🔌 LLM APIs with free tier · no card · live — last verified by a probe on 2026-09-17 · aistudio.google.com · back to the whole list
Free tier on the Gemini API, priced model by model rather than as one account quota
gemini-3.8-flash, gemini-3.7-flash, gemini-3.5-flash-lite, gemini-2.5-pro
Google prices the free tier per model: its pricing page reads “Free of charge” for input, output and context caching on Gemini 3.8 Flash — the newest of them, “our most intelligent Flash model, engineered for long-horizon software engineering”, free in the same column that prices it at $0.75/$3.75 per 1M on the paid tier (read 2026-09-08) — and on 3.7 Flash, 3.6 Flash, 3.5 Flash, 3.5 Flash-Lite, 3.1 Flash-Lite, 3 Flash Preview, 2.5 Pro and 2.5 Flash, with “Not available” in the same column for Gemini 3.1 Pro Preview, Omni Flash Preview and the Live previews. A new generation arrives here as an addition: every Flash before it kept its free column when 3.8 landed. What the free tier costs instead is one row lower in each table: “Used to improve our products” is Yes on the free tier and No on the paid one. The per-model RPM/TPM/RPD figures are no longer published anywhere a probe can read — the rate-limits page keeps only the usage-tier table, whose free row reads “Active project or free trial”, and sends you to aistudio.google.com/rate-limit, which needs a sign-in (read 2026-08-14)
https://generativelanguage.googleapis.com/v1beta/openai/GOOGLE_AI_STUDIO_API_KEY — get one at https://aistudio.google.com/apikeygemini-2.5-flash, free of charge2026-09-10 — Free models changed: added gemini-3.8-flash2026-08-17 — Free models changed: added gemini-2.5-pro, gemini-3.5-flash-lite, gemini-3.7-flash; dropped gemini-2.52026-07-19 — Added to the list: Free tier for Gemini 2.5 Flash/Pro APIGenerated from registry.yaml on 2026-09-18 and re-verified twice a week; the full list, the Atom feed and the machinery are at https://github.com/mvalentsev/awesome-free-ai-coding.