Zro (by MoonMath): Pricing, Features & Best Use Cases

Our take: Choose Zro if you run coding agents such as Claude Code or Codex on open-weight models and need a stated zero-retention, no-training endpoint with EU or US routing.

Main limitation: Monthly plans cover estimated token totals, not fixed allowances, and agent tool calls (web search, fetch) are billed per call on top.

By the AI Tool Atlas editors. Based on the vendor's official documentation; we have not tested this product hands-on. What “documented overview” means

Who should use Zro (by MoonMath)

Choose Zro if you run coding agents such as Claude Code or Codex on open-weight models and need a stated zero-retention, no-training endpoint with EU or US routing. Based on the vendor's documentation, not on a hands-on test.

Best for: Developers running coding agents on open models

Also a good fit for

Teams wanting private inference

Consider another tool if paid plans: Pro $20/mo, Max $60/mo

Or if

Token totals are estimates, not fixed allowances
Agent tool calls are billed separately

Zro (by MoonMath) pricing and usage limits

Prices checked Sep 29, 2026 on the official US pricing page. Official pricing ↗ Prices and limits change often.

The official Zro (by MoonMath) pricing page as we saw it. zro.moonmath.ai, captured Oct 1, 2026

Free access and trial conditions

No free tier; a one-time $5 usage credit needs no subscription.

$5 one-time credit.

Paid plans: what changes as you upgrade

Starter credit Web

$5 one-time source (opens in a new tab)

One-time

For: Trying the endpoint before subscribing

Limits

No subscription
No recurring charges

Includes

$5 usage credit

API included

Pro Web

$20/mo source (opens in a new tab)

Month, annual commitment

$16/month billed yearly

For: Everyday coding-agent work

Limits

About 1B tokens expected monthly usage (estimate)
3x usage vs base

Includes

Open coding models
OpenAI-compatible API

2 more

Zro CLI launcher
Agent tools

API included

Max Web

$60/mo source (opens in a new tab)

Month, annual commitment

$48/month billed yearly

For: Heavier, longer-running agent work

Limits

About 5B tokens expected monthly usage (estimate)
5x usage

Includes

Everything in Pro

API included

Usage packs Web

$5 one-time source (opens in a new tab)

One-time

For: Top-ups beyond the monthly budget

Limits

Available with or without a subscription

Includes

Prepaid usage balance

API included

Team / Enterprise Web

Custom pricing source (opens in a new tab)

Unknown

For: Teams needing processor terms

Limits

Details on plans pages in docs

Includes

Formal DPA available

Usage caps, credits and extra costs

Agent tool calls are billed per call: web search $0.02/$0.20, fetch $0.01/$0.02.

Not stated.

What is Zro (by MoonMath), and how does it work?

Zro is an inference service from MoonMath that serves open models such as GLM, Kimi and DeepSeek through an OpenAI-compatible API and a Messages API. A CLI launches coding agents like Claude Code and Codex against it. The site states zero request retention and no training on customer requests.

Zro (by MoonMath)'s official site: how the product presents itself. zro.moonmath.ai, captured Oct 1, 2026

What you provide and what you get back

What you give Zro (by MoonMath) and what comes back, from its documentation

You provide

Prompts via OpenAI-compatible chat completions/Responses
Anthropic-style Messages requests
Coding-agent sessions launched by the CLI

You get back

Streaming model completions
Tool-call results (search, fetch)

Where you can use it

Platforms: API
Account: Required
Agents: Claude Code, Codex CLI, OpenCode, Hermes, OpenClaw, Pi, Cursor, Cline
Models: GLM-5.3, DeepSeek V4.1 Flash, Kimi K3
API: OpenAI-compatible and Messages
Regions: Europe, United States

What people use Zro (by MoonMath) for

Scenarios are worked out by our editors from the documentation; the actual result depends on your input and plan.

Running Claude Code or Codex on open models

Who: Developers who want coding agents on GLM, Kimi or DeepSeek
You provide: A coding agent launched through the zro CLI
Expected result: Agent runs against an open model through Zro endpoint
Plan needed: Pro or Max
Limitation: Model choice limited to the listed open models source (opens in a new tab)

Long-context multi-turn coding sessions

Who: Developers with long agent sessions
You provide: Large repo context across many turns
Expected result: Cached, low-latency turns on a tuned endpoint
Plan needed: Pro or Max
Limitation: Token totals are estimates source (opens in a new tab)

OpenAI-compatible API calls

Who: Teams with existing OpenAI-style clients
You provide: Base URL and API key swapped in
Expected result: Existing client works against Zro models
Plan needed: Any with API key
Limitation: Needs a Zro key with chosen region source (opens in a new tab)

Private inference with regional control

Who: Teams with EU or US data-location needs
You provide: API key set to Europe, US or either
Expected result: Inference limited to the allowed region
Plan needed: Team or Enterprise for DPA
Limitation: Gateway auth and billing are not region-bound source (opens in a new tab)

What Zro (by MoonMath) does, and where it stops

Feature overview on the official site. zro.moonmath.ai, captured Oct 1, 2026

OpenAI-compatible and Messages APIs

Accepts chat-completions/Responses calls at /v1 and Anthropic-style Messages requests at /v1/messages. Lets existing clients and agent tools switch by changing the base URL.

Access: All plans with an API keyLimit: Only the listed open models are served source (opens in a new tab)

Zro CLI launcher

npm package @moonmath-ai/zro logs in once and launches Claude Code, Codex, OpenCode, Hermes, OpenClaw or Pi with temporary session config. Avoids hand-editing each agent's config.

Access: Pro, Max and credit usersLimit: Cursor and Cline need manual setup source (opens in a new tab)

Multi-region endpoints (Europe, United States)

Each API key sets inference to Europe, the United States or either region. Keeps request content in an allowed region.

Access: Set when creating an API keyLimit: Applies to inference only, not billing or analytics; request may fail if no allowed capacity source (opens in a new tab)

Prompt caching

Caches repeated prompt prefixes so long agent sessions cost fewer tokens. Cuts cost and latency in multi-turn work.

Access: Documented in docsLimit: Actual savings vary by prompt shape source (opens in a new tab)

Agent tools: web search and fetch

Per-call web search with source URLs and URL fetch returning markdown. Gives agents live web context.

Access: Billed per callLimit: Run via Linkup; GitIngest and AnyDoc are marked coming soon source (opens in a new tab)

Zro (by MoonMath): strengths and limits

Reasons to choose Zro (by MoonMath)

Zero request retention and no training on requests are stated Sensitive source code is not stored by the gateway per the privacy notice documented source (opens in a new tab)
$5 starter credit without a subscription You can test an agent workflow before paying monthly documented source (opens in a new tab)
Works with Claude Code, Codex, OpenCode, Hermes, OpenClaw and Pi via one CLI Switching agents does not need new endpoints documented source (opens in a new tab)
Docs list models, regions and per-key controls Easier to plan capacity and spend documented source (opens in a new tab)
Both OpenAI and Messages API shapes Most existing clients connect without code changes documented source (opens in a new tab)

Check before paying for Zro (by MoonMath)

Pro $20/mo and Max $60/mo are the paid tiers Heavy users pay monthly or buy usage packs documented source (opens in a new tab)
Token totals are estimates, not fixed allowances Real monthly usage can differ from ~1B/~5B documented source (opens in a new tab)
Agent tool calls are billed separately Search-heavy agents cost more than the plan price documented source (opens in a new tab)
Requires an account and API key No anonymous use documented source (opens in a new tab)
Only open-weight models, no closed frontier models Quality ceiling is the open models documented source (opens in a new tab)

How to use Zro (by MoonMath) for running a coding agent on open models

Zro (by MoonMath) documentation: where the steps below come from. zro.moonmath.ai, captured Oct 1, 2026

Set up Zro (by MoonMath)

Create a Zro account on zro.moonmath.ai
Create an API key and choose Europe, United States or either region
Run npm install -g @moonmath-ai/zro
Run zro login once

Example: running a coding agent on open models

Run zro launch claude --model glm-5.3
Give the agent a task in your repository
Watch usage and spend in the account dashboard

Review and export the result

Confirm the agent responds with the chosen model
Check usage balance decreased as expected

Example prompt suggested by our editors (not a recorded output of the product)

Refactor the auth module to remove duplicated token checks and run the tests.

Zro (by MoonMath) API

Zro (by MoonMath) documentation (continued). zro.moonmath.ai, captured Oct 1, 2026

API access and separate billing

Zro (by MoonMath) has no public API in its official documentation. Base URL https://zro.moonmath.ai/v1; Messages at /v1/messages API documentation ↗

Privacy, data use and commercial rights

Summarized from the vendor's current policies; this is not legal advice and a vendor's badge is not an independent audit.

How your inputs and outputs are handled

Prompts and completions are processed transiently to answer the request.

Not used for training, fine-tuning or evaluation without explicit agreement.

Prompts, responses and request bodies not retained; content logging disabled at gateway.

Commercial use and plan restrictions

Not stated on reviewed pages.

DPA mainly for Team and Enterprise.

Controls for business users

Per-key region setting
DPA on request
Per-key controls

Policies: zro.moonmath.ai/privacy

Zro (by MoonMath) alternatives by need

"Better suited" is based on documented features and pricing, not on a head-to-head test.

Claude: better suited to

Cursor: better suited to

GitHub Copilot: better suited to

Devin Desktop (formerly Windsurf): better suited to

Alternatives
Alternative	Pricing	Limitation
Claude	—	—
Cursor	—	—	Compare
GitHub Copilot	—	—	Compare
Devin Desktop (formerly Windsurf)	—	—	Compare

Explore Zro (by MoonMath) further

Zro (by MoonMath) pricing, plan by planEvery plan with USD prices, limits and what is free.Best Zro (by MoonMath) alternativesTools for the same job, by need and starting price.Best AI coding toolsOur picks in this category, compared by price and free tiers.

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Zro (by MoonMath) FAQ

Which models can I use on Zro?

GLM-5.3 and GLM-5.3 Flash, DeepSeek V4.1 Flash, Kimi K3 and Dolly 1 Security are listed; availability is shown per region when you create a key. source (opens in a new tab)

Does Zro keep my prompts?

No. The privacy notice says prompts, responses and request bodies are not retained and there is no setting that enables retention. source (opens in a new tab)

Can I choose where inference runs?

Yes. Each API key allows Europe, the United States or either; all requests still pass through the EU gateway for authentication. source (opens in a new tab)

Are the Pro and Max token totals guaranteed?

No. The ~1B and ~5B figures are expected totals based on typical cached agent usage, not fixed allowances. source (opens in a new tab)

Which coding tools launch with the zro command?

Claude Code, Codex CLI, OpenCode, Hermes, OpenClaw and Pi; Cursor and Cline use manual setup per the integrations docs. source (opens in a new tab)

Sources and review methodology

Official sources and verification dates

Zro homepage homepage · checked Oct 1, 2026
Zro pricing pricing · checked Oct 1, 2026
Zro docs docs · checked Oct 1, 2026
Zro privacy notice policy · checked Oct 1, 2026

Not verified: Supported countries not seen; Team and Enterprise prices; Commercial-use terms.

How we documented and maintain this page

Every fact about Zro (by MoonMath) above comes from the 4 official pages listed here, last compared on Sep 29, 2026; we have not run Zro (by MoonMath) ourselves, so it has no editorial score. How we check and re-check pages.

Article updated Oct 10, 2026; prices checked Sep 29, 2026. Outbound links to vendors are plain links; we do not earn commissions. How we review · Report an error