ChatGPT
Assistant for chat, web search, file analysis and image generation, used in the browser and in desktop and mobile apps; developers can build custom in-chat apps for it via the Apps SDK, built on the Model Context Protocol.
What it does
- Text generation
- Summarization
- Search answers
- Data analysis
- Image generation
How it compares
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Gemini
The two largest consumer AI assistants in the measured market: ChatGPT held 46.4% at May 2026 against Gemini's 27.7% — the share whose rise ended ChatGPT's former majority.
Until January, ChatGPT commanded over 50% market share, but by May's end, it had fallen to 46.4% thanks to the rise of Gemini (27.7%) and Claude (10.3%). Other assistants, including Grok, Perplexity, DeepSeek, and Meta AI, have less than 5% market share.
News reporting · 25 Aug 2026 -
Claude
Both consumer assistants in the same measured market; ChatGPT's 46.4% share is over four times Claude's 10.3%, and Claude's rise is part of what ended ChatGPT's majority.
Until January, ChatGPT commanded over 50% market share, but by May's end, it had fallen to 46.4% thanks to the rise of Gemini (27.7%) and Claude (10.3%). Other assistants, including Grok, Perplexity, DeepSeek, and Meta AI, have less than 5% market share.
News reporting · 25 Aug 2026 -
Grok
Both consumer assistants in one measured market; ChatGPT holds 46.4% while Grok sits under 5% — the leader against a tail challenger rather than a head-to-head.
Until January, ChatGPT commanded over 50% market share, but by May's end, it had fallen to 46.4% thanks to the rise of Gemini (27.7%) and Claude (10.3%). Other assistants, including Grok, Perplexity, DeepSeek, and Meta AI, have less than 5% market share.
News reporting · 25 Aug 2026 -
DeepSeek
Both consumer assistants in one measured market; ChatGPT holds 46.4% while DeepSeek sits under 5% — the incumbent against one of the tail challengers.
Until January, ChatGPT commanded over 50% market share, but by May's end, it had fallen to 46.4% thanks to the rise of Gemini (27.7%) and Claude (10.3%). Other assistants, including Grok, Perplexity, DeepSeek, and Meta AI, have less than 5% market share.
News reporting · 25 Aug 2026 -
Meta AI
Both consumer assistants in one measured market; ChatGPT holds 46.4% while Meta AI sits under 5% — a leader-versus-tail gap in the same market.
Until January, ChatGPT commanded over 50% market share, but by May's end, it had fallen to 46.4% thanks to the rise of Gemini (27.7%) and Claude (10.3%). Other assistants, including Grok, Perplexity, DeepSeek, and Meta AI, have less than 5% market share.
News reporting · 25 Aug 2026 -
Perplexity
Both consumer assistants in one measured market; ChatGPT holds 46.4% while Perplexity sits under 5% — the leader against a challenger in the measured tail.
Until January, ChatGPT commanded over 50% market share, but by May's end, it had fallen to 46.4% thanks to the rise of Gemini (27.7%) and Claude (10.3%). Other assistants, including Grok, Perplexity, DeepSeek, and Meta AI, have less than 5% market share.
News reporting · 25 Aug 2026 -
Higgsfield
Former Snap AI chief launches Higgsfield to take on OpenAI's Sora video generator
News reporting · 19 Sep 2026 -
Pi
Inflection debuts its own foundation AI model to rival Google and OpenAI LLMs
News reporting · 19 Sep 2026 -
Writer
Anthropic, Cohere, and OpenAI's enterprise offering target similar large enterprise customers
Research report · 19 Sep 2026
Sources
- Pricing
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Official documentation · 2 Sep 2026
Verified 2026-09-02: URL 200, name and product unchanged.
- Description
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Official documentation · 13 Sep 2026
openai-apps-sdk retired under Class A (an MCP server/SDK/connector is how you reach a product, not a thing you buy) -- this record predated the 2026-09-06 ruling. The fact survives here rather than being silently dropped, reconciled rather than deleted quietly.
- Constraints
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Derived from this product's security block by scripts/fixes/derive-constraints-met.py; see provenance.security.
- Security
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Certifications, the DPA and every feature cover the business tiers (Business, Enterprise, Edu) only; residency covers new Enterprise and Edu workspaces. Training is opt-out because individual plans train unless 'Improve the model for everyone' is turned off, while business tiers do not (OpenAI help centre). No ChatGPT zero-retention mode was found, and OpenAI's BAA sentence is scoped to the API Platform, so no BAA is recorded.
- Sold within
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OpenAI's own ChatGPT pricing ladder, read in a browser 2026-09-06 (it 403s to an automated request): Free $0, Go $8, Plus $20, Pro from $100 a month. The ladder IS what buys ChatGPT; nothing stands between the buyer and it.
Also from OpenAI
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ChatGPT for Word Application
ChatGPT in a Microsoft Word sidebar: drafts, revises and reorganizes the open document from notes or pasted source text, pulling in context from connected apps like Outlook, SharePoint, Google Workspace and Dropbox.
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ChatGPT for Excel Application
ChatGPT in the Excel ribbon: builds and edits spreadsheets, formulas and formatting from plain-language requests, answers questions about what is in the workbook, and asks permission before changing it. OpenAI's own page bundles this with a separate ChatGPT for Google Sheets add-in; this record covers the Excel add-in only.
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ChatGPT for PowerPoint Application
ChatGPT in the PowerPoint ribbon: creates new slides, rewrites and restructures an existing deck, and turns notes, documents or spreadsheets into presentation-ready content while keeping the output editable in PowerPoint.
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OpenAI API Model API
Hosted API for OpenAI's text, image, audio and embedding models, billed per token.
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ChatGPT Atlas Application
OpenAI's agentic web browser. Deprecated on 9 August 2026, with its browser-based agentic capabilities moved into ChatGPT and Codex.
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ChatGPT Gov Application
A version of ChatGPT that US government agencies deploy in their own Microsoft Azure commercial or Azure Government cloud, so the agency manages its own security, privacy and compliance.
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Codex AI agent
Coding agent that reads, edits and runs a codebase from the terminal, an IDE extension and the ChatGPT web app.
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OpenAI Daybreak Agent platform
OpenAI's cybersecurity offering, bringing together frontier cyber models, Codex Security and partner workflows to find, validate and fix vulnerabilities, with an access-gated Daybreak Red tier for authorised vulnerability research and red teaming.
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OpenAI Frontier Agent platform
Enterprise platform for connecting AI agents to systems of record and running them under enterprise identity, access and observability controls.
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Sora Application
OpenAI's text-to-video product. The web and app experiences were discontinued on 26 April 2026; the API will be discontinued on 24 September 2026.
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