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I just asked it and it said that it uses the on device TTS capabilities.

I find it very unlikely that it would be trained on that information or that anthropic would put that in its context window, so it's very likely that it just made that answer up.

No, it did not make it up. I was curious so I asked it asked it to imitate a posh British accent imitating a South Brooklyn accent while having a head cold and it explained that it didn't have have fine grained control over the audio output because it was using a TTS. I asked it how it knew that and it pointed me towards [1] and highlighted the following.

> As of May 29th, 2025, we have added ElevenLabs, which supports text to speech functionality in Claude for Work mobile apps.

Tracked down the original source [2] and looked for additional updates but couldn't find anything.

[1] https://simonwillison.net/2025/May/31/using-voice-mode-on-cl...

[2] https://trust.anthropic.com/updates

If it does a web search that's fine, I assumed it hadn't since you hadn't linked to anything.

Also it being right doesn't mean it didn't just make up the answer.

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