OsirisBrain
Single frontier reasoning model behind one OpenAI-compatible endpoint, billed pay-per-token.
What it does
OsirisBrain offers a single frontier reasoning model exposed through one OpenAI-API-compatible endpoint, so you point tools like opencode, Codex, or Cursor at its base URL with no code migration and no model selection. It handles reasoning, coding, and tool calls, and charges per real token with prepaid balance and no subscription. New accounts get welcome credit.
Core features
Single frontier reasoning model, no model picking
OpenAI-API compatible (chat, tool-calls, streaming)
Works with opencode, Codex, and Cursor
Pay-per-token prepaid balance, no subscription
Real-time consumption dashboard
Best for
→Drop-in replacement for the OpenAI API
→Power coding assistants and agents
→Avoid managing multiple model providers
→Pay only for tokens actually used
Pricing
Starter
$5
Pro
$20