Amazon Q Developer (free tier)
AWS
50 agentic requests per month (covering chat, code transformation, and security scanning) — a permanent free tier, not a trial
Also includes a quota of 1,000 lines of Java code-upgrade transformation per month. You can log in and use the IDE plugin and CLI with a free AWS Builder ID (a developer identity, not a full AWS account) — no credit card or full AWS billing account required. Usage resets each calendar month; exceeding it requires upgrading to Pro ($19/user/month).
Claude series (AWS hasn't specified a version)
50 agentic requests/month is tight for heavy use — suited to light scenarios or trying it before upgrading. Logging in with a Builder ID avoids linking a full AWS billing account.