Bolt's new mode trades up to 50x usage for one opt-in. The usage meter has become the real spec in AI app builders. Once every prompt draws down a limit, people guard the one version that works and try fewer new things. Bolt Forge, from @boltdotnew, is live today as a research preview through Oct 14. It's an experimental mode in the model picker that runs open models only, GLM 5.3 Flash by default alongside Kimi K3 and DeepSeek v4 Pro. Bolt puts it at up to 50x the usage on one monthly bar,…