ccusage vs IsDown in 2026

ccusage and IsDown compared on what each does, what each costs and how each is set up, with Codex Forecast as a third option for Codex limit resets.

By SupaKeeper · 2026-10-10

SupaKeeper is published by LunarWerx, which makes some of the tools compared here.

ccusage analyzes coding agent CLI token usage and costs from local data ^[1]. IsDown offers an Outage Data API with real-time and historical outage data from 6,320+ vendors ^[2]. Codex Forecast estimates the next Codex limit reset and is free ^[3] ^[3].

Option	Own fee	Card fee	Trial or free use
ccusage	not published	not published	MIT licensed, run with npx ^[1] ^[1]
IsDown	Starter $27 per month, $22 annually ^[2]; Pro $49 per month, $40 annually ^[2]	not published	Free 14-day trial, no credit card ^[2]
Codex Forecast	Free, no paid tier ^[3]	not published	No account needed ^[3]

The short answer

ccusage can hide cost columns and JSON cost fields with --no-cost ^[1]. IsDown offers an Outage Data API with real-time and historical outage data from 6,320+ vendors ^[2]. Codex Forecast gives a statistical estimate of when OpenAI will next reset Codex usage limits ^[3].

On needs, ccusage's page covers token usage and costs from local data ^[1]. IsDown's sources cover vendor outage data through an API ^[2]. They also list a Starter plan for individuals ^[2] and a Pro plan for small teams ^[2]. Codex Forecast's claims cover a reset forecast ^[3] and free email alerts when a reset happens ^[3].

What ccusage and IsDown are built for

ccusage's page says it analyzes coding agent CLI token usage and costs from local data ^[1]. It shows cache creation and cache read tokens separately ^[1]. It can run directly without a global installation using npx ^[1]. Token pricing can be overridden per model name in ccusage.json ^[1].

IsDown's pages describe an Outage Data API that provides real-time and historical outage data from 6,320+ vendors ^[2]. The sources given here say little else about what IsDown does, so check its own pages for features.

What Codex Forecast is built for

Codex Forecast is made by the team that publishes this site.

It gives a statistical estimate of when OpenAI will next reset Codex usage limits ^[3]. It combines an account it checks every 60 seconds, OpenAI staff announcements and the OpenAI status page ^[3]. When a measured refill and an announcement disagree, it trusts the measured refill ^[3]. Each reset used in the forecast is listed with a link to where it was announced ^[3]. Its named-day predictions are scored in public, misses included ^[3].

You can opt in to free emails that are sent when a reset actually happens ^[3]. A public API that needs no key gives stats, a reset history you can read page by page, forecasts and operational health ^[3]. The API has a published technical description of how to use it ^[3]. It is an independent tracker and is not affiliated with OpenAI ^[3].

Pricing and fees

ccusage's sources here state no price.

IsDown's Starter plan for individuals costs $27 per month, or $22 per month when paid annually ^[2]. Pro costs $49 per month, or $40 per month annually ^[2]. Premium costs $99 per month, or $80 per month annually ^[2]. Business costs $179 per month, or $150 per month annually ^[2]. MSP costs $200 per month, billed monthly only ^[2]. Paying annually saves about 20% ^[2]. There is a free 14-day trial with no credit card required ^[2]. Education and non-profit customers get 30% off ^[2]. A full refund applies if you cancel within 10 days of subscribing ^[2].

Codex Forecast is free, with no account and no paid tier ^[3].

Setting it up and daily use

ccusage can be run directly without a global installation using npx ^[1]. Daily, you read its reports built from local data ^[1], and --no-cost hides cost columns and JSON cost fields ^[1].

Creating an IsDown account gives an instant 14-day Pro trial ^[2]. The sources here say nothing more about its setup or routine use.

Codex Forecast is a website with a public API. ^[3] The site and API share a snapshot that is cached for up to five minutes ^[3]. Alerts are opt in by email ^[3].

Things to check before you choose

Ask what you need to measure: your own token spend from local data, vendor outages, or when Codex limits reset. ccusage's page speaks of local token usage and costs ^[1], IsDown's of outage data ^[2], and Codex Forecast's claims of reset estimates ^[3].

Check whether ccusage's own pages list your coding agent as a source.

Check cost and trial terms. IsDown's plans start at a listed monthly price ^[2], and its trial needs no card ^[2].

Check how fresh the data must be. Codex Forecast's data is cached for up to five minutes ^[3]. For ccusage and IsDown, check their own pages on data freshness.

How to choose

If you want reports on your own token usage and costs from local data, ccusage's page describes that ^[1].

If you want to hide cost columns in those reports, ccusage lists --no-cost ^[1].

If you want outage data for many vendors through an API, IsDown's page describes that ^[2].

If you want an estimate of the next Codex limit reset, Codex Forecast's claims describe that ^[3].

If you want free emails when a reset happens, Codex Forecast's claims say that ^[3].

If you want a free tool with no account, Codex Forecast is free ^[3].

Frequently asked questions

Is ccusage free?

It can be run directly without a global installation using npx ^[1]. The sources here state no price for it, so the price is not published here. Check its own pages if you need more detail on costs.

How much does IsDown cost?

IsDown's Starter plan costs $27 per month, or $22 per month annually ^[2]. Pro costs $49 per month ^[2]. Premium costs $99 per month ^[2]. Business costs $179 per month ^[2]. MSP costs $200 per month ^[2]. A free 14-day trial needs no credit card ^[2].

Does ccusage work with Codex?

ccusage's page says it analyzes coding agent CLI token usage and costs from local data ^[1]. Check its own pages for whether Codex is a supported source and how it handles limits.

Can a tool predict when Codex limits reset?

Codex Forecast gives a statistical estimate of when OpenAI will next reset Codex usage limits ^[3]. It combines an account it checks every 60 seconds, staff announcements and the OpenAI status page ^[3]. Its named-day predictions are scored in public, misses included ^[3].

Does IsDown have an API?

IsDown's Outage Data API provides real-time and historical outage data from 6,320+ vendors ^[2]. The sources here do not give API pricing or limits, so check IsDown's own pages. Codex Forecast also has a public API that needs no key ^[3].

It is free, with no account and no paid tier. ^[3]

Try Codex Forecast