Claude Opus 5 is limited to a 0.2M token context window by default

Opus 4.8 and earlier use a 1M token context window (on any paid plan, at least). So it’s surprising that Anthropic quietly reduced this by 80% with Opus 5. You can get the 1M token context window back, though – you just have to enable Usage Credits. You don’t have to pay for any usage… Read more

Recording audio to an iPhone via a Tascam Portacapture X8

Photo of the Tascam Portacapture X8 error dialog - "USB FS Mismatch"

It is possible to use the Tascam Portacapture X8 as an ADC, input converter, and mixing board for an iPhone, but there’s a few things you’ll need to know. Thankfully, any USB-C or USB-C-to-Lightning cable will do You just connect one end of the USB-C cable to the Portacapture X8 (to its built-in USB port)… Read more

Extracting embedded images from a PDF

Surprisingly, the best way (that I’ve found) to do this is to use The Unarchiver, a free app from MacPaw (the folks behind SetApp and many other things). It seems to faithfully extract the images as-is, including ICC profiles (which might technically be separate from the image within the PDF, but nonetheless are crucial to… Read more

Fading audio with AVPlayer

AVPlayer doesn’t provide a built-in way to fade in or out. I previously described how you achieve a video fade-in (or out) using general CoreAnimation layer animation, as part of making a macOS screen saver. Now let’s tackle the audio. I’m not certain what curve this implements, but to my ears it doesn’t sound quite… Read more