Claude Sonnet 4.6 is live in Aisle, plus 30 new variable operations for workflows: full math, string manipulation, array utilities, object tools, date formatting, and a Switch node that replaces cascading if/else logic. Together they make workflow automation and data transformation possible without writing code.
Sonnet 4.6 is Live
We've rolled out Claude Sonnet 4.6 across all of Aisle. It's noticeably faster, smarter, and more reliable. It nails complex instructions, reasons with greater depth, and feels more responsive across the board. Test it against previous versions with your prompts in Playgrounds.
30 New Workflow Variable Operations
Workflows often hit a point where you need to massage data before passing it downstream, and the only option was writing a code node for something that should have been a one-liner. To solve this, we've introduced 30 new built-in variable operations for workflow automation.
They are organized into five categories. Here's what's new:
Control Flow
The Switch Node is the one we're most excited about. If you've ever built a workflow with four nested if/else branches to route based on a value, you know how fast it becomes unreadable. Switch handles that pattern cleanly: one node, multiple cases, no nesting required.
Math
Add, subtract, multiply, divide. Sum or average an entire array. Useful any time you're scoring outputs, calculating costs, or doing anything with numbers before passing them to the next step.
Strings
Uppercase, lowercase, trim, replace, concatenate, and six different check operations (contains, starts with, ends with, is empty). The enhanced Concatenate Strings node supports a custom separator, so joining arrays of values into a formatted string is finally straightforward.
Arrays
Chunk, slice, length, includes, unique, flatten, and flatten-to-object. Array Chunk is particularly useful for batching. You can split a large list into groups of N before fanning out to parallel nodes. Array Unique quietly solves a lot of deduplication headaches you'd otherwise handle in code.
Objects
Merge, keys, values, has-key, pick, and omit. You will reach for Object Pick and Omit constantly. They are great for grabbing only the fields you need before passing data forward, or stripping sensitive keys before logging.
Dates
Format Date and Calculate Date. Format uses a pattern string so you get exactly the output your downstream integration expects. Calculate Date lets you add or subtract time from a date, which is useful for deadlines, scheduling windows, and expiry logic.
All 30 variable operations are available now in the workflow builder. If you've been using code nodes as a workaround for basic data transformations, it's worth revisiting those workflows. Try Claude Sonnet 4.6 and the new operations in Aisle to speed up your automation.