* fix(vertex_ai): forward and auto-add the compact-2026-09-04 beta on Claude routes
* test(vertex_ai): prove the compact-2026-09-04 beta reaches the wire through both Claude handlers
* fix(vertex_ai): move a client-sent body compact-2026-09-04 beta to the request header
* refactor(vertex_ai): build the Claude beta set without mutation and inject the client in the messages wire test
* fix(vertex_ai): keep client body betas in the body and answer 400 on a malformed anthropic_beta
* fix(rust): allow the compact-2026-09-04 beta on vertex_ai in the Rust beta table
The beta header config now maps compact-2026-09-04 for vertex_ai, so the Rust
table that mirrors it must stop rejecting that beta there, and the Rust Vertex
messages route adds it for a compaction request like the Python route does.
* fix(vertex_ai): keep client body betas out of the Vertex body next to litellm betas, honor drop_params, and send the compaction beta on count_tokens
Litellm's own betas replace a client's body anthropic_beta again, as on main, so a body beta
Vertex rejects no longer turns a 200 into a 400. A malformed beta drops under drop_params and
names its field otherwise. inline-tools-2026-09-15 joins compact-2026-09-04 as header-only, since
Vertex rejects both in the body. Vertex count_tokens sends compact-2026-09-04 when the request
carries compaction.
* fix(logging): log and bill Anthropic messages compaction responses on the Rust route
The Rust route hands the served Anthropic body to the logger, which validates it
against AnthropicResponse. That model had no compaction content block and no
compaction stop reason, so a compaction reply raised and wrote no spend row.
* fix(vertex_ai,azure_ai): forward compact-2026-09-04 to Azure AI Foundry, merge Vertex body betas, and redact compaction summaries
Azure AI Foundry needs the compact-2026-09-04 header for compaction, a replayed compaction block, and count tokens, so the beta map, the native compaction providers, and the Rust beta table now allow it there. Vertex keeps a client's body betas next to the ones litellm adds, as the Anthropic route does, and turn_off_message_logging now redacts compaction summaries too
* fix(vertex_ai,azure_ai): auto-add thinking display and tool change betas, redact streamed compaction summaries
Folds the header changes from #44103 into this PR. Vertex AI and Azure AI Claude
routes now add thinking-display-updates-2026-08-18 when thinking.display is
"updates" and mid-conversation-tool-changes-2026-07-01 when a tool_addition
block is present, matching the Anthropic and Bedrock routes.
With turn_off_message_logging on, compaction summaries from streamed messages
and streamed chat completions are now redacted in spend logs and callback
payloads, like the non-streamed response already was.
* fix(vertex_ai,azure_ai,rust): add tool change betas on count tokens and Rust messages, bill Rust server tool replies
Vertex and Azure count tokens now add mid-conversation-tool-changes-2026-07-01 when the history carries a tool_addition or tool_removal block, through one shared helper with the compaction beta.
The Rust /v1/messages route adds thinking-display-updates-2026-08-18 and mid-conversation-tool-changes-2026-07-01 when a request uses them, on the providers that accept each beta.
Rust-route logging parses the served body with the Anthropic response parser, so web_search, pause_turn, mcp_tool_use and container_upload replies get a spend row.
Legacy enabled thinking keeps display updates on anthropic too, and the Vertex transform reads drop_params through drops_unsupported_params.
* style(rust): rewrap beta map test line with cargo fmt
* test(rust): expect the display beta on Databricks, which main's beta list now accepts
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Co-authored-by: mateo-berri <277851410+mateo-berri@users.noreply.github.com>
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