Helicone logoReqKey vs Helicone · checked September 2026

A Helicone alternativethat meters your users, not your LLM bill.

Helicone went into maintenance mode after Mintlify acquired it in March 2026. ReqKey is actively developed and meters the other direction: your customers’ calls into your AI product.

  • A source for every claim
  • Where Helicone wins, too
  • Free for 5M requests a month

The short answer

Helicone proxies your calls to OpenAI and Anthropic to trace prompts and costs. ReqKey sits in your own API and gives each of your users a key, a credit balance, and a rate limit — so one user can’t burn through your model budget.

Helicone is a LLM gateway and observability. ReqKey is API keys, credits, rate limits, and request analytics for the API you sell.

ReqKey, in one line

Free for 5M requests a month. $25 for 10M. No per-seat fees.

See every tier

ReqKey and Helicone, line by line.

A filled mark shows who is stronger on that line; a dash means they’re comparable. Their wins are marked too.

  • How it runsReqKeySDK middleware inside your API — no proxy, no DNS changeHeliconeProxy in front of LLM providers (change the base URL)
  • API keys for your customersReqKeyYes — prefixed and hashed, one customer can hold many keysHeliconeNo — it meters your LLM calls, not your API
  • Credits and quotasReqKeyA balance per customer, any cost per call, refills every hour, day, week, or month, optional overageHeliconeRate limits by request count or cost per user or property
  • Rate limitsReqKeyPer customer, set on the plan, windows from 1 second to 24 hours, 429 with Retry-AfterHeliconeCustom limits on LLM traffic
  • Request analyticsReqKeyEvery request — endpoint, status, latency, customer — 30 days on Pro, plus an Analytics APIHeliconeLLM cost, tokens, and latency per user
  • Free tierReqKey5M requests a month, 1,000 keysHeliconeHobby: 10K requests, 7-day retention
  • First paid tierReqKey$25/mo for 10M requests and 100,000 keys, volume tiers to 1BHeliconePro $79/mo plus usage
  • Takes paymentReqKeyNo — ReqKey meters and enforces; you take payment with your own providerHeliconeNo

Helicone details from their own pricing pages and docs, checked September 2026. Sources below.

Why teams pick ReqKey over Helicone.

1

Actively developed

Helicone’s services are in maintenance mode — security fixes, new models, and bug fixes only.

2

Meters the right direction

ReqKey meters your customers’ calls to your API, which is how an AI product charges its users.

3

One credit currency

Charge 1 credit for a chat and 40 for an image, whichever model runs behind it.

4

No proxy between you and the model

Your app talks to the provider directly; ReqKey is asked once per user request.

5

500× the free tier

5M free requests a month against Helicone Hobby’s 10K.

When Helicone is the better pick.

We’d rather you pick the right tool than switch twice.

  • You only need prompt and response tracing plus cost analytics on your own OpenAI or Anthropic usage.
  • You accept a frozen roadmap for the features you already use.

Moving from Helicone in three steps.

  1. 1

    Keep tracing if you need it

    Prompt tracing and user metering are different jobs — you can run an LLM observability tool alongside ReqKey.

  2. 2

    Give each user a key and a balance

    Create a consumer per user with a credit allowance and a rate limit from their plan.

  3. 3

    Charge per action

    Add the middleware and price each route — chat, image, embedding — in credits.

ReqKey vs Helicone: common questions.

Something else? Ask the team or read the docs.

  • Helicone says its services remain live for the foreseeable future in maintenance mode: security updates, new models, and bug fixes.

  • Yes. Give the user a credit balance, charge each action what it costs you, and requests stop at zero until they refill or top up.

  • You set the price. Charge a flat cost per route, or check the key before a stream starts and settle the cost from the final token count when it ends — the two-phase pattern in the AI metering guide.

Sources

Checked on Helicone’s own pages in September 2026. Prices change — if something here is out of date, tell us and we’ll fix it.

Switching from Helicone?It takes an afternoon.

Free for your first 5 million requests every month. No card, no gateway, no rewrite.