# TokenArmy

> Pay-as-you-go API for Claude models only. Native Anthropic Messages (/v1/messages), plus an OpenAI-compatible Chat Completions format (/v1/chat/completions) for clients that only speak OpenAI; both serve the same Claude models, streaming included. Billed per token from a prepaid USD balance. Other models (gpt-*, grok-*, ...) are rejected with 400 model_not_supported.

Base URL (Anthropic SDK, Claude Code): https://relient.cfd
Base URL (OpenAI-compatible SDKs and clients): https://relient.cfd/v1
Auth: Authorization: Bearer sk-ta-... or x-api-key: sk-ta-...

## Docs
- [Quick start](https://relient.cfd/docs)
- [Authentication](https://relient.cfd/docs/authentication)
- [Anthropic format](https://relient.cfd/docs/anthropic)
- [OpenAI-compatible format](https://relient.cfd/docs/openai)
- [Billing and balance API](https://relient.cfd/docs/billing)
- [Errors](https://relient.cfd/docs/errors)
- [Claude Code](https://relient.cfd/docs/clients/claude-code)

## Models (USD per million tokens: input / output, multiplier on list price)
- claude-fable-5-1: 3.000 / 15.000 (0.3×)
- claude-opus-5-5: 1.000 / 5.000 (0.25×)
- claude-sonnet-5-5: 0.500 / 2.500 (0.25×)
- claude-fable-5: 3.000 / 15.000 (0.3×)
- claude-opus-5: 1.250 / 6.250 (0.25×)
- claude-opus-4-8: 1.250 / 6.250 (0.25×)
- claude-opus-4-6: 1.250 / 6.250 (0.25×)
- claude-sonnet-5: 1.050 / 5.250 (0.35×)
- claude-sonnet-4-6: 1.050 / 5.250 (0.35×)
- claude-haiku-4-5: 0.400 / 2.000 (0.4×)