OpenCode currently defaults to a free model (currently "Big Pickle") and provides some other free alternatives. This market only considers the default one.
This is judged by the default install method for Linux published on https://opencode.ai/; or its replacement if there is an obvious one. If this website disappears or removes the install instructions and there is no clear replacement, this market will resolve YES for the date it happened.
If the default model (or OpenCode itself) requires a subscription or registration to use, this will count as not free.
Temporary issues do not count; but if the default model is unavailable or not free for at least a week, it will count YES (at the date it started being unavailable). If it becomes available for free again at a later date, this will not count.