The AI industry in 2026 has produced revenue growth rates without precedent in software history. OpenAI grew from $0 to $3.7 billion in ARR in approximately 24 months. Cursor reached $500 million ARR in under 18 months. Cognition grew from $1 million to $73 million ARR in nine months. These are the fastest-growing companies of all time.
Top AI Companies by Revenue 2026
| # | Company | ARR / Revenue | Growth |
|---|---|---|---|
| 1 | OpenAI | $3.7B ARR | +340% YoY |
| 2 | Cursor (Anysphere) | $500M ARR | $0 → $500M in 18 months |
| 3 | xAI (Grok) | $350M | Launched Nov 2023 |
| 4 | Anthropic | $1B+ ARR | +69% YoY |
| 5 | Midjourney | $300M ARR | 40 employees, bootstrapped |
| 6 | Mistral AI | $50M+ ARR | $6B valuation |
| 7 | ElevenLabs | $100M+ ARR | $3.3B valuation |
| 8 | Perplexity AI | $100M+ ARR | AI search challenger |
| 9 | Cognition | $150M+ ARR | $1M → $73M in 9 months |
| 10 | Hugging Face | $100M+ ARR | $4.5B valuation |
OpenAI — The Fastest Growing Software Company in History
OpenAI grew from $1 billion to $3.7 billion in ARR in a single year — faster than Stripe, Slack, Zoom or any other software product at comparable scale. ChatGPT reached 100 million users in two months, faster than any product in history. Revenue splits approximately between ChatGPT subscriptions (54%), API access (32%) and enterprise contracts (14%). See OpenAI's full profile →
Cursor — $500M ARR in 18 Months
Cursor, the AI code editor built by Anysphere, grew from zero to $500 million ARR in under 18 months — one of the fastest-growing developer tools ever built. xAI has reportedly been in acquisition talks with Anysphere at a $60 billion valuation. See Cursor's full profile →