Anthropic Python SDK v2.2.0 adds support for message threads and detailed usage/cost repor

EXHIBIT 2268

Oct 23, 2026 13:21 UTC github anthropics/anthropic-sdk-python

Anthropic Python SDK v2.2.0 adds support for message threads and detailed usage/cost reports, along with several tool-related bug fixes and documentation updates.

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anthropic's python sdk just dropped v2.2.0. looks like we're getting message thread support and more detailed usage/cost reports. could be handy for tracking spend!

new anthropic python sdk update (v2.2.0) is out. includes message threads and better usage reports. curious to see how the new reporting dimensions work for cost analysis.

anthropics/anthropic-sdk-python release: v2.2.0 name: v2.2.0 published: 2026-10-23T13:10:10Z url: https://github.com/anthropics/anthropic-sdk-python/releases/tag/v2.2.0 ### Features * **api:** add support for message threads * **api:** add usage and cost reports by dimension, mark older reports legacy ### Bug Fixes * **client:** stop suggesting math.inf in the max_retries error message * **tools:** leave the tool runner's history to the caller after `append_messages()`, and keep the current reply out of the `set_messages_params()` callback * **tools:** keep running the tool runner's function tools when `set_messages_params()` gives `tools` as definitions, and stop running one it takes out of `tools` * **tools:** give the `set_messages_params()` callback of a tool runner its `tools` as definitions again * **tools:** keep a tool runner's `betas`, `user_profile_id` and `workspace_id` when `set_messages_params()` leaves them out ### Chores * **deps:** bump certifi in the dev lockfile * **docs:** clarify plugin content scan and validation descriptions * **docs:** clarify plugin served_version_pinned and updated_at * **docs:** fix usage and cost report examples and ending_at docs * **docs:** rate limit model lists vary by organization and workspace