# Grok 4.5's Split Verdict: Best Agentic Tool Use on the Board, a Doubled Hallucination Rate, and the New Math of Model Trust - July 11, 2026

Page: https://stenobird.com/podcast/dx-today-no-hype-podcast-news-about-ai-dx-6434212/grok-4-5-s-split-verdict-best-agentic-tool-use-on-the-board-a-doubled-hallucination-rate-and-the-new-math-of-model-trust-july-11-2026
Text version: https://stenobird.com/podcast/dx-today-no-hype-podcast-news-about-ai-dx-6434212/grok-4-5-s-split-verdict-best-agentic-tool-use-on-the-board-a-doubled-hallucination-rate-and-the-new-math-of-model-trust-july-11-2026.md
Podcast: [DX Today | No-Hype Podcast & News About AI & DX](https://stenobird.com/podcast/dx-today-no-hype-podcast-news-about-ai-dx-6434212)
Published: 2026-07-11T10:14:04+00:00
Episode link: https://www.buzzsprout.com/2207817/episodes/19478522-grok-4-5-s-split-verdict-best-agentic-tool-use-on-the-board-a-doubled-hallucination-rate-and-the-new-math-of-model-trust-july-11-2026.mp3
Audio file: https://www.buzzsprout.com/2207817/episodes/19478522-grok-4-5-s-split-verdict-best-agentic-tool-use-on-the-board-a-doubled-hallucination-rate-and-the-new-math-of-model-trust-july-11-2026.mp3
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Duration seconds: 905

## Resource

Grok 4.5's Split Verdict: Best Agentic Tool Use on the Board, a Doubled Hallucination Rate, and the New Math of Model Trust Grok 4.5's first independent report card is in, and it is split down the middle: the best agentic tool use score on the Artificial Analysis board and a number one claim on the SWE marathon, alongside a hallucination rate that doubled from 25 percent to 54 percent. Chris and Laura unpack how a model can know more yet be wrong more often, why grounded professional work a...

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