Dots, Muse and Grok Bot all shipped within seven weeks

OpenAI unveiled Dots at DevDay on September 29 — always-on agents that keep working in the background. Meta launched Muse inside WhatsApp on the Muse Spark model with a free tier of about 100 million tokens a week. xAI's Grok Bot has been in public beta since August 11, supporting up to 50 named bots.

• Dots requires ChatGPT Pro, starting at $100 a month
• Muse's free tier offers about 100M tokens per week
• Grok Bot ships with Cursor Pro, tiers up to $120 per seat
• Muse and Grok Bot rely on persona and memory files