Twitter shut off the free API and replaced it with $100/mo Basic and $42k/mo Enterprise tiers

Elon-era Twitter ended free API access for v1.1 and v2 endpoints. The replacement: a $100/mo Basic tier with hard rate caps (1,500 tweets/mo write, 10k reads), a $5,000/mo Pro tier, and a $42,000/mo Enterprise tier. Most third-party clients died within weeks - Twitterrific shut down formally on 18 January 2023 once Twitter blocked their API access, and Tweetbot went the same way. For founders building on the platform, the $100 tier was unworkable for any real product. Buffer, Hootsuite, and other social-media tools either ate the cost or quietly pulled deep Twitter features. The lesson founders kept citing afterwards: any product whose growth loop depends on a single platform's API is one CEO away from being gutted.