# 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.

## Pools and pricing

Models are sold through pools: same API, different routes and rates. Each pool settles at a fixed rate of yuan per $1 of standard provider usage (market reference about ¥6.8/$1), so a ¥2 pool costs roughly 2/6.8 of standard price. Direct-route pools bill an explicit per-million-token price. The pool is chosen when creating an API key in the console. The same model can appear in several pools at different rates.

### DeepSeek (Anthropic)
Direct route billed per million tokens, near official list prices.
Models: `deepseek-v4-flash` ($0.162/1M in, $0.324/1M out), `deepseek-v4-pro` ($1.94/1M in, $3.88/1M out)

### Claude Fast (Anthropic)
Settlement rate ¥1.2 per $1 of standard usage, about 82% below the ¥6.8/$ market reference.
Models: `claude-3-5-haiku-20241022`, `claude-3-5-sonnet-20240620`, `claude-3-5-sonnet-20241022`, `claude-3-7-sonnet-20250219`, `claude-haiku-4-5-20251001`, `claude-haiku-4-5-20251001-thinking`, `claude-opus-4-1-20250805`, `claude-opus-4-20250514`, `claude-opus-4-5-20251101`, `claude-opus-4-5-20251101-thinking`, `claude-opus-4-6`, `claude-opus-4-6-thinking`, `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`, `claude-sonnet-5`

### Claude (Anthropic)
Settlement rate ¥2 per $1 of standard usage, about 71% below the ¥6.8/$ market reference.
Models: `claude-fable-5`, `claude-haiku-4-5-20251001`, `claude-opus-4-5-20251101`, `claude-opus-4-6`, `claude-opus-4-7`, `claude-opus-4-8`, `claude-sonnet-4-5-20250929`, `claude-sonnet-4-6`, `claude-sonnet-5`

### Claude Code Fast (Anthropic)
Settlement rate ¥2.3 per $1 of standard usage, about 66% below the ¥6.8/$ market reference.
Models: `claude-3-5-haiku-20241022`, `claude-3-5-sonnet-20240620`, `claude-3-5-sonnet-20241022`, `claude-3-7-sonnet-20250219`, `claude-fable-5`, `claude-haiku-4-5`, `claude-haiku-4-5-20251001`, `claude-opus-4-1-20250805`, `claude-opus-4-20250514`, `claude-opus-4-5-20251101`, `claude-opus-4-6`, `claude-opus-4-7`, `claude-opus-4-8`, `claude-sonnet-4-20250514`, `claude-sonnet-4-5-20250929`, `claude-sonnet-4-6`, `claude-sonnet-5`

### Claude AWS (Anthropic)
Settlement rate ¥5.4 per $1 of standard usage, about 21% below the ¥6.8/$ market reference.
Models: `claude-fable-5`, `claude-haiku-4-5-20251001`, `claude-opus-4-5-20251101`, `claude-opus-4-6`, `claude-opus-4-7`, `claude-opus-4-8`, `claude-sonnet-4-5-20250929`, `claude-sonnet-4-6`, `claude-sonnet-5`

### Claude Hermes (Anthropic)
Settlement rate ¥5.4 per $1 of standard usage, about 21% below the ¥6.8/$ market reference.
Models: `claude-fable-5`, `claude-haiku-4-5`, `claude-haiku-4-5-20251001`, `claude-haiku-4-5-20251001-thinking`, `claude-opus-4-1-20250805`, `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`, `claude-sonnet-5`

### Claude Failover (Anthropic)
Settlement rate ¥5.5 per $1 of standard usage, about 19% below the ¥6.8/$ market reference.
Models: `claude-fable-5`, `claude-haiku-4-5`, `claude-opus-4-6`, `claude-opus-4-7`, `claude-opus-4-8`, `claude-sonnet-4-6`

### Claude Official API (Anthropic)
Settlement rate ¥5.5 per $1 of standard usage, about 19% below the ¥6.8/$ market reference.
Models: `claude-haiku-4-5`, `claude-haiku-4-5-20251001`, `claude-opus-4-5`, `claude-opus-4-6`, `claude-opus-4-7`, `claude-opus-4-8`, `claude-sonnet-4-5`, `claude-sonnet-4-6`

### Gemini Fast (Gemini)
Settlement rate ¥2.72 per $1 of standard usage, about 60% below the ¥6.8/$ market reference.
Models: `gemini-2.0-flash`, `gemini-2.5-flash`, `gemini-2.5-flash-image`, `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-image-preview`, `gemini-3-pro-preview`, `gemini-3-pro-preview-thinking`, `gemini-3.1-flash-image-preview`, `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`

### Gemini Vertex Official (Gemini)
Settlement rate ¥5.4 per $1 of standard usage, about 21% below the ¥6.8/$ market reference.
Models: `gemini-2.0-flash`, `gemini-2.5-flash`, `gemini-2.5-flash-image`, `gemini-2.5-pro`, `gemini-3-flash-preview`, `gemini-3-pro-preview`, `gemini-3.1-flash-image`, `gemini-3.5-flash`

### GPT (OpenAI)
Settlement rate ¥0.5 per $1 of standard usage, about 93% below the ¥6.8/$ market reference.
Models: `codex-auto-review`, `gpt-5.2`, `gpt-5.3-codex-spark`, `gpt-5.4`, `gpt-5.4-mini`, `gpt-5.5`, `gpt-5.6-luna`, `gpt-5.6-sol`, `gpt-5.6-terra`, `gpt-image-1`, `gpt-image-1.5`, `gpt-image-2`

### Codex Fast (OpenAI)
Settlement rate ¥0.75 per $1 of standard usage, about 89% below the ¥6.8/$ market reference.
Models: `gpt-5.2`, `gpt-5.2-2025-12-11`, `gpt-5.2-chat-latest`, `gpt-5.2-pro`, `gpt-5.2-pro-2025-12-11`, `gpt-5.3-codex`, `gpt-5.3-codex-spark`, `gpt-5.4`, `gpt-5.4-2026-03-05`, `gpt-5.4-mini`, `gpt-5.5`, `gpt-image-1`, `gpt-image-1.5`, `gpt-image-2`

### Kimi (OpenAI)
Direct route billed per million tokens, near official list prices.
Models: `kimi-k2.6` ($0.456/1M in, $1.92/1M out)

### MiniMax (OpenAI)
Direct route billed per million tokens, near official list prices.
Models: `MiniMax-M2.7` ($0.259/1M in, $1.04/1M out)

### Z.ai (OpenAI)
Direct route billed per million tokens, near official list prices.
Models: `glm-5.1` ($0.918/1M in, $2.89/1M out), `glm-5.2` ($1.67/1M in, $5.25/1M out)

### GPT Image (OpenAI)
Settlement rate ¥1.25 per $1 of standard usage, about 82% below the ¥6.8/$ market reference.
Models: `gpt-image-1`, `gpt-image-1.5`, `gpt-image-2`

### GPT Azure (OpenAI)
Settlement rate ¥2.38 per $1 of standard usage, about 65% below the ¥6.8/$ market reference.
Models: `codex-auto-review`, `dall-e-3`, `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`, `gpt-image-1`, `gpt-image-1.5`, `gpt-image-2`, `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`

### OpenAI Stable (OpenAI)
Settlement rate ¥2.8 per $1 of standard usage, about 59% below the ¥6.8/$ market reference.
Models: `gpt-4o-mini`, `gpt-5`, `gpt-5.1`, `gpt-5.1-codex`, `gpt-5.2`, `gpt-5.2-codex`, `gpt-5.3-chat`, `gpt-5.3-codex`, `gpt-5.4`, `gpt-5.4-mini`, `gpt-5.4-nano`, `gpt-5.5`

## Links

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

## Key pages
- [Models and live pricing](https://relayrouter.io/models)
- [API documentation](https://relayrouter.io/docs)
- [Guides index](https://relayrouter.io/guides/)

## Guides
- [Anthropic v1 messages call fails on relayrouter header and versi](https://relayrouter.io/guides/anthropic-v1-messages-call-fails-on-relayrouter-header-and-versi.html)
- [Anthropic v1 messages call fails on relayrouter header and versi.zh](https://relayrouter.io/guides/anthropic-v1-messages-call-fails-on-relayrouter-header-and-versi.zh.html)
- [Charged but got an error response reading relayrouter usage logs](https://relayrouter.io/guides/charged-but-got-an-error-response-reading-relayrouter-usage-logs.html)
- [Charged but got an error response reading relayrouter usage logs.zh](https://relayrouter.io/guides/charged-but-got-an-error-response-reading-relayrouter-usage-logs.zh.html)
- [Chatgpt plus subscription vs relayrouter api credits which fits ](https://relayrouter.io/guides/chatgpt-plus-subscription-vs-relayrouter-api-credits-which-fits-.html)
- [Chatgpt plus subscription vs relayrouter api credits which fits .zh](https://relayrouter.io/guides/chatgpt-plus-subscription-vs-relayrouter-api-credits-which-fits-.zh.html)
- [Claude direct from anthropic vs through relayrouter cost and acc](https://relayrouter.io/guides/claude-direct-from-anthropic-vs-through-relayrouter-cost-and-acc.html)
- [Claude direct from anthropic vs through relayrouter cost and acc.zh](https://relayrouter.io/guides/claude-direct-from-anthropic-vs-through-relayrouter-cost-and-acc.zh.html)
- [Claude on aws bedrock vs claude via relayrouter setup latency an](https://relayrouter.io/guides/claude-on-aws-bedrock-vs-claude-via-relayrouter-setup-latency-an.html)
- [Claude on aws bedrock vs claude via relayrouter setup latency an.zh](https://relayrouter.io/guides/claude-on-aws-bedrock-vs-claude-via-relayrouter-setup-latency-an.zh.html)
- [Cors error when calling relayrouter from the browser why you nee](https://relayrouter.io/guides/cors-error-when-calling-relayrouter-from-the-browser-why-you-nee.html)
- [Cors error when calling relayrouter from the browser why you nee.zh](https://relayrouter.io/guides/cors-error-when-calling-relayrouter-from-the-browser-why-you-nee.zh.html)
- [Deepseek minimax and moonshot models via an openai compatible ga](https://relayrouter.io/guides/deepseek-minimax-and-moonshot-models-via-an-openai-compatible-ga.html)
- [Deepseek minimax and moonshot models via an openai compatible ga.zh](https://relayrouter.io/guides/deepseek-minimax-and-moonshot-models-via-an-openai-compatible-ga.zh.html)
- [Deepseek official api vs deepseek v4 on relayrouter pricing and ](https://relayrouter.io/guides/deepseek-official-api-vs-deepseek-v4-on-relayrouter-pricing-and-.html)
- [Deepseek official api vs deepseek v4 on relayrouter pricing and .zh](https://relayrouter.io/guides/deepseek-official-api-vs-deepseek-v4-on-relayrouter-pricing-and-.zh.html)
- [Deepseek v4 flash vs v4 pro on relayrouter speed quality and pri](https://relayrouter.io/guides/deepseek-v4-flash-vs-v4-pro-on-relayrouter-speed-quality-and-pri.html)
- [Deepseek v4 flash vs v4 pro on relayrouter speed quality and pri.zh](https://relayrouter.io/guides/deepseek-v4-flash-vs-v4-pro-on-relayrouter-speed-quality-and-pri.zh.html)
- [Fixing insufficient quota errors on relayrouter when your balanc](https://relayrouter.io/guides/fixing-insufficient-quota-errors-on-relayrouter-when-your-balanc.html)
- [Fixing insufficient quota errors on relayrouter when your balanc.zh](https://relayrouter.io/guides/fixing-insufficient-quota-errors-on-relayrouter-when-your-balanc.zh.html)
- [Gemini 3 5 flash vs pro on relayrouter which tier for which work](https://relayrouter.io/guides/gemini-3-5-flash-vs-pro-on-relayrouter-which-tier-for-which-work.html)
- [Gemini 3 5 flash vs pro on relayrouter which tier for which work.zh](https://relayrouter.io/guides/gemini-3-5-flash-vs-pro-on-relayrouter-which-tier-for-which-work.zh.html)
- [Getting 502 or 503 from relayrouter what upstream errors mean an](https://relayrouter.io/guides/getting-502-or-503-from-relayrouter-what-upstream-errors-mean-an.html)
- [Getting 502 or 503 from relayrouter what upstream errors mean an.zh](https://relayrouter.io/guides/getting-502-or-503-from-relayrouter-what-upstream-errors-mean-an.zh.html)
- [Gpt 5 5 or claude for a coding assistant how to choose on relayr](https://relayrouter.io/guides/gpt-5-5-or-claude-for-a-coding-assistant-how-to-choose-on-relayr.html)
- [Gpt 5 5 or claude for a coding assistant how to choose on relayr.zh](https://relayrouter.io/guides/gpt-5-5-or-claude-for-a-coding-assistant-how-to-choose-on-relayr.zh.html)
- [High time to first token on relayrouter how to measure and reduc](https://relayrouter.io/guides/high-time-to-first-token-on-relayrouter-how-to-measure-and-reduc.html)
- [High time to first token on relayrouter how to measure and reduc.zh](https://relayrouter.io/guides/high-time-to-first-token-on-relayrouter-how-to-measure-and-reduc.zh.html)
- [How relayrouter pricing works 30 percent below official with no ](https://relayrouter.io/guides/how-relayrouter-pricing-works-30-percent-below-official-with-no-.html)
- [How relayrouter pricing works 30 percent below official with no .zh](https://relayrouter.io/guides/how-relayrouter-pricing-works-30-percent-below-official-with-no-.zh.html)
- [How to access gpt 5 5 and gemini 3 5 with one api key](https://relayrouter.io/guides/how-to-access-gpt-5-5-and-gemini-3-5-with-one-api-key.html)
- [How to access gpt 5 5 and gemini 3 5 with one api key.zh](https://relayrouter.io/guides/how-to-access-gpt-5-5-and-gemini-3-5-with-one-api-key.zh.html)
- [How to handle 429 rate limit errors from relayrouter with retrie](https://relayrouter.io/guides/how-to-handle-429-rate-limit-errors-from-relayrouter-with-retrie.html)
- [How to handle 429 rate limit errors from relayrouter with retrie.zh](https://relayrouter.io/guides/how-to-handle-429-rate-limit-errors-from-relayrouter-with-retrie.zh.html)
- [How to stream chat completions through relayrouter](https://relayrouter.io/guides/how-to-stream-chat-completions-through-relayrouter.html)
- [How to stream chat completions through relayrouter.zh](https://relayrouter.io/guides/how-to-stream-chat-completions-through-relayrouter.zh.html)
- [How to switch your openai sdk to relayrouter with one base url c](https://relayrouter.io/guides/how-to-switch-your-openai-sdk-to-relayrouter-with-one-base-url-c.html)
- [How to switch your openai sdk to relayrouter with one base url c.zh](https://relayrouter.io/guides/how-to-switch-your-openai-sdk-to-relayrouter-with-one-base-url-c.zh.html)
- [How to use the claude api in china through relayrouter](https://relayrouter.io/guides/how-to-use-the-claude-api-in-china-through-relayrouter.html)
- [How to use the claude api in china through relayrouter.zh](https://relayrouter.io/guides/how-to-use-the-claude-api-in-china-through-relayrouter.zh.html)
- [Image generation returns 400 on relayrouter v1 images generation](https://relayrouter.io/guides/image-generation-returns-400-on-relayrouter-v1-images-generation.html)
- [Image generation returns 400 on relayrouter v1 images generation.zh](https://relayrouter.io/guides/image-generation-returns-400-on-relayrouter-v1-images-generation.zh.html)
- [Intermittent failures under traffic spikes with relayrouter conc](https://relayrouter.io/guides/intermittent-failures-under-traffic-spikes-with-relayrouter-conc.html)
- [Intermittent failures under traffic spikes with relayrouter conc.zh](https://relayrouter.io/guides/intermittent-failures-under-traffic-spikes-with-relayrouter-conc.zh.html)
- [Invalid model id when calling gemini 3 5 on relayrouter finding ](https://relayrouter.io/guides/invalid-model-id-when-calling-gemini-3-5-on-relayrouter-finding-.html)
- [Invalid model id when calling gemini 3 5 on relayrouter finding .zh](https://relayrouter.io/guides/invalid-model-id-when-calling-gemini-3-5-on-relayrouter-finding-.zh.html)
- [Json mode returns invalid json via relayrouter how to make struc](https://relayrouter.io/guides/json-mode-returns-invalid-json-via-relayrouter-how-to-make-struc.html)
- [Json mode returns invalid json via relayrouter how to make struc.zh](https://relayrouter.io/guides/json-mode-returns-invalid-json-via-relayrouter-how-to-make-struc.zh.html)
- [Llm output keeps repeating itself via relayrouter sampling param](https://relayrouter.io/guides/llm-output-keeps-repeating-itself-via-relayrouter-sampling-param.html)
- [Llm output keeps repeating itself via relayrouter sampling param.zh](https://relayrouter.io/guides/llm-output-keeps-repeating-itself-via-relayrouter-sampling-param.zh.html)
- [Malformed tool calls in responses through relayrouter troublesho](https://relayrouter.io/guides/malformed-tool-calls-in-responses-through-relayrouter-troublesho.html)
- [Malformed tool calls in responses through relayrouter troublesho.zh](https://relayrouter.io/guides/malformed-tool-calls-in-responses-through-relayrouter-troublesho.zh.html)
- [Model not found error on relayrouter checking your key s model g](https://relayrouter.io/guides/model-not-found-error-on-relayrouter-checking-your-key-s-model-g.html)
- [Model not found error on relayrouter checking your key s model g.zh](https://relayrouter.io/guides/model-not-found-error-on-relayrouter-checking-your-key-s-model-g.zh.html)
- [My relayrouter key works for gpt but not claude understanding mo](https://relayrouter.io/guides/my-relayrouter-key-works-for-gpt-but-not-claude-understanding-mo.html)
- [My relayrouter key works for gpt but not claude understanding mo.zh](https://relayrouter.io/guides/my-relayrouter-key-works-for-gpt-but-not-claude-understanding-mo.zh.html)
- [Openai sdk cannot connect after changing base url to relayrouter](https://relayrouter.io/guides/openai-sdk-cannot-connect-after-changing-base-url-to-relayrouter.html)
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