---
title: "OpenAI's $20 ChatGPT login is now the meter for Devin and 15 other developer tools"
description: "At DevDay on September 29, OpenAI shipped Sign in with ChatGPT: the OpenAI calls Devin makes for a subscriber now draw down that user's ChatGPT quota, with no separate API bill. Cognition raised $2 billion at $48 billion in September and keeps its product; OpenAI, whose Codex agent rivals Devin, owns the quota."
publisher: "The Inference"
section: "Platforms"
published: 2026-10-10T17:17:38.781Z
modified: 2026-10-10T17:17:38.781Z
canonical: https://theinference.org/article/openai-s-20-chatgpt-login-is-now-the-meter-for-devin-and-15-other-developer-tools
language: en
keywords: "OpenAI, Cognition, Devin, Coding Agents, Developer Tools"
---

# OpenAI's $20 ChatGPT login is now the meter for Devin and 15 other developer tools

> At DevDay on September 29, OpenAI shipped Sign in with ChatGPT: the OpenAI calls Devin makes for a subscriber now draw down that user's ChatGPT quota, with no separate API bill. Cognition raised $2 billion at $48 billion in September and keeps its product; OpenAI, whose Codex agent rivals Devin, owns the quota.

## One login, 16 tools, no second invoice

At DevDay on September 29, [OpenAI](https://theinference.org/markets/companies/openai) shipped Sign in with ChatGPT, and a $20 ChatGPT plan started paying for another company's product [1]. Sign into Devin, [Cognition](https://theinference.org/markets/companies/cognition)'s coding agent, and the OpenAI calls it makes draw down the ChatGPT Work and Codex quota in that plan: no API key, no second invoice [1][2]. Devin is [one of 16 launch partners](https://decrypt.co/379584/openai-ai-agents-computers-devday-2026-everything-announced), [Notion](https://theinference.org/markets/companies/notion), Vercel and [Lovable](https://theinference.org/markets/companies/lovable) among them [1][3].

## Two marks in one month, nearly ten times apart

Cognition [closed more than $2 billion at $48 billion](https://techcrunch.com/2026/09/08/cognition-hits-48b-valuation-signaling-investors-believe-ai-coding-is-far-from-a-winner-take-all-market/) on September 8, four months after a $26 billion round, on run-rate revenue the company says rose from $492 million to almost $900 million [4]. Factory, the nearest challenger, [raised $200 million at a $5 billion valuation](https://www.msn.com/en-ca/news/other/ai-coding-agent-startup-factory-triples-valuation-to-5-billion-in-latest-funding-round/ar-AA2chANb) on September 15, tripling its April mark [5].

## Codex's owner holds Devin's meter

OpenAI's own Codex agent, Devin's direct rival, took DevDay upgrades the same morning the rail went live [3]; a ChatGPT login is now the billing surface for Devin's OpenAI usage, even as Cognition trains its own models to cut reliance on OpenAI and [Anthropic](https://theinference.org/markets/companies/anthropic) [4]. For an IPO-bound OpenAI, subscription-billed work is stickier than API keys [3]. [What, if anything, changes hands between the companies is not disclosed](https://theinference.org/article/adobe-licenses-can-now-be-bought-with-openai-budget-at-a-toll-nobody-discloses); the only detailed write-up reports no fee [6].

## A platform multiple on falling prices

The integration spans paid tiers only, Pro $20, Max $200, Teams $80 plus $40 a seat, with weekly user-set caps, across Cloud, Desktop and CLI [6]. The same month, SWE-2 [shipped 81% cheaper per task than its predecessor by Cognition's own numbers](https://www.msn.com/en-us/news/other/cognition-swe-2-beats-frontier-coding-ai-at-64-lower-cost-using-single-run-rl-training/ar-AA2c1rNp), and 64% cheaper than Anthropic's Fable 5.1 within a benchmark point [7]; the write-up counts cuts up to 70% [6]. Cursor carried $50 billion on $2 billion-plus revenue before [SpaceX](https://theinference.org/markets/companies/spacex) paid $60 billion; Cognition's multiple is now higher [4].

*Chart: **The login meter runs from $20 to $200 a month** Bar chart of monthly ChatGPT plan prices that can now pay for third-party tools: Pro $20, Teams $80, Max $200.*

*Monthly prices of the ChatGPT plans that can pay for Devin and the other launch partners under Sign in with ChatGPT, across Cloud, Desktop and CLI; Teams is $80 plus $40 a seat, with weekly user-set caps. Source: Startup Fortune. [6]*

*Chart: **Cognition's $48 billion mark sits between a $60 billion exit and a $5 billion challenger** Column chart of 2026 coding-agent valuations: Cursor $60B (sold to SpaceX), Cognition $48B (Series E), Factory $5B.*

*Valuation marks for autonomous-coding startups, billions of US dollars, 2026. Cursor is SpaceX's April acquisition price; Cognition is its September 8 Series E mark; Factory is its September 15 round, triple its April valuation. Sources: TechCrunch; Reuters. [4][5]*

## The bull case, and the knife fight

Altman's pitch was plain: "They're already paying for an AI subscription, and now you don't have to cover their token costs to get them going" [3]. Factory's chief says he fired an adviser who took Cognition's revenue job over breached confidentiality; the adviser and Cognition deny it [8][9]. Vinod Khosla, an investor in both, called Factory a "struggling second tier competitor", and Sequoia's Shaun Maguire answered that Factory is "sitting on a nuclear weapon to end them" [8].

## Watch the quota, then the racks

Quota-drawn or API-billed, the tokens burn rented silicon. Cognition is [the first customer in production on Nvidia's Vera Rubin NVL72 racks at CoreWeave](https://www.marketscreener.com/news/coreweave-delivers-nvidia-vera-rubin-nvl72-performance-at-production-scale-starting-with-cognition-ce785ad2d18ff421), measuring 4.8 times the token throughput on SWE-2 inference [10]; the listed read-through is [CoreWeave](https://theinference.org/markets/companies/coreweave), Nasdaq: CRWV, and [Nvidia](https://theinference.org/markets/companies/nvidia). Watch two readings: Cognition's next run-rate print, and whether the 16 partners stay free to run on Anthropic's or Google's models. The agents stay independent. The meter does not.

## Takeaway

OpenAI turned a $20 ChatGPT subscription into the billing rail for Devin and 15 other tools, with nothing disclosed about what changes hands and its own Codex agent on the same track. Cognition's $48 billion mark now carries a richer multiple than Cursor's, so watch the next run-rate print and whether partners keep their model freedom.

## Sources

1. [Decrypt, "OpenAI Gave AI Agents Their Own Computers at DevDay 2026. Here's Everything It Announced", 29 September 2026](https://decrypt.co/379584/openai-ai-agents-computers-devday-2026-everything-announced)
2. [Notebookcheck, "ChatGPT Plus in other apps: signing out does not stop the usage", 30 September 2026](https://www.notebookcheck.net/ChatGPT-Plus-in-other-apps-signing-out-does-not-stop-the-usage.1411949.0.html)
3. [Moneycontrol, "OpenAI DevDay 2026: Dots always-on AI agents; GPT-6.1 Sol; ChatGPT subscriptions in 3rd party tools", 30 September 2026](https://www.moneycontrol.com/artificial-intelligence/openai-devday-2026-dots-always-on-ai-agents-gpt-6-1-sol-chatgpt-subscriptions-in-3rd-party-tools-article-14041450.html)
4. [TechCrunch, "Cognition hits $48B valuation, signaling investors believe AI coding is far from a winner-take-all market", 8 September 2026](https://techcrunch.com/2026/09/08/cognition-hits-48b-valuation-signaling-investors-believe-ai-coding-is-far-from-a-winner-take-all-market/)
5. [Reuters, "AI coding agent startup Factory triples valuation to $5 billion in latest funding round", 15 September 2026](https://www.msn.com/en-ca/news/other/ai-coding-agent-startup-factory-triples-valuation-to-5-billion-in-latest-funding-round/ar-AA2chANb)
6. [Startup Fortune, "OpenAI Lets ChatGPT Subscribers Pay for Devin Usage With Their Existing Plan", 10 October 2026](https://startupfortune.com/openai-lets-chatgpt-subscribers-pay-for-devin-usage-with-their-existing-plan/)
7. [Tech Times, "Cognition SWE-2 beats Frontier Coding AI at 64% lower cost using single-run RL training", 11 September 2026](https://www.msn.com/en-us/news/other/cognition-swe-2-beats-frontier-coding-ai-at-64-lower-cost-using-single-run-rl-training/ar-AA2c1rNp)
8. [The Next Web, "Factory and Cognition bosses clash over adviser's exit, Bloomberg reports", 1 October 2026](https://thenextweb.com/news/factory-cognition-ceos-feud-degnan)
9. [Grit Daily, "VC Board Adviser Dispute Follows Factory's Cognition Move", 9 October 2026](https://gritdaily.com/vc-board-adviser-factory-cognition-dispute/)
10. [CoreWeave via MarketScreener, "CoreWeave Delivers NVIDIA Vera Rubin NVL72 Performance at Production Scale, Starting With Cognition", 30 September 2026](https://www.marketscreener.com/news/coreweave-delivers-nvidia-vera-rubin-nvl72-performance-at-production-scale-starting-with-cognition-ce785ad2d18ff421)


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OpenAI's $20 ChatGPT login is now the meter for Devin and 15 other developer tools — The Inference. Canonical: https://theinference.org/article/openai-s-20-chatgpt-login-is-now-the-meter-for-devin-and-15-other-developer-tools