Claude account route |
| Opus 5 | Focused reasoning | For planning, architecture, and technical work that rewards careful thought. | You pay $1.75 in / $8.75 out | Claude account route |
More routes are in testing. Prices land here when they do.
We route it. We don't keep it.
We use Redis-compatible Valkey for expiring sessions and coordination state only. Prompt and completion content is never written to Valkey, Postgres, or application logs.
Read our privacy policyYour agentRequest goes out
InertRoutes transiently
Passes throughModelCompletion comes back
Redis / ValkeyExpiring state only.
Sessions, rate limits, and request slots expire by design.
- Request metadata
- No IP addresses or user agents retained.
- API keys
- Secret shown once; only its digest and short identifier are stored.
