Skip to content

fix(ai): bump impersonated Claude Code version to 2.1.257 for Fable 5.x #1993

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
sethkarten merged 2 commits into from
Sep 2, 2026
+2 −1
Merged

fix(ai): bump impersonated Claude Code version to 2.1.257 for Fable 5.x #1993

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
dacd519
fix(ai): bump impersonated Claude Code version to 2.1.257 for Fable 5.x
snimu Sep 2, 2026
6dcc457
chore(ai): drop the identity-header test and rationale comment per re…
snimu Sep 2, 2026
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
1 change: 1 addition & 0 deletions packages/ai/.changes/res-1257-fable-claude-code-version.md
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1 @@
- Fixed Claude Fable 5.x failing over Anthropic OAuth with "Claude Code 2.1.75 does not support this model" by bumping the impersonated Claude Code version to 2.1.257 ([#1962](https://github.com/PrimeIntellect-ai/prime-agent/issues/1962))
2 changes: 1 addition & 1 deletion packages/ai/src/providers/anthropic.ts
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -77,7 +77,7 @@ function getCacheControl(
}

// Stealth mode: Mimic Claude Code's tool naming exactly
const claudeCodeVersion = "2.1.75";
const claudeCodeVersion = "2.1.257";

// Claude Code 2.x tool names (canonical casing)
// Source: https://cchistory.mariozechner.at/data/prompts-2.1.11.md
Expand Down
Loading