Claude Fable 5 API relay setup on Relay365 in minutes

Your first page at the Relay365 duty desk: signing up

Every new member's journey with Relay365 begins the same way: open the signup page, create an account, and the desk hands you a $0.25 signup credit before you have paid anything. That small credit exists so you can send a few real requests and watch the 值班台 (duty desk) answer before you commit to a larger top-up. Relay365 is an independent third-party relay, the account itself is kept in CNY, and the published rates are shown per 1 million tokens in approximate USD, so the numbers on screen feel familiar no matter which currency your bank uses.

Once the account exists, the next page you open is the dashboard. This is where Relay365 stops being a pricing page and starts being a working desk. You will see API keys with tags, a key bound to a 线路 (lane), and quick-wiring snippets that copy the base address straight into your project. There is a usage log holding the latest 200 requests, a ledger that separates wallet, bounty and pass accounts, in-site messages to the desk, and six interface languages. Nothing here asks you to guess where a charge came from.

The pricing table: every lane on one page

The third page a new member usually opens is the pricing page, and it is worth reading slowly. Every lane sits on one table, so you never hunt across separate sites to compare models. For Claude Fable 5 (wire name claude-fable-5) the four token types are priced separately: input $3.79, output $18.94, cache write $4.66, cache read $0.2917 per 1 million tokens. Against the official list price of input $10, output $50 and cache read $1, the Relay365 output rate is about 38% of official, which is exactly the kind of difference a small first top-up lets you feel in practice.

If you want a lighter lane for a quick test, Claude Haiku 4.5 (wire name claude-haiku-4-5-20251001) sits on the same table at input $0.3542 and output $1.70, with cache read $0.0278, about 34% of its official output rate. The point of the single table is simple: whichever model you wire up, the four columns are always input, output, cache write and cache read, each priced on its own, so a long conversation with heavy cache recall costs differently from a short one and you can see why.

The small first top-up and your first call

Billing at Relay365 is a prepaid wallet with no monthly fee, and every call is settled on the token counts the upstream reports. A call that fails upstream with a 502 or 503 is not billed, and a disconnected stream is billed only for what was actually used. If you change your mind, unused balance can be refunded within 14 days of a top-up, minus what was consumed and the payment channel's fees; bounty and promotional credit are not refundable.

So the natural next step is a small top-up, just enough to run real traffic. For example, if you send 1 million input tokens and 1 million output tokens a day to Claude Fable 5, that day costs $3.79 + $18.94 = $22.73 at Relay365, while the same volume at the official list price would be $10 + $50 = $60. That arithmetic is the whole reason to try before committing. When you make the call, remember the client rules: Claude models work only from the official Claude Code and Claude Desktop clients, version 2.1.285 or newer, and they do not work from Cursor, Cherry Studio, Cline, OpenCode, any SDK or cURL; those clients pair only with the GPT, DeepSeek, Kimi, GLM, Qwen, Grok, MiniMax and Hunyuan lanes. On the desk itself, an HTTP 429 appears if one key exceeds 120 calls in 60 seconds or if one account has more than 8 requests in flight, so a gentle first test stays well inside the limits.

Tracing the call in the usage log

After the first requests land, open the usage log. Each of the latest 200 requests shows the time, the model, input, output, cache recall, the charge and the result of the call, so every token you paid for can be traced back to a specific request. That traceability is what makes a pay-as-you-go wallet comfortable: you are not trusting a summary, you are reading the line items. The ledger beside it keeps the wallet, bounty and pass accounts separate, and in-site messages to the desk are there if a line ever looks wrong.

• If a request shows a 502 or 503 result upstream, Relay365 does not bill it, and the log lets you confirm that yourself.
• If a stream disconnects mid-reply, only the tokens actually delivered are settled, and the log records the real counts.
• If you refer other members, the bounty pays 18% at level 1 and 6% at level 2 of what referred members pay, withdrawable from $11.11 or movable into the wallet.

Looking ahead: duty passes when the desk earns your trust

A small first top-up is also the honest way to decide whether a 值守卡 (duty pass) makes sense later. Passes are optional, cover Claude and GPT only, and come with a dedicated key that never touches the wallet; other models always use the wallet. For example, the Claude 14-day pass costs $50.97 and draws up to $700 of quota at the duty-pass rate, with at most $380 of quota per 7 days, and the GPT 30-day pass costs $81.53 for up to $3000 of quota with at most $900 per 7 days. You do not need either of these on day one; the wallet alone is enough to try Claude Fable 5 properly.

By now you have walked the same path most new members take at Relay365: signup with the $0.25 credit, the dashboard with keys and lanes, the single pricing table with four separate token prices, a small top-up, a first call through Claude Code, and the usage log that proves where every cent went. The desk stays open around the clock, and the next request you send will sit right beside the last 200 in the log. Create a Relay365 account and make that first small top-up today.