diff --git a/packages/ai/CHANGELOG.md b/packages/ai/CHANGELOG.md
index ce1fab74c..9d03a468a 100644
--- a/packages/ai/CHANGELOG.md
+++ b/packages/ai/CHANGELOG.md
@@ -4,6 +4,8 @@
 
 ### Added
 
+- Added Anthropic Claude Sonnet 5 model metadata for Anthropic-compatible, Bedrock, OpenRouter, and Vercel AI Gateway providers.
+- Added Azure OpenAI Responses support for modern Microsoft Foundry endpoint URLs ([#6004](https://github.com/earendil-works/pi/pull/6004) by [@gukoff](https://github.com/gukoff)).
 - Added an optional `reasoning` field to `Usage` reporting reasoning/thinking token counts as a subset of `output`. Populated for Anthropic (`output_tokens_details.thinking_tokens`), OpenAI Responses/Codex/Azure (`output_tokens_details.reasoning_tokens`), OpenAI Completions (`completion_tokens_details.reasoning_tokens`), and Google Generative AI / Vertex (`thoughtsTokenCount`). Bedrock Converse and Mistral are not populated because those APIs do not return a reasoning token breakdown ([#6057](https://github.com/earendil-works/pi/issues/6057)).
 
 ### Changed
@@ -14,6 +16,7 @@
 
 - Fixed Claude Sonnet 5 metadata to use adaptive thinking payloads for Anthropic-compatible and Bedrock requests.
 - Fixed generated Xiaomi MiMo model pricing to match current pay-as-you-go pricing from models.dev ([#6138](https://github.com/earendil-works/pi/issues/6138)).
+- Fixed provider HTTP errors to include response bodies instead of opaque SDK messages ([#5832](https://github.com/earendil-works/pi/pull/5832) by [@stephanmck](https://github.com/stephanmck)).
 - Fixed `streamSimple()` to send a context-aware max-token cap so providers that count input and output against one context window do not reject long requests ([#5595](https://github.com/earendil-works/pi/issues/5595)).
 - Fixed OpenAI Responses streams to preserve reasoning replay state when output items finish out of order ([#6009](https://github.com/earendil-works/pi/issues/6009)).
 - Fixed retry classification for provider errors that explicitly tell callers to retry the request ([#6019](https://github.com/earendil-works/pi/issues/6019)).
diff --git a/packages/coding-agent/CHANGELOG.md b/packages/coding-agent/CHANGELOG.md
index 5ea14c7a4..1c43be30e 100644
--- a/packages/coding-agent/CHANGELOG.md
+++ b/packages/coding-agent/CHANGELOG.md
@@ -2,13 +2,42 @@
 
 ## [Unreleased]
 
+### New Features
+
+- **Anthropic Claude Sonnet 5 support** - Claude Sonnet 5 is available through inherited Anthropic-compatible and Bedrock provider catalogs with adaptive thinking enabled. See [Providers](docs/providers.md) and [Model Options](docs/usage.md#model-options).
+- **Configurable output spacing** - `outputPad` controls horizontal padding for user messages, assistant messages, and thinking blocks. See [Settings](docs/settings.md#ui--display).
+- **External editor configuration** - `externalEditor` lets Ctrl+G use a configured editor before `$VISUAL`/`$EDITOR` fallbacks. See [Settings](docs/settings.md#ui--display) and [Keybindings](docs/keybindings.md).
+- **Richer RPC session tree access** - RPC clients can inspect session entries and tree snapshots with `get_entries` and `get_tree`. See [get_entries](docs/rpc.md#get_entries) and [get_tree](docs/rpc.md#get_tree).
+- **Extension session metadata updates** - Extensions can observe session name changes through `session_info_changed`. See [session_info_changed](docs/extensions.md#session_info_changed).
+- **Modern Azure Foundry endpoint support** - Azure OpenAI Responses provider setup supports current Microsoft Foundry endpoint URLs. See [Azure OpenAI](docs/providers.md#azure-openai).
+
 ### Added
 
+- Added inherited Anthropic Claude Sonnet 5 model support.
+- Added `get_entries` and `get_tree` RPC commands for reading session entries and tree snapshots over RPC ([#6078](https://github.com/earendil-works/pi/pull/6078) by [@geraschenko](https://github.com/geraschenko)).
+- Added a package `./rpc-entry` export for launching Pi directly in RPC mode.
+- Added session-name change events for extensions ([#6175](https://github.com/earendil-works/pi/pull/6175) by [@xl0](https://github.com/xl0)).
+- Added inherited Azure OpenAI Responses support for modern Microsoft Foundry endpoint URLs ([#6004](https://github.com/earendil-works/pi/pull/6004) by [@gukoff](https://github.com/gukoff)).
+- Added inherited `Usage.reasoning` token counts for providers that report reasoning/thinking token usage ([#6057](https://github.com/earendil-works/pi/issues/6057)).
 - Added an `externalEditor` settings.json override for Ctrl+G external editor commands, with default fallbacks to Notepad on Windows and `nano` elsewhere ([#6122](https://github.com/earendil-works/pi/issues/6122)).
 - Added an `outputPad` setting for user message, assistant message, and thinking horizontal padding ([#6168](https://github.com/earendil-works/pi/issues/6168)).
 
+### Changed
+
+- Changed the default OpenAI model to `gpt-5.5`.
+- Changed inherited OpenAI Codex Responses SSE response-header waits to use the configured HTTP timeout instead of the previous fixed 20 second timeout, reducing false timeouts on slow connections ([#4945](https://github.com/earendil-works/pi/issues/4945)).
+
 ### Fixed
 
+- Fixed inherited Claude Sonnet 5 metadata to use adaptive thinking payloads for Anthropic-compatible and Bedrock requests.
+- Fixed inherited generated Xiaomi MiMo model pricing to match current pay-as-you-go pricing from models.dev ([#6138](https://github.com/earendil-works/pi/issues/6138)).
+- Fixed inherited provider HTTP errors to include response bodies instead of opaque SDK messages ([#5832](https://github.com/earendil-works/pi/pull/5832) by [@stephanmck](https://github.com/stephanmck)).
+- Fixed inherited `streamSimple()` max-token caps so providers that count input and output against one context window do not reject long requests ([#5595](https://github.com/earendil-works/pi/issues/5595)).
+- Fixed inherited OpenAI Responses streams to preserve reasoning replay state when output items finish out of order ([#6009](https://github.com/earendil-works/pi/issues/6009)).
+- Fixed inherited Z.AI preserved thinking requests to send `thinking.clear_thinking: false` when thinking is enabled, allowing replayed `reasoning_content` to participate in provider caching ([#6083](https://github.com/earendil-works/pi/issues/6083)).
+- Fixed pre-prompt compaction to stop after compaction instead of continuing immediately ([#6074](https://github.com/earendil-works/pi/pull/6074) by [@yzhg1983](https://github.com/yzhg1983)).
+- Fixed resource notifications to stay before messages when resuming sessions ([#6048](https://github.com/earendil-works/pi/pull/6048) by [@haoqixu](https://github.com/haoqixu)).
+- Fixed startup benchmark timing output to print after TUI shutdown, preserve extension timings, and drain terminal-query replies before stopping benchmark mode ([#6030](https://github.com/earendil-works/pi/pull/6030) by [@xl0](https://github.com/xl0), [#6063](https://github.com/earendil-works/pi/pull/6063) by [@xl0](https://github.com/xl0)).
 - Fixed extension tool changes to apply before the next provider request in the same agent run without dropping `before_agent_start` system-prompt overrides ([#6162](https://github.com/earendil-works/pi/issues/6162)).
 - Fixed a crash when undici emits an internal client error while terminating a mid-stream HTTP response ([#6133](https://github.com/earendil-works/pi/issues/6133)).
 - Fixed the compaction event regression test to cover status indicator cleanup and keep CI passing.