feat: support Claude Sonnet 4.5

[yyhhyyyyyy]

support Claude Sonnet 4.5

Summary by CodeRabbit

• New Features
  • Added support for Claude Sonnet 4.5, including vision, function calling, and reasoning capabilities.
  • Set Claude Sonnet 4.5 as the default Anthropic model.
• Chores
  • Updated context window across several existing Anthropic models to 204,800 tokens for consistency.
  • Refreshed model metadata (e.g., max tokens, capabilities) to align with latest provider specifications.

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Walkthrough

Adds a new Anthropic model entry (Claude Sonnet 4.5, id: claude-sonnet-4-5-20250929) to provider model settings and sets it as the default in the Anthropic provider. Updates several Anthropic model contextLength values to 204,800 in the provider’s fallback/default list.

Changes

Cohort / File(s)	Summary
Anthropic provider model settings src/main/presenter/configPresenter/providerModelSettings.ts	Adds model config for Claude Sonnet 4.5 (claude-sonnet-4-5-20250929) with temperature, maxTokens, contextLength, match, vision, functionCall, and reasoning flags.
Anthropic provider defaults/fallbacks src/main/presenter/llmProviderPresenter/providers/anthropicProvider.ts	Sets default model to claude-sonnet-4-5-20250929; adds it to fallback list with metadata; aligns multiple Claude model contextLength to 204,800; minor consistency updates across 3.x/4.x entries.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Possibly related PRs

• feat: add Claude Opus 4.1 support and fix anthropic model list dialog #702 — Similar updates to Anthropic model configuration and defaults, including contextLength adjustments.
• feat: add Claude Opus 4.1 to anthropic default model list #726 — Modifies anthropicProvider.ts default/fallback models, adding new Claude entries and changing defaults.

Suggested reviewers

• zerob13

Poem

A hop, a skip—new Sonnet in the sky,
I twitch my ears as context lengths grow high.
Default set, I thump with cheerful might,
Claude hops in front, the path feels right.
Carrots compiled, configs align—delight! 🥕🐇

Pre-merge checks and finishing touches

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title Check	✅ Passed	The title “feat: support Claude Sonnet 4.5” succinctly and accurately highlights the primary change of the pull request, namely adding support for the new Claude Sonnet 4.5 model, and follows common conventions for feature introductions without including extraneous details.
Docstring Coverage	✅ Passed	No functions found in the changes. Docstring coverage check skipped.

✨ Finishing touches

• 📝 Generate Docstrings

🧪 Generate unit tests

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch feat/add-claude-sonnet-4.5

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📜 Recent review details

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Review profile: CHILL

Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between 8ffefdf and 0e15071.

📒 Files selected for processing (2)

• src/main/presenter/configPresenter/providerModelSettings.ts (1 hunks)
• src/main/presenter/llmProviderPresenter/providers/anthropicProvider.ts (6 hunks)

🧰 Additional context used

📓 Path-based instructions (11)

**/*.{js,jsx,ts,tsx}

📄 CodeRabbit inference engine (.cursor/rules/development-setup.mdc)

**/*.{js,jsx,ts,tsx}: 使用 OxLint 进行代码检查
Log和注释使用英文书写

**/*.{js,jsx,ts,tsx}: Use OxLint for JS/TS code; pre-commit hooks run lint-staged and typecheck
Use camelCase for variables and functions
Use PascalCase for types and classes
Use SCREAMING_SNAKE_CASE for constants

Files:

• src/main/presenter/configPresenter/providerModelSettings.ts
• src/main/presenter/llmProviderPresenter/providers/anthropicProvider.ts

src/{main,renderer}/**/*.ts

📄 CodeRabbit inference engine (.cursor/rules/electron-best-practices.mdc)

src/{main,renderer}/**/*.ts: Use context isolation for improved security
Implement proper inter-process communication (IPC) patterns
Optimize application startup time with lazy loading
Implement proper error handling and logging for debugging

Files:

• src/main/presenter/configPresenter/providerModelSettings.ts
• src/main/presenter/llmProviderPresenter/providers/anthropicProvider.ts

src/main/**/*.ts

📄 CodeRabbit inference engine (.cursor/rules/electron-best-practices.mdc)

Use Electron's built-in APIs for file system and native dialogs

Files:

• src/main/presenter/configPresenter/providerModelSettings.ts
• src/main/presenter/llmProviderPresenter/providers/anthropicProvider.ts

**/*.{ts,tsx}

📄 CodeRabbit inference engine (.cursor/rules/error-logging.mdc)

**/*.{ts,tsx}: 始终使用 try-catch 处理可能的错误
提供有意义的错误信息
记录详细的错误日志
优雅降级处理
日志应包含时间戳、日志级别、错误代码、错误描述、堆栈跟踪（如适用）、相关上下文信息
日志级别应包括 ERROR、WARN、INFO、DEBUG
不要吞掉错误
提供用户友好的错误信息
实现错误重试机制
避免记录敏感信息
使用结构化日志
设置适当的日志级别

Files:

• src/main/presenter/configPresenter/providerModelSettings.ts
• src/main/presenter/llmProviderPresenter/providers/anthropicProvider.ts

src/main/**/*.{ts,js,tsx,jsx}

📄 CodeRabbit inference engine (.cursor/rules/project-structure.mdc)

主进程代码放在 src/main

Files:

• src/main/presenter/configPresenter/providerModelSettings.ts
• src/main/presenter/llmProviderPresenter/providers/anthropicProvider.ts

**/*.{ts,tsx,js,vue}

📄 CodeRabbit inference engine (CLAUDE.md)

Use English for all logs and comments

Files:

• src/main/presenter/configPresenter/providerModelSettings.ts
• src/main/presenter/llmProviderPresenter/providers/anthropicProvider.ts

**/*.{ts,tsx,vue}

📄 CodeRabbit inference engine (CLAUDE.md)

Enable and adhere to strict TypeScript typing (avoid implicit any, prefer precise types)

Files:

• src/main/presenter/configPresenter/providerModelSettings.ts
• src/main/presenter/llmProviderPresenter/providers/anthropicProvider.ts

src/main/**

📄 CodeRabbit inference engine (AGENTS.md)

Place all Electron main-process code under src/main/

Files:

• src/main/presenter/configPresenter/providerModelSettings.ts
• src/main/presenter/llmProviderPresenter/providers/anthropicProvider.ts

src/main/presenter/**

📄 CodeRabbit inference engine (AGENTS.md)

src/main/presenter/**: Organize main-process presenters under src/main/presenter/ (Window/Tab/Thread/Mcp/Config/LLMProvider)
Follow the Presenter pattern for main-process modules

Files:

• src/main/presenter/configPresenter/providerModelSettings.ts
• src/main/presenter/llmProviderPresenter/providers/anthropicProvider.ts

**/*.{js,jsx,ts,tsx,vue}

📄 CodeRabbit inference engine (AGENTS.md)

Apply Prettier formatting: single quotes, no semicolons, max width 100

Files:

• src/main/presenter/configPresenter/providerModelSettings.ts
• src/main/presenter/llmProviderPresenter/providers/anthropicProvider.ts

src/main/presenter/llmProviderPresenter/providers/*.ts

📄 CodeRabbit inference engine (.cursor/rules/llm-agent-loop.mdc)

src/main/presenter/llmProviderPresenter/providers/*.ts: Each file in src/main/presenter/llmProviderPresenter/providers/*.ts should handle interaction with a specific LLM API, including request/response formatting, tool definition conversion, native/non-native tool call management, and standardizing output streams to a common event format.
Provider implementations must use a coreStream method that yields standardized stream events to decouple the main loop from provider-specific details.
The coreStream method in each Provider must perform a single streaming API request per conversation round and must not contain multi-round tool call loop logic.
Provider files should implement helper methods such as formatMessages, convertToProviderTools, parseFunctionCalls, and prepareFunctionCallPrompt as needed for provider-specific logic.
All provider implementations must parse provider-specific data chunks and yield standardized events for text, reasoning, tool calls, usage, errors, stop reasons, and image data.
When a provider does not support native function calling, it must prepare messages using prompt wrapping (e.g., prepareFunctionCallPrompt) before making the API call.
When a provider supports native function calling, MCP tools must be converted to the provider's format (e.g., using convertToProviderTools) and included in the API request.
Provider implementations should aggregate and yield usage events as part of the standardized stream.
Provider implementations should yield image data events in the standardized format when applicable.
Provider implementations should yield reasoning events in the standardized format when applicable.
Provider implementations should yield tool call events (tool_call_start, tool_call_chunk, tool_call_end) in the standardized format.
Provider implementations should yield stop events with appropriate stop_reason in the standardized format.
Provider implementations should yield error events in the standardized format...

Files:

• src/main/presenter/llmProviderPresenter/providers/anthropicProvider.ts

⏰ Context from checks skipped due to timeout of 90000ms. You can increase the timeout in your CodeRabbit configuration to a maximum of 15 minutes (900000ms). (1)

• GitHub Check: build-check (x64)

🔇 Additional comments (3)

src/main/presenter/configPresenter/providerModelSettings.ts (1)

218-228: LGTM! Claude Sonnet 4.5 model configuration is well-structured.

The new model entry follows the established pattern for Claude 4.x models with appropriate configuration values. The 204,800 context length aligns with other recent Claude models, and the capability flags (vision, functionCall, reasoning) are correctly set.

src/main/presenter/llmProviderPresenter/providers/anthropicProvider.ts (2)

23-23: LGTM! Default model updated to Claude Sonnet 4.5.

The new default model ID follows Anthropic's naming convention and matches the newly added model configuration. This ensures the provider will use the latest model by default.

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172-183: LGTM! Fallback model entry properly configured.

The Claude Sonnet 4.5 entry in the fallback model list is correctly structured and consistent with the configuration in providerModelSettings.ts. Positioning it at the top of the list ensures it's prioritized when API model fetching fails.

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