fix(web): Add support for opus 4.8

[brendan-kellam]

Summary by CodeRabbit

• New Features
  • Expanded adaptive-thinking support to additional Claude models, enabling enhanced AI reasoning across more Claude versions.
• Bug Fixes
  • Fixed an error where a newer Claude model incorrectly reported adaptive thinking as unsupported, improving stability and preventing related failures.

[coderabbitai]

Caution

Review failed

The pull request is closed.

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 2e186921-e7a4-49f6-8013-498c64856171

📥 Commits

Reviewing files that changed from the base of the PR and between 863e52e and 8e4e454.

📒 Files selected for processing (1)

• CHANGELOG.md

---

Walkthrough

The isAdaptiveThinkingSupported condition for Anthropic models in getAISDKLanguageModelAndOptions was expanded to include claude-opus-4-8 models alongside the existing claude-opus-4-7 support, and CHANGELOG.md was updated with a “Fixed” entry noting the claude-opus-4-8 "thinking.type.enabled" error resolution.

Changes

Adaptive Thinking Model Support

Layer / File(s)	Summary
Claude Opus 4.8 Adaptive Thinking Support packages/web/src/features/chat/utils.server.ts, CHANGELOG.md	The isAdaptiveThinkingSupported condition now returns true for modelIds starting with claude-opus-4-8 in addition to claude-opus-4-7, and the changelog adds a “Fixed” note about the claude-opus-4-8 thinking.type.enabled support error.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Possibly related PRs

• sourcebot-dev/sourcebot#1127: Both PRs modify the adaptive thinking condition in getAISDKLanguageModelAndOptions for the Anthropic provider—this PR extends support to claude-opus-4-8, while the related PR added adaptive thinking for claude-opus-4-7.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title 'Add support for opus 4.8' directly reflects the main change: extending adaptive thinking support to Claude Opus 4.8 models alongside the existing 4.7 support.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch bkellam/fix-opus-4-8

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands and usage tips.}