dsh-ui-cost

The stock DSH stats strip reports turn counts, LLM wall times, and TTFT, yet it never answers the question most users care about: how much is this conversation actually costing? dsh-ui-cost takes over that same stats line as a pure browser plugin, appending billed-token totals and a live cost figure right next to the existing performance metrics, so spend and throughput are visible at a glance without leaving the composer.

Cost is computed from the session durable tokenUsage projection: non-cached input and cache writes at the cache-miss input rate, cache reads at the hit rate, and output at the output rate, all priced against the model currently selected for the session (deepseek-v4-flash and deepseek-v4-pro today). Rates are sourced from the official pricing table and follow the announced peak/off-peak schedule automatically (peak 09:00-12:00 and 14:00-18:00 Beijing time, off-peak at half rate), and a model switch re-prices immediately with no refresh.

Because the plugin never modifies the ui-conversation core, a DSH upgrade that restores the stock core cannot break it, and if the plugin itself ever crashes the shadowing mechanism silently falls back to the native strip. It is designed for developers and teams who use DSH Desktop or the Web client regularly, monitor per-turn or cumulative API spend, and switch between multiple models on the fly.