Greptile Summary

This PR adds claude-opus-4-8 to the DefaultModels() list in llm/transformer/anthropic/claudecode/constants.go, which is the hardcoded model catalog returned by claudecode-type channels (Claude MAX OAuth) when FetchModels is short-circuited. Without this entry, newer Claude Code clients that default to claude-opus-4-8 receive an HTTP 422 "model not found" error against any Claude MAX channel.

• Appends \"claude-opus-4-8\" as a single string entry in the DefaultModels() slice, matching the exact pattern established by prior additions (claude-opus-4-7, claude-opus-4-6, etc.).
• No logic, routing, or configuration changes; the fix is entirely contained in this one-line constant list update.

Confidence Score: 5/5

Safe to merge — a single string appended to a static list with no effect on existing entries or other code paths.

The change is one line in a pure data function that returns a hardcoded slice. It cannot break existing model routing, and the new entry is only surfaced when a client explicitly requests claude-opus-4-8. The same pattern was used successfully in prior PRs for 4-7 and earlier models.

No files require special attention.

Important Files Changed

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart TD
    A[Claude Code Client requests claude-opus-4-8] --> B{Channel Type?}
    B -->|claudecode Claude MAX OAuth| C[tryReturnDefaultModels]
    B -->|other| D[FetchModels via API]
    C --> E[getDefaultModelsByType TypeClaudecode]
    E --> F[claudecode.DefaultModels]
    F --> G[Returns hardcoded model list including claude-opus-4-8]
    G -->|model found| H[HTTP 200 routed to api.anthropic.com]
    G -->|model missing before this PR| I[HTTP 422 model not found]

_{Reviews (1): Last reviewed commit: "chore: add claude-opus-4-8 to claudecode..." | Re-trigger Greptile}