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# Reasoning effort per model; campaign analytics

* **Builder**: Models that support a reasoning *effort* setting now expose it, and every model defaults to the least thinking it allows — the right default for live conversation. Models that reject a temperature (current GPT-5 and Claude families) no longer show one. See [Choose models and voices](/build/choose-models-and-voices).
* **Models**: Catalogue corrected from live-call results; retired models removed; the Claude 5 family added.
* **Calls**: Campaign analytics gain outcome, attempt-distribution, failure-cause and duration-histogram views, and campaign counters no longer drift. See [Campaigns](/calls/campaigns).
* **Telephony**: WhatsApp calls from callers Meta identifies by business ID rather than phone number are now answered; a single unrecognised WhatsApp event no longer drops the events around it.
* **Calls**: Releasing a phone number no longer interrupts Meta Lead Ads calls already in flight for that number.