Independent notes · 27 Sep 2026
Crixet, ChatGPT ads, and whether OpenAI is down
Prism replaced the Crixet editor. Ads are a real buy in Ads Manager. Outages are on status.openai.com. Plus is $20 a month.
- Plus
- $20/mo
- Pro $200
- New sign-ups paused 10 Sep 2026
- Dev Day
- 29 Sep 2026, Fort Mason
- Sora
- App and API closed
- Crixet
- Now Prism
Index
Names people mix up
- 01Crixet is now Prism
Crixet was a cloud LaTeX editor. OpenAI acquired it and turned the product into Prism, a free science workspace at prism.openai.com.
- 02OpenAI Prism
Prism is OpenAI’s AI workspace for scientific writing, built on the Crixet editor. It uses a ChatGPT account at prism.openai.com.
- 03CGAT opens ChatGPT
CGAT is not a product. openai.com/chat is the short path into ChatGPT. The assistant itself opens at chatgpt.com.
- 04Dale chat is DALL·E
Dale chat is a misspelling of DALL·E. Image generation in ChatGPT now runs through ChatGPT Images, including the 2.0 release.
- 05What is SchoolAI?
SchoolAI is a classroom AI product for teachers, separate from ChatGPT. The logo is on schoolai.com, not a file this site hosts.
- 06ChatGPT logo
The ChatGPT logo is the OpenAI blossom. Official files and usage rules are on openai.com/brand. This page shows the mark and where to get it.
Status and account
- 01Why ChatGPT is not working
When ChatGPT will not load, check status.openai.com first, then the account, the app version, and the usage cap. This site cannot reset a session.
- 02OpenAI account
An OpenAI account is two logins: chatgpt.com for the assistant, and platform.openai.com for API keys. This site cannot sign you in.
- 03ChatGPT customer service
ChatGPT support is the help center at help.openai.com, opened while you are signed in. This inbox cannot see your subscription or reset a password.
- 04ChatGPT for customer service
How support teams use ChatGPT to draft replies, and where an agent or a workspace policy fits. This is not the OpenAI help desk.
Plans and billing
- 01How much is ChatGPT?
ChatGPT Plus is $20 a month. Pro is listed at $100 and $200, with new $200 sign-ups paused. API usage is a separate bill.
- 02How to cancel a ChatGPT subscription
Cancel ChatGPT Plus or Pro in Settings, Billing, on the store that charged you. Cancel at least 24 hours before renewal. Canceling is not a refund.
- 03ChatGPT Plus for students
OpenAI offered ChatGPT Plus free for college students in the US and Canada through May. Check the help article before you rely on a new term.
- 04ChatGPT Plus free trial
ChatGPT Plus free trials are invite promos. They are not the $20 plan and not the college offer. The rules are in OpenAI’s trial FAQ.
- 05OpenAI billing
OpenAI billing splits in two: ChatGPT plan receipts in the app, and API spend on the platform organization overview.
- 06ChatGPT ads
ChatGPT ads are a paid placement inside ChatGPT, bought in Ads Manager. Answers stay separate from the ad, and chats are not sold to advertisers.
Models and media
- 01GPT-6 and GPT-5.6
People search GPT-6 and land on OpenAI’s GPT-5.6 post. GPT-5.6 ships as Luna, Terra, and Sol. There is no separate GPT-6 product page.
- 02ChatGPT 5.4
ChatGPT 5.4 and 5.4 mini left the signed-in ChatGPT app on 31 August 2026. Both remain on the API and on Codex sessions that use an API key.
- 03ChatGPT 5.1
ChatGPT 5.1 is an earlier ChatGPT model release. Newer pickers default to later 5.x models, including GPT-5.6.
- 04ChatGPT Images 2.0
ChatGPT Images 2.0 is the image generator inside ChatGPT. You can also upload a photo and ask for an edit, within the content rules.
- 05Sora 2 price and shutdown
Sora’s app closed on 26 April 2026. The API closed on 24 September 2026. There is no Sora 3. Listed API rates were per second of video.
- 06ChatGPT for writing
Use ChatGPT to draft and revise prose. Canvas is the side-by-side editor. Prism is the separate workspace for scientific papers.
- 07ChatGPT Canvas
ChatGPT Canvas is the side panel for editing a document or a code file while the chat stays open. It is part of ChatGPT, not a separate subscription.
- 08Deep research
Deep research is ChatGPT’s multi-step web report. Deepsearch is the same query. It cites pages, and you still have to open them.
- 09ChatGPT Pulse
ChatGPT Pulse is a proactive briefing from your chats and connected context. It is not a push for every message, and it is not ChatGPT Wrapped.
- 10ChatGPT Wrapped
ChatGPT Wrapped is OpenAI’s year-in-review recap. It shows up when they run the campaign. It is not a monthly report and not Spotify.
- 11Sensitive content in ChatGPT
ChatGPT has no Adult mode switch. Reduce sensitive content, under Settings and Safety, adds limits. Teens have it on by default.
Codex and the API
- 01Codex status and usage
Check Codex uptime on status.openai.com, plan limits at chatgpt.com/codex/settings/usage, and the CLI with /status. API spend is a different page.
- 02Codex on iOS
Codex on iPhone is the Remote view in the ChatGPT app. It drives a Mac or Windows machine that is already signed in. The files stay on that computer.
- 03Automatic review
Codex automatic review swaps the human approval at the sandbox boundary for a reviewer agent. It does not widen what the sandbox allows.
- 04OpenAI Symphony
Symphony is OpenAI’s open-source orchestrator for Codex, tied to Linear. It runs tasks and can expose a local status dashboard.
- 05OpenAI Agent Builder
Agent Builder is the visual canvas in the OpenAI API docs for composing agents, tools, and handoffs. It is not the ChatGPT Agent button.
- 06ChatGPT Agent
ChatGPT Agent works a task inside ChatGPT: it can browse and use tools, then come back with a result. It is not Agent Builder and not a Sponsored Agent.
- 07OpenAI API and API keys
Create an OpenAI API key at platform.openai.com. Usage is billed apart from ChatGPT Plus. new-api is a separate open-source gateway, not the official API.
- 08Token counter
Estimate an OpenAI token count at about four English characters per token, then confirm on platform.openai.com/tokenizer before you budget a prompt.
- 09GPT Realtime
GPT Realtime is OpenAI’s low-latency speech model on the API. It is billed as API usage, not as a ChatGPT Plus add-on.
- 10OpenAI chatbot
An OpenAI chatbot is a chat completion loop plus your instructions. Start on the API, keep the key on a server, and add tools only when a reply is not enough.
- 11Python programming with AI
Use ChatGPT to learn Python by pasting the error and the few lines around it. Run the result locally. Do not paste secrets into the prompt.
- 12Comment prompt
A comment in a coding prompt is a note the model still reads. In Python, # lines are for you and for the model, not a hidden channel.
- 13Creaticode
Creaticode is a Scratch plugin that connects block coding to ChatGPT. It is a community project, not a model inside ChatGPT.
Work and study
- 01OpenAI careers
OpenAI jobs are posted at openai.com/careers. ChatGPT careers are the same list. Applications go through that board, not through ChatGPT.
- 02Forward deployed engineer
A forward deployed engineer ships OpenAI products inside a customer’s environment. OpenAI posts the role, including San Francisco, on its careers site.
- 03OpenAI internships
OpenAI internships are listed under Emerging Talent on the careers site. Intern, internship, and internships are the same board.
- 04OpenAI Residency
The OpenAI Residency is a research program with its own application at openai.com/residency. It is not the internship board and not a ChatGPT feature.
- 05OpenAI Academy
OpenAI Academy is the free course library at openai.com/academy, with tracks for writing and workspace agents. It is not a university.
- 06Workplace agents
OpenAI’s workspace-agents lesson is the Academy track for using agents at work. A workplace agent runs in a ChatGPT workspace, under an admin’s rules.
- 07OpenAI Frontier
OpenAI Frontier is the enterprise platform for running agents across a company. It is not a ChatGPT Plus feature and not a model name.
- 08OpenAI Dev Day 2026
OpenAI Dev Day 2026 is 29 September at Fort Mason in San Francisco. In-person applications are closed. The keynote livestream is free. Registration was $650.
- 09AI and compute
AI and Compute is OpenAI’s 2018 essay on how fast training compute grew. The doubling claim is about that era’s largest runs, not a live price.
Questions
What happened to Crixet?
OpenAI acquired the LaTeX editor and shipped it as Prism. Open prism.openai.com with a ChatGPT account.
How much is ChatGPT Plus?
Plus is $20 a month. API usage is billed separately on platform.openai.com.
Why is ChatGPT not working?
Check status.openai.com first. If that page is green, update the app, try another browser, and confirm you are on the account that holds the plan.
Is this the OpenAI login?
No. Sign in only on chatgpt.com or platform.openai.com. OpenAI Notes is an independent guide.