Bump default model to Opus 5 - #39
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Updates the default Claude model from Opus 4.8 to Opus 5 (claude-opus-5). - claudecode/constants.py — DEFAULT_CLAUDE_MODEL -> claude-opus-5 - action.yml — max-diff-chars context-window note references Opus 5 - README.md — claude-model input table and large-diff model-selection table The Sonnet 4.6 alternative references are unchanged. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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📋 PR Summary:
This PR bumps the default Claude model used by the code-review action from Opus 4.8 (claude-opus-4-8) to Opus 5 (claude-opus-5) and updates the accompanying documentation. The change touches a single functional line — DEFAULT_CLAUDE_MODEL in constants.py — with the rest being README and action.yml description text. Because pricing and the 1M context window are unchanged, all existing diff-size guidance and thresholds (DEFAULT_MAX_DIFF_CHARS = 800000) remain valid, so no logic or limits needed adjusting.
3 files reviewed
| File | Changes |
|---|---|
claudecode/constants.py |
Default model fallback bumped to claude-opus-5 |
action.yml |
max-diff-chars context-window note now references Opus 5 |
README.md |
Input table and model-selection table updated to Opus 5 |
No issues found. Changes look good.
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Updates the default Claude model from Opus 4.8 to Opus 5 (
claude-opus-5).Opus 5 is a drop-in upgrade at the same pricing as Opus 4.8 ($5/$25 per MTok) with the same 1M context window, so all existing diff-size guidance stays valid.
Changes
claudecode/constants.py—DEFAULT_CLAUDE_MODEL→claude-opus-5action.yml—max-diff-charscontext-window note references Opus 5README.md—claude-modelinput table and large-diff model-selection tableThe Sonnet 4.6 alternative references are unchanged.
Testing
pytest claudecode— 220 passed; 1 pre-existing failure (test_anthropic_api_key_handling, an environment-dependent integration test that also fails onmain, unrelated to this change).🤖 Generated with Claude Code