Google AI Studio (Gemini API)
Flash, Flash-Lite, and Embedding models are free to call long-term, rate-limited per model (community testing puts Flash at roughly 15 RPM and around 1,500 requests/day; check your account dashboard for exact figures)
The official rate-limit page does not publish exact figures statically; log in to aistudio.google.com/rate-limit to see your account's actual quota. As of 2026-04-01, the Gemini Pro line (2.5 Pro / 3 Pro / 3.1 Pro) has been removed from the free tier and is paid-only; Google has also imposed stricter daily quotas and a mandatory prepaid-account system for the free tier.
By default, prompts and outputs from free-tier calls may be used to improve Google products; upgrade to the paid tier if you need data not retained. Pro models are no longer included in the free tier.