# RelayRouter

> AI gateway for Claude, GPT and Gemini. Speaks three protocols: OpenAI, Anthropic and Gemini compatible APIs. Base URL `https://relayrouter.io`.

RelayRouter (relayrouter.io) is a unified AI API gateway. The most used models are the Claude line (especially `claude-opus-4-8` and `claude-fable-5`) and `gpt-5.5`, alongside Gemini 3.5 (`gemini-3.5-flash`), DeepSeek, MiniMax and Moonshot AI models. Mainstream model groups are priced 30% or more below official list prices, with no platform fee.

## Supported protocols

- OpenAI compatible: `POST https://relayrouter.io/v1/chat/completions` (works with the OpenAI SDK, baseURL `https://relayrouter.io/v1`)
- Anthropic compatible: `POST https://relayrouter.io/v1/messages` (works with the Anthropic SDK, base_url `https://relayrouter.io`)
- Gemini compatible: `https://relayrouter.io/v1beta` Google-style endpoints (e.g. `POST /v1beta/models/{model}:generateContent`)

## API quick reference

- `POST /v1/chat/completions` chat completions (OpenAI protocol, streaming supported)
- `POST /v1/messages` chat (Anthropic protocol, streaming supported)
- `POST /v1beta/models/{model}:generateContent` chat (Gemini protocol)
- `POST /v1/images/generations` image generation
- `GET /v1/models` lists models available to your key

Keep your existing SDK (OpenAI, Anthropic or Gemini client), point it at RelayRouter, swap the API key. No other code changes.

Authentication: `Authorization: Bearer YOUR_API_KEY` (create keys in the console: https://relayrouter.io/dashboard)
Payments: Stripe (credit / debit card)
Pricing: Mainstream model groups are priced 30% or more below official list prices. Live per-model rates: https://relayrouter.io/models
Failed or errored requests are never billed.

## Text models

- `claude-fable-5`
- `claude-3-5-haiku-20241022`
- `claude-3-5-sonnet-20240620`
- `claude-3-5-sonnet-20241022`
- `claude-3-7-sonnet-20250219`
- `claude-haiku-4-5`
- `claude-haiku-4-5-20251001`
- `claude-haiku-4-5-20251001-thinking`
- `claude-jupiter-v1-p`
- `claude-opus-4-1-20250805`
- `claude-opus-4-20250514`
- `claude-opus-4-5`
- `claude-opus-4-5-20251101`
- `claude-opus-4-5-20251101-thinking`
- `claude-opus-4-6`
- `claude-opus-4-6-thinking`
- `claude-opus-4-6-v1`
- `claude-opus-4-7`
- `claude-opus-4-8`
- `claude-sonnet-4-20250514`
- `claude-sonnet-4-5`
- `claude-sonnet-4-5-20250929`
- `claude-sonnet-4-5-20250929-thinking`
- `claude-sonnet-4-6`
- `claude-sonnet-4-6-thinking`
- `deepseek-v4-flash`
- `deepseek-v4-pro`
- `gemini-2.0-flash`
- `gemini-2.5-flash`
- `gemini-2.5-flash-lite`
- `gemini-2.5-flash-lite-preview-09-2025`
- `gemini-2.5-flash-nothinking`
- `gemini-2.5-flash-thinking`
- `gemini-2.5-pro`
- `gemini-2.5-pro-nothinking`
- `gemini-2.5-pro-thinking`
- `gemini-3-flash-preview`
- `gemini-3-flash-preview-thinking`
- `gemini-3-pro-preview`
- `gemini-3-pro-preview-thinking`
- `gemini-3.1-flash-lite-preview`
- `gemini-3.1-pro-preview-medium`
- `gemini-3.5-flash`
- `gemini-flash-latest`
- `gemini-flash-latest-nothinking`
- `gemini-flash-latest-thinking`
- `gemini-flash-lite-latest`
- `gemini-flash-lite-latest-nothinking`
- `gemini-flash-lite-latest-thinking`
- `gemini-pro-latest`
- `gemini-pro-latest-thinking`
- `gemini-robotics-er-1.5-preview`
- `minimax-m2.7`
- `MiniMax-M2.7`
- `kimi-k2.6`
- `codex-auto-review`
- `davinci-002`
- `gpt-3.5-turbo-1106`
- `gpt-4`
- `gpt-4-0125-preview`
- `gpt-4-0613`
- `gpt-4-1106-preview`
- `gpt-4-32k`
- `gpt-4-32k-0613`
- `gpt-4-all`
- `gpt-4-turbo`
- `gpt-4-turbo-2024-04-09`
- `gpt-4-turbo-preview`
- `gpt-4-vision-preview`
- `gpt-4.1`
- `gpt-4.1-2025-04-14`
- `gpt-4.1-mini`
- `gpt-4.1-mini-2025-04-14`
- `gpt-4.1-nano`
- `gpt-4.1-nano-2025-04-14`
- `gpt-4o`
- `gpt-4o-2024-05-13`
- `gpt-4o-2024-08-06`
- `gpt-4o-2024-11-20`
- `gpt-4o-all`
- `gpt-4o-mini`
- `gpt-4o-mini-2024-07-18`
- `gpt-5`
- `gpt-5-2025-08-07`
- `gpt-5-chat`
- `gpt-5-chat-2025-08-07`
- `gpt-5-chat-latest`
- `gpt-5-codex`
- `gpt-5-mini`
- `gpt-5-mini-2025-08-07`
- `gpt-5-nano`
- `gpt-5-nano-2025-08-07`
- `gpt-5-pro`
- `gpt-5.1`
- `gpt-5.1-2025-11-13`
- `gpt-5.1-chat`
- `gpt-5.1-chat-2025-11-13`
- `gpt-5.1-chat-latest`
- `gpt-5.1-codex`
- `gpt-5.1-codex-max`
- `gpt-5.1-codex-max-2025-12-04`
- `gpt-5.1-codex-mini`
- `gpt-5.2`
- `gpt-5.2-2025-12-11`
- `gpt-5.2-chat`
- `gpt-5.2-chat-2025-12-11`
- `gpt-5.2-chat-latest`
- `gpt-5.2-codex`
- `gpt-5.2-codex-2026-01-14`
- `gpt-5.2-pro`
- `gpt-5.2-pro-2025-12-11`
- `gpt-5.3-chat`
- `gpt-5.3-chat-2026-03-03`
- `gpt-5.3-chat-latest`
- `gpt-5.3-codex`
- `gpt-5.3-codex-spark`
- `gpt-5.4`
- `gpt-5.4-2026-03-05`
- `gpt-5.4-mini`
- `gpt-5.4-mini-2026-03-17`
- `gpt-5.4-nano`
- `gpt-5.4-nano-2026-03-17`
- `gpt-5.4-pro`
- `gpt-5.4-pro-2026-03-05`
- `gpt-5.5`
- `o1`
- `o1-2024-12-17`
- `o1-mini`
- `o1-mini-2024-09-12`
- `o1-preview`
- `o1-preview-2024-09-12`
- `o3`
- `o3-2025-04-16`
- `o3-mini`
- `o3-mini-2025-01-31`
- `o3-pro`
- `o3-pro-2025-06-10`
- `o4-mini`
- `o4-mini-2025-04-16`

## Image models

- `gemini-2.5-flash-image`
- `gemini-3-pro-image-preview`
- `gemini-3.1-flash-image`
- `gemini-3.1-flash-image-preview`
- `dall-e-3`
- `gpt-image-1`
- `gpt-image-1.5`
- `gpt-image-2`

## Links

- Console and API keys: https://relayrouter.io/dashboard
- Live model list and pricing: https://relayrouter.io/models
- Docs: https://relayrouter.io/docs