v2.27.0

2.27.0 (2026-10-31)

Features

• add cost_dollars to streaming answer and search responses (2fca0ea)
• add forward-compatible handling for unknown response variants and enum values (2fca0ea)
• deprecate livecrawl in favor of max_age_hours (2fca0ea)
• preserve unknown AgentRunStatus and AgentStopReason values (2fca0ea)
• response enums also accept unlisted strings and response unions include Unknown* models, so exhaustive type checks need a default case; websets.events.get returns UnknownEvent instead of raising ValueError (2fca0ea)
• support JSON search responses in stream_search (2fca0ea)

Bug Fixes

• fix AgentOutput usage counts to accept fractional values (2fca0ea)
• fix response models for unknown research plan outputs and fractional Agent usage (2fca0ea)

Documentation

• document the AgentDataSourceProvider provider reference (2fca0ea)