Build Independently confirmed 2 publishers 2 min read Published Sep 29, 2026, 10:50 AM PDT Updated Sep 30, 2026, 1:29 AM PDT

Sign in with ChatGPT now counts Amp and Devin agent runs against Plus and Pro plan limits

OpenAI now lets ChatGPT Plus and Pro subscribers spend their plan allowance inside tools from 16 launch partners, including Amp and Devin, via Sign in with ChatGPT. The model cost moves to the subscriber's plan, while tools like Dactyl keep billing credits for builds and assets.

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Illustration accompanying Sign in with ChatGPT now counts Amp and Devin agent runs against Plus and Pro plan limits — Generated illustration

What happened

Sign in with ChatGPT began as a July beta for logging in, giving partners a user's name, email address and profile picture, with plugin permissions approved separately.
Subscribers can set a weekly cap for each app, and once a limit is reached, included usage stops instead of switching automatically to the partner's own billing.
Fifteen of the 16 launch partners, including OpenCode, Warp, Kilo Code and Conductor, are live now, with Lovable listed as coming soon.
Before OpenAI's announcement, Dactyl limited plan sharing to personal Pro subscribers, so Plus and Business users got only the login and kept spending Dactyl credits.
OpenClaw let users run OpenAI agent turns on a ChatGPT subscription in May, using a Codex auth profile created by signing in from its command line.

Why it matters

What it costs cost Model spend for partner agents lands on whoever holds the ChatGPT subscription, and it comes out of the same Codex allowance that person uses for their own work.
What it limits constraint A tool that hits its weekly cap loses included usage outright, so anyone depending on it for daily agent runs needs a paid route they have set up in advance.
Who has to decide decision Companies budgeting tool seats cannot yet plan on routing model usage through company ChatGPT plans, because the coverage OpenAI announced covers Plus and Pro subscribers.

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Confirmed2 publishers

Partner requests are metered against the ChatGPT Work and Codex usage already included in the subscriber's plan ^[8]. One allowance now pays for two kinds of work ^[8]. A long Amp or Devin session spends the same budget the subscriber would otherwise use in Codex directly ^[8]. Only usage OpenAI calls "eligible" counts against those limits, and each partner's consumption can be capped ^[2].

I think the hard stop at the cap is the right default for a paid subscription ^[10]. The person paying sees the failure: the tool stops drawing on the plan, and nothing switches to the vendor's own billing automatically ^[10]. Each partner then has to decide what its product does for a user whose included usage has run out ^[10].

Dactyl, the native mobile app builder Ryan Dahl debuted in late August ^[14], shows where the model bill ends. Its $20-a-month Builder plan promises "no token bills from us" ^[11]. The wording is precise, and I mean that as praise for whoever wrote it: tokens are the one line item it removes ^[11]^[12]. According to Dactyl's documentation, the ChatGPT connection covers the agent that interprets a request and writes the Swift code ^[12]. Compiling the app, generating icons and images, creating 3D assets and publishing still consume Dactyl credits ^[12]. Users do not supply an OpenAI API key. Authentication runs through their normal ChatGPT account ^[13].

For a team, the budget change is smaller than "no token bills" suggests. Moving model spend for tools like these off a company API account would need two things to be true. First, the company's own ChatGPT plan would have to qualify. OpenAI's announcement extends plan usage to Plus and Pro subscribers ^[9], and The New Stack's report does not say Business plans are included. Second, the Codex usage in each plan would have to cover a week of agent runs across every tool drawing on it ^[8]. That depends on the team's workload. Tool seats stay in the budget either way, because Dactyl-style tools still bill for non-model work ^[12].

OpenAI announced the program Tuesday at DevDay, its fourth annual developer conference ^[3]. "We're starting with these 16 launch partners today, and we'll expand quickly," the company said in a statement ^[7].

What to watch

Whether OpenAI extends plan usage to ChatGPT Business, which decides whether companies can move tool model spend onto ChatGPT seats.
How OpenAI defines 'eligible' usage, and whether per-app weekly caps become something an administrator can set.
Lovable going live, and which partners OpenAI adds after its first 16.

Clarity's read

What the record supports and how the coverage leans. The claims behind it follow.

Reality

Evidence62
Adoption38
Hype gap+12
Incentives64
Confidence68

Why these scores

Claim ledger

Ranked by verification strength, evidence, and original report placement.

[1]
OpenAI is making it easier for ChatGPT subscribers to use their allowance inside third-party AI and coding platforms such as Amp, Devin, Lovable and OpenClaw, alongside platforms including Notion and Vercel.
Reported Supported Source: The New Stack report on OpenAI DevDay announcementView cited source
[2]
ChatGPT Plus and Pro subscribers can use their existing plan allowance inside participating third-party tools; 'eligible' OpenAI usage in those services counts against the user's existing ChatGPT plan limits, with controls for how much each partner can consume.
Reported Supported Source: The New Stack, describing OpenAI's announcementView cited source
[3]
The announcement came on Tuesday at OpenAI DevDay, the fourth incarnation of OpenAI's annual developer conference.
Reported Supported Source: The New StackView cited source
[4]
In July OpenAI released Sign in with ChatGPT as a beta feature with partners including Airtable, GitLab, HubSpot, Notion, Supabase and Vercel; at that point the feature was chiefly about identity.
Reported Supported Source: The New StackView cited source
[5]
Under the July beta, OpenAI said partners received a user's name, email address and profile picture, while any additional plugin permissions had to be approved separately.
Reported Supported Source: OpenAI, as reported by The New StackView cited source
[6]
OpenAI named 16 launch partners for ChatGPT plan usage: OpenCode, OpenClaw, Pi, T3, Hyperagent, Hermes Agent, Vorflux, Amp, Dactyl, Kilo Code, Warp, Conductor, Devin, Notion and Vercel are available, with Lovable coming soon.
Reported Supported Source: The New StackView cited source
[7]
"We're starting with these 16 launch partners today, and we'll expand quickly."
Reported Supported Source: OpenAI statement to The New StackView cited source
[8]
OpenAI says third-party requests draw from the ChatGPT Work and Codex usage already included in a subscriber's plan.
Reported Supported Source: OpenAI, as reported by The New StackView cited source
[9]
OpenAI's official announcement broadens plan usage to both Plus and Pro subscribers.
Reported Supported Source: The New StackView cited source
[10]
Users can set weekly caps for individual apps, and once the relevant limit is reached, included usage stops rather than automatically switching to the third party's own billing.
Reported Supported Source: OpenAI, as reported by The New StackView cited source
[11]
Dactyl offers a free plan with 100 credits a month, and its $20-a-month Builder plan promises "no token bills from us" because the agent runs on the user's ChatGPT subscription.
Reported Supported Source: Dactyl pricing, as reported by The New StackView cited source
[12]
According to Dactyl's documentation, connecting ChatGPT covers the agent that interprets a user's request and writes the Swift code; compiling the app, generating icons and images, creating 3D assets and publishing continue to consume Dactyl credits.
Reported Supported Source: Dactyl documentation, as reported by The New StackView cited source
[13]
Dactyl users do not need to supply an OpenAI API key; authentication happens through their normal ChatGPT account.
Reported Supported Source: Dactyl documentation, as reported by The New StackView cited source
[14]
Ryan Dahl, a software engineer known for Node.js, debuted Dactyl, a vibe-coding platform for building native mobile apps, on X in late August and highlighted the option to bring an existing ChatGPT subscription into it.
Reported Supported Source: The New StackView cited source
[15]
At its launch, Dactyl limited plan sharing to personal ChatGPT Pro subscribers on its Builder plan or higher; Plus and Business users could sign in with ChatGPT but got only the account connection, and their builds consumed Dactyl credits.
Reported Supported Source: Dactyl, as reported by The New StackView cited source
[16]
In May, OpenClaw let users power OpenAI agent turns with an existing ChatGPT subscription through OpenAI's Codex authentication route: users signed into their ChatGPT/Codex account from the OpenClaw command line, creating what OpenClaw called a "subscription-backed Codex auth profile."
Reported Supported Source: OpenClaw, as reported by The New StackView cited source
[17]
Fifteen of the 16 named launch partners are available now; Lovable is listed as coming soon.
Derived Supported

Sources

2 independent publishers whose own reporting we read for this story.

runtimewire.com
1 article · September 29, 2026
OpenAI launches 'Login with ChatGPT' and routes plan usage into third-party AI apps
thenewstack.io
2 articles · September 29, 2026
OpenAI makes ‘Sign in with ChatGPT’ a way to use your subscription in third-party coding tools

Clarity analysis

How the coverage leans and what the record actually supports. Read the methodology

Perspective Coverage

How much of the coverage speaks to builders, operators and investors. It measures emphasis, not whether the story is right.

Builder

For developers of agent tools, the change moves model cost off their books and onto the subscriber's plan. Altman pitched it that way at DevDay: "now you don't have to cover their token costs to get them going." RuntimeWire lists the constraints a builder meets first. Open-source tools use an OAuth permission on eligible Responses API requests, commercial tools go through an interest form, and the preview excludes image generation, file search, Code Interpreter, native computer use and hosted connectors.

Operator

For a paying subscriber, every connected tool draws on one weekly allowance. RuntimeWire notes that an app can hit its own cap while plan usage remains, that the usage page shows no action-level detail, and that automatic credit purchases can produce charges once included usage is spent. Partners can still bill for their own work, as Dactyl does for builds and assets.

Investor

RuntimeWire reads the product as OpenAI turning ChatGPT plan capacity into a distribution and billing channel for outside software, with OpenAI deciding which integrations qualify. The outlet flags that reading as its own inference. Neither publisher reports subscriber, usage or revenue figures that would size it.

Reality

Evidence, adoption, hype gap, incentives and confidence, each read independently from the current record on the scale shown beneath it. How these are measured.

Evidence62: 0100
OpenAI's own documents
Nearly every mechanic here comes from OpenAI: the DevDay announcement, a spokesperson's statement to The New Stack, and the Help Center page RuntimeWire cites as its primary source. The two publishers agree on the partner list and the per-app caps. The Dactyl and OpenClaw history rests on those companies' own documentation, as The New Stack relays it.
Adoption38: 0100
Live integrations, no usage figures
Fifteen integrations are live on day one, and two predate the announcement: OpenClaw since May and Dactyl since late August. Neither publisher reports how many subscribers have connected a tool or how much allowance flows through them.
Hype gap+12: −100 understated0 aligned+100 overstated
Slightly generous framing
The headline claim matches OpenAI's documentation. RuntimeWire's reading of the developer docs narrows it: the preview excludes image generation, file search, Code Interpreter, native computer use and hosted connectors, and OpenAI picks the commercial partners. Dactyl still bills credits for compiling and assets. "Use your subscription" is accurate for model calls and a little broad for everything else a tool does.
Incentives64: 0100
Framing from the sellers
The parties with most to gain supply most of the framing. Altman sold it to developers as a cost transfer, and Dactyl markets its Builder plan with "no token bills from us." RuntimeWire's distribution reading of OpenAI's motive is labelled as the outlet's inference.
Confidence68: 0100
Firm on mechanics, softer on overage
The facts a subscriber needs (who is eligible, where usage is drawn from, how caps work) are confirmed by OpenAI's Help Center through RuntimeWire and by OpenAI's statement through The New Stack. The accounts diverge on what happens after the allowance runs out. The New Stack says usage stops, and RuntimeWire says ChatGPT credits can take over if the user enabled them.

Topics and entities

Topics

Delegated sign-in and authorization
AI Subscription Pricing
AI Coding Agents