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Released on 2026-04-19.

Upgrade Instructions

ExecutionSession.sample and ExecutionSession.estimate: These methods now accept a list of parameter dictionaries for batch execution, returning a list of results. The dedicated batch_sample, submit_batch_sample, batch_estimate, and submit_batch_estimate methods are deprecated — pass a list to the standard methods instead.
variational_minimize function: Added a new public variational_minimize function for variational optimization of a cost function over the parameter values of a quantum program. Supports Hamiltonian and classical cost functions, run_via_classiq, and improved input validation. See the SDK reference for details.
Added slice(array, start, stop) in classiq.qmod.symbolic as the Python alternative for array slice expressions on Python lists, analogous to subscript.
classiq.print_diagnostics(): New function that prints a snapshot of the SDK version, Python environment, backend host and version, authentication status, and user ID - for easy inclusion in support tickets.

Execution: Sample jobs started with execute() now persist submitted-circuit metadata so ExecutionJob.get_submitted_circuits() matches the documented behavior.
Studio - Light mode not saved for users preferences
IDE - Synthesize button keeps showing and disappearing
Fix synthesis of nested concatenations in control condition.

The theta parameter of function phase was renamed to coefficient. The old name is deprecated and will no longer be supported starting on 2026-05-04 at the earliest.
Function randomized_benchmarking is deprecated and will no longer be supported starting on 2026-05-11 at the earliest.