Multi

OpenAI's conversational AI assistant that sparked the generative AI revolution.

Anthropic's AI assistant known for being helpful, harmless, and honest.

API platform providing access to GPT models for developers to build AI applications.

Rewind shipped a Mac app in 2022 that recorded everything on screen and made it locally searchable, raising $10M from a16z. By late 2023 the team pivoted hard toward a wearable pendant and renamed the company Limitless AI in late 2023. The Rewind Mac app still works for existing users but the brand, website, and product roadmap have all moved to Limitless. New signups land on limitless.ai.

Arc launched in 2022 with a sidebar-tab layout and a cult following. The Browser Company raised $50M to build it, then announced in October 2024 that Arc was too complex for mainstream users and that all new development would shift to a new AI-first browser called Dia. Arc receives security patches only; no new features ship. Dia entered closed beta in 2025 and became the company's primary focus.

Humane launched the AI Pin in November 2023 with $230M+ in funding and pitches from ex-Apple founders. Reviewers panned battery life, latency, and a laser projector that wilted in sunlight. Sales never materialized, returns outpaced new orders, and in February 2025 HP acquired Humane's IP and team for roughly $116M while bricking existing Pins by month's end. The hardware is now a paperweight; the cloud services that powered it were shut off.

Global Illumination was a small NYC studio founded by ex-Instagram and Facebook engineers that built creative tools and a Minecraft-style sandbox game called Biomes. OpenAI announced in August 2023 that it had acquired the company in its first-ever acquisition; the team joined OpenAI to work on core products including ChatGPT. The Biomes code is open-source but the company brand was retired.