Zerouter

For developers (www.zerouter.ai): One API key gives you 29 models, including Claude, GPT, Gemini, Grok and Kimi. You pay per million tokens, with no monthly fee, at prices below official list rates: up to 77% lower on Claude and up to 93% lower on GPT. The model you request is the model that answers, with no substitution. Claude Code, Codex CLI, Cursor and similar tools work once you swap in the base URL and key, and every call's tokens and cost show up in your usage log.

For providers (provider.zerouter.ai): If you have more Claude, Codex or similar subscription quota than you use, connect the account and let it serve requests from other gateway users. You keep 80% of every settled call; the platform takes 20%. You can pause anytime, credentials stay encrypted and are never shown to callers, and earnings are logged per request and paid out in USDC.

Coding agents on a budget: Run Claude Code, Codex CLI or Cursor through Zerouter instead of the official APIs and pay less per token for the same models. Just swap the base URL and key.

One key for several providers: Switch between Claude, GPT, Gemini, Grok and Kimi in the same tool without managing separate accounts, keys and bills for each provider.

Comparing models on real tasks: Run the same prompt or coding task against different models and check the token count and cost of each call in the usage log.

Building apps and agents: Call models from your own product with the OpenAI or Anthropic SDK, LangChain, LlamaIndex, Vercel AI SDK or plain HTTP, with prepaid, pay-as-you-go billing and no monthly fee.

Cost tracking for small teams: See per-request model, token and cost records, and trace any issue by request ID.

Earning from unused subscriptions: If your Claude, Codex or similar subscription has quota left over each month, connect it at provider.zerouter.ai. It serves other users' requests, and you keep 80% of every settled call.