OpenAI
✓ OfficialCreator of the GPT model family and ChatGPT.
At a glance
History
OpenAI was founded in December 2015 as a non-profit AI research laboratory by Sam Altman, Elon Musk, Greg Brockman, Ilya Sutskever, and others, with an initial pledge of US$1 billion in funding. Its stated mission is to "ensure that artificial general intelligence benefits all of humanity."
In 2019, OpenAI transitioned to a "capped-profit" structure under OpenAI LP, allowing it to attract significant investment. Microsoft invested US$1 billion that year, followed by an additional US$10 billion commitment in 2023.
Notable releases
- GPT-2 (2019) — initially withheld over misuse concerns; later released in full
- GPT-3 (2020) — 175B parameters; powered the first generation of language-model apps
- DALL·E (2021) — text-to-image generation
- ChatGPT (Nov 2022) — free conversational interface that reached 100 million users in two months, the fastest-growing consumer app in history
- GPT-4 (Mar 2023) — multimodal (text+image input)
- GPT-4o (May 2024) — natively multimodal (text, audio, vision)
- o-series (2024–) — reasoning models with chain-of-thought
- GPT-5 (2025) — frontier multimodal generalist model
- Sora (2024) — text-to-video generation
Governance crisis
In November 2023, the board of directors briefly removed Sam Altman as CEO, citing communication concerns. Following an employee revolt and pressure from Microsoft, Altman was reinstated within a week, and the board was restructured.
Business model
OpenAI provides API access to its models, charges per million tokens, and offers a consumer subscription (ChatGPT Plus/Pro/Enterprise). It partners closely with Microsoft, whose Azure platform hosts all OpenAI workloads.
Latest news from OpenAI
8 most recent · auto-synced from RSSWorkspace agents
Learn how to build, use, and scale workspace agents in ChatGPT to automate repeatable workflows, connect tools, and streamline team operations.
Introducing workspace agents in ChatGPT
Workspace agents in ChatGPT are Codex-powered agents that automate complex workflows, run in the cloud, and help teams scale work across tools securely.
Speeding up agentic workflows with WebSockets in the Responses API
A deep dive into the Codex agent loop, showing how WebSockets and connection-scoped caching reduced API overhead and improved model latency.
Latest activity
Full history →- 0
OpenAI: GPT-5.4 Image 2 released
OpenAI: GPT-5.4 Image 2 discovered via OpenRouter. Provider: OpenAI.
OpenAI: GPT-5.4 Image 2 - 0
OpenAI: GPT-3.5 Turbo released
OpenAI: GPT-3.5 Turbo discovered via OpenRouter. Provider: OpenAI.
GPT-3.5 Turbo - 0
Releases timeline
Showing 12 most recent- OpenAI: GPT-5.4 Image 2
[GPT-5.4](https://openrouter.ai/openai/gpt-5.4) Image 2 combines OpenAI's GPT-5.4 model with state-of-the-art image generation capabilities from GPT Image 2. It enables rich multimodal workflows, allowing users to seamlessly move between reasoning, coding, and...
- GPT-5.4 Pro
GPT-5.4 Pro is OpenAI's most advanced model, building on GPT-5.4's unified architecture with enhanced reasoning capabilities for complex, high-stakes tasks. It features a 1M+ token context window (922K input, 128K...
- GPT-5.3 Chat
GPT-5.3 Chat is an update to ChatGPT's most-used model that makes everyday conversations smoother, more useful, and more directly helpful. It delivers more accurate answers with better contextualization and significantly...
- GPT-5.3-Codex
GPT-5.3-Codex is OpenAI’s most advanced agentic coding model, combining the frontier software engineering performance of GPT-5.2-Codex with the broader reasoning and professional knowledge capabilities of GPT-5.2. It achieves state-of-the-art results...
Active models
- OpenAI: GPT-5.4 Image 2Active
[GPT-5.4](https://openrouter.ai/openai/gpt-5.4) Image 2 combines OpenAI's GPT-5.4 model with state-of-the-art image generation capabilities from GPT Image 2. It enables rich multimodal workflows, allowing users to seamlessly move between reasoning, coding, and...
272K ctx - GPT-5.4 ProActive
GPT-5.4 Pro is OpenAI's most advanced model, building on GPT-5.4's unified architecture with enhanced reasoning capabilities for complex, high-stakes tasks. It features a 1M+ token context window (922K input, 128K...
1.1M ctx - GPT-5.3 ChatActive
GPT-5.3 Chat is an update to ChatGPT's most-used model that makes everyday conversations smoother, more useful, and more directly helpful. It delivers more accurate answers with better contextualization and significantly...
Older & deprecated (2)
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